Awesome Sysadmin#
A curated list of amazingly awesome Free and Open-Source sysadmin resources. Please read the Contributing if you wish to add software and consider donating to the FLOSS projects you use regularly. Please consider contributing to fix one of the pinned issues if your time allows.
HTML version (recommended), Markdown version (legacy).
See Contributing.
Software#
This page lists all projects. Use links in the sidebar or click on tags to browse projects by category.
389 Directory Server#
Enterprise-class Open Source LDAP server for Linux.
ActiveMQ#
Java message broker.
★2428 2026-05-20 Java Apache-2.0
Adagios#
Web based Nagios interface for configuration and monitoring (replacement to the standard interface), and a REST interface.
aerc#
Terminal MUA with a focus on plaintext and features for developers.
Ajenti#
Control panel for Linux and BSD.
Alerta#
Distributed, scalable and flexible monitoring system.
★2511 2026-03-30 Python Apache-2.0
Ansible#
Provisioning, configuration management, and application-deployment tool.
Apache Ant#
Automation build tool, similar to make, a library and command-line tool whose mission is to drive processes described in build files as targets and extension points dependent upon each other.
★460 2026-05-16 Java Apache-2.0
Apache Directory Server#
Extensible and embeddable directory server, certified LDAPv3 compatible, with Kerberos 5 and Change Password Protocol support, triggers, stored procedures, queues and views.
★182 2026-05-19 Java Apache-2.0
Apache Maven#
Build automation tool mainly for Java. A software project management and comprehension tool. Based on the concept of a project object model (POM), Maven can manage a project’s build, reporting and documentation from a central piece of information.
★5052 2026-05-20 Java Apache-2.0
aptly#
Swiss army knife for Debian repository management.
ArgoCD#
Declarative, GitOps continuous delivery tool for Kubernetes.
★22929 2026-05-20 Go Apache-2.0
Atom Community#
A fork of atom A hackable text editor from Github.
★781 2025-08-19 JavaScript MIT
Atomia DNS#
DNS management system.
Authelia#
The Single Sign-On Multi-Factor portal for web apps.
★27841 2026-05-20 Go Apache-2.0
Authentik#
Flexible identity provider with support for different protocols. (OAuth 2.0, SAML, LDAP and Radius).
Backrest#
Backrest is a web UI and orchestrator for restic backup.
Backupninja#
Lightweight, extensible meta-backup system, provides a centralized way to configure and coordinate many different backup utilities.
Bareos#
Cross-network backup solution which preserves, archives, and recovers data from all major operating systems.
Barman#
Backup and Recovery Manager for PostgreSQL.
Bazel#
A fast, scalable, multi-language and extensible build system. Used by Google.
★25409 2026-05-20 Java Apache-2.0
BeanstalkD#
A simple, fast work queue.
Beats#
Single-purpose data shippers that send data from hundreds or thousands of machines and systems to Logstash or Elasticsearch.
★12619 2026-05-20 Go Apache-2.0
Beszel#
Lightweight server monitoring platform that includes Docker statistics, historical data, and alert functions.
Bind#
Versatile, classic, complete name server software.
BorgBackup#
Deduplicating archiver with compression and authenticated encryption.
★13345 2026-05-17 Python BSD-3-Clause
BounCA#
A personal SSL Key / Certificate Authority web-based tool for creating self-signed certificates.
★24 2026-02-06 Python Apache-2.0
Brackets#
Code editor for web designers and front-end developers.
★1509 2024-12-13 JavaScript MIT
Buildbot#
Python-based toolkit for continuous integration.
Burp#
Network backup and restore program.
Cacti#
Web-based network monitoring and graphing tool.
cadvisor#
Analyzes resource usage and performance characteristics of running containers.
★19140 2026-05-14 Go Apache-2.0
Capistrano#
Deploy your application to any number of machines simultaneously, in sequence or as a rolling set via SSH (rake based).
CapRover#
Build your own PaaS in a few minutes.
★15034 2026-05-18 Docker Nodejs Apache-2.0
CDS#
Enterprise-Grade Continuous Delivery & DevOps Automation Open Source Platform.
★4818 2026-05-20 Go BSD-3-Clause
Ceph#
Distributed object, block, and file storage platform.
CFEngine#
Configuration management system for automated configuration and maintenance of large-scale computer systems.
CheckCle#
Seamless, real-time monitoring of full-stack systems, applications, and infrastructure.
checkmk#
Comprehensive solution for monitoring of applications, servers, and networks.
Chocolatey#
The package manager for Windows.
★11385 2026-05-14 C# PowerShell Apache-2.0
Chrony#
A versatile implementation of the Network Time Protocol (NTP).
CINC#
Free distribution of Chef, a configuration management tool using a pure-Ruby, domain-specific language (DSL) for writing system configuration “recipes”.
★? ? Ruby Apache-2.0
Claws Mail#
Old school email client (and news reader), based on GTK+.
Clonezilla#
Partition and disk imaging/cloning program.
cloud-init#
Initialization tool to automate the configuration of VMs, cloud instances, or machines on a network.
★3693 2026-05-06 Python GPL-3.0 Apache-2.0
CloudSlang#
Flow-based orchestration tool for managing deployed applications, with Docker capabilities.
★93 2026-05-14 Java Apache-2.0
CloudStack#
Cloud computing software for creating, managing, and deploying infrastructure cloud services.
★2917 2026-05-20 Java Python Apache-2.0
Cobbler#
Cobbler is a Linux installation server that allows for rapid setup of network installation environments.
Cockpit#
Web-based graphical interface for servers.
Collectd#
System statistics collection daemon.
Collins#
At Tumblr, it’s the infrastructure source of truth and knowledge.
★575 2021-03-01 Docker Scala Apache-2.0
Concourse#
Concourse is a CI tool that treats pipelines as first class objects and containerizes every step along the way.
★7831 2026-05-20 Go Apache-2.0
Consul#
Consul is a tool for service discovery, monitoring and configuration.
Coolify#
An open-source & self-hostable Heroku / Netlify alternative (and even more).
★55655 2026-05-18 Docker Apache-2.0
CoreDNS#
Flexible DNS server.
★14085 2026-05-20 Go Apache-2.0
cState#
Static status page for hyperfast Hugo. Clean design, minimal JS, super light HTML/CSS, high customization, optional admin panel, read-only API, IE8+.
DadaMail#
Mailing List Manager, written in Perl.
Dar#
Which stands for Disk ARchive, is a robust and rich featured archiving and backup software of the tar style.
Darcs#
Cross-platform version control system, like git, mercurial or svn but with a very different approach: focus on changes rather than snapshots.
dashdot#
A simple, modern server dashboard for smaller private servers.
Databasus#
PostgreSQL, MySQL, MariaDB and MongoDB backup tool with web UI, external storages (local, S3, FTP, Google Drive, etc.), notifications (webhook, Discord, Slack, etc.) and team management.
★6906 2026-05-20 Docker Apache-2.0
DD-WRT#
A Linux-based firmware for wireless routers and access points, originally designed for the Linksys WRT54G series.
DefGuard#
True enterprise WireGuard with MFA/2FA and SSO.
★? ? Rust Apache-2.0
Designate#
DNSaaS services for OpenStack.
★? ? Python Apache-2.0
Diagrams.net#
A.K.A. Draw.io. Easy to use Diagram UI with a plethora of templates.
★5485 2026-05-19 JavaScript Docker Apache-2.0
Diamond#
Daemon that collects system metrics and publishes them to Graphite (and others).
djbdns#
A collection of DNS applications, including tinydns.
DNSControl#
Synchronize your DNS to multiple providers from a simple DSL.
dnsmasq#
Provides network infrastructure for small networks: DNS, DHCP, router advertisement and network boot.
Docker Compose#
Define and run multi-container Docker applications.
★37401 2026-05-20 Go Apache-2.0
Docker Swarm#
Manage cluster of Docker Engines.
★3609 2026-04-21 Go Apache-2.0
Docker#
Platform for developers and sysadmins to build, ship, and run distributed applications.
★? ? Go Apache-2.0
Dockovpn#
Out-of-the-box stateless dockerized OpenVPN server which starts in less than 2 seconds.
Dokku#
An open-source PaaS (alternative to Heroku).
DomainMOD#
Manage your domains and other internet assets in a central location.
DRBD#
Distributed replicated storage system, implemented as a Linux kernel driver.
Duplicati#
Backup client that securely stores encrypted, incremental, compressed backups on cloud storage services and remote file servers.
Duplicity#
Encrypted bandwidth-efficient backup using the rsync algorithm.
easy-rsa#
Bash script to build and manage a PKI CA.
EasyBuild#
EasyBuild builds software and modulefiles for High Performance Computing (HPC) systems in an efficient way.
Eclipse#
IDE written in Java with an extensible plug-in system.
EdMon#
A command-line monitoring application helping you to check that your hosts and services are available, with notifications support.
Eggdrop#
The oldest Internet Relay Chat (IRC) bot still in active development.
Environment Modules#
Environment Modules provides for the dynamic modification of a user’s environment via modulefiles.
Errbot#
Plugin based chatbot designed to be easily deployable, extensible and maintainable.
etcd#
Distributed K/V-Store, authenticating via SSL PKI and a REST HTTP Api for shared configuration and service discovery.
★51718 2026-05-20 Go Apache-2.0
eZ Server Monitor#
A lightweight and simple dashboard monitor for Linux, available in Web and Bash application.
Fabric#
Python library and cli tool for streamlining the use of SSH for application deployment or systems administration tasks.
★15435 2026-04-10 Python BSD-2-Clause
FaynoSync#
Self-hosted Dynamic Update Server with statistics, supporting multiple updaters. Flexible features for seamless app updates and insights.
★150 2026-05-20 Docker Go Apache-2.0
Firezone#
WireGuard based VPN Server and Firewall.
★8614 2026-05-20 Docker Apache-2.0
Fluentd#
Data collector for unified logging layer.
★13533 2026-05-12 Ruby Apache-2.0
Flume#
Distributed, reliable, and available service for efficiently collecting, aggregating, and moving large amounts of log data.
★2559 2026-05-20 Java Apache-2.0
Fog#
Cloning/imaging solution/rescue suite.
Fossil#
Distributed version control with built-in wiki and bug tracking.
★? ? C BSD-2-Clause
fpm#
Versatile multi format package creator.
FreeIPA#
Integrated security information management solution combining Linux (Fedora), 389 Directory Server, Kerberos, NTP, DNS, and Dogtag Certificate System (web interface and command-line administration tools).
★? ? Python C JavaScript GPL-3.0
FreeRADIUS#
Multi-protocol policy server (radiusd) that implements RADIUS, DHCP, BFD, and ARP and associated client/PAM library/Apache module.
Froxlor#
Lightweight server management software with Nginx and PHP-FPM support.
Fusion Directory#
Improve the Management of the services and the company directory based on OpenLDAP.
fx#
A tool to help you do Function as a Service with painless on your own servers.
Ganeti#
Cluster virtual server management software tool built on top of KVM and Xen.
★573 2026-05-12 Python Haskell BSD-2-Clause
Gatus#
Automated service health dashboard.
★10992 2026-05-19 Docker K8S Apache-2.0
Geany#
GTK2 text editor.
Gearman#
Fast multi-language queuing/job processing platform.
★759 2026-05-18 C++ BSD-3-Clause
Genesis#
A template framework for multi-environment BOSH deployments.
Git#
Distributed revision control and source code management (SCM) with an emphasis on speed.
GitLab CI#
Gitlab’s built-in, full-featured CI/CD solution.
glances#
Open-source, cross-platform real-time monitoring tool with CLI and web dashboard interfaces and many exporting options.
GLPI#
Information Resource-Manager with an additional Administration Interface.
Gluetun VPN client#
VPN client in a thin Docker container for multiple VPN providers, written in Go, and using OpenVPN or Wireguard, DNS over TLS, with a few proxy servers built-in.
GlusterFS#
Software-defined distributed storage that can scale to several petabytes, with interfaces for object, block and file storage.
GNS3#
Graphical network simulator that provides a variety of virtual appliances.
GNU Emacs#
An extensible, customizable text editor-and more.
GNU Make#
The most popular automation build tool for many purposes, make is a tool which controls the generation of executables and other non-source files of a program from the program’s source files.
GoAccess#
Real-time web log analyzer and interactive viewer that runs in a terminal or through the browser.
GoCD#
Continuous delivery server.
★7392 2026-05-20 Java Ruby Apache-2.0
Gradle#
Another build automation system.
★18574 2026-05-20 Groovy Java Apache-2.0
Grafana#
A Graphite & InfluxDB Dashboard and Graph Editor.
Graphite#
Scalable graphing server.
★6088 2026-03-31 Python Apache-2.0
grml#
Bootable Debian Live CD with powerful CLI tools.
Hadoop Distributed Filesystem (HDFS)#
Distributed file system that provides high-throughput access to application data.
★15548 2026-05-20 Java Apache-2.0
Harness#
End-to-end developer platform with Source Control Management, CI/CD Pipelines, Hosted Developer Environments, and Artifact Registries (fork of Drone).
★35964 2026-05-20 Go Apache-2.0
Haroopad#
Markdown editor with live preview.
★1676 2018-12-04 JavaScript GPL-3.0
Headscale#
Self-hostable fork of Tailscale, cross-platform clients, simple to use, built-in (currently experimental) monitoring tools.
★38535 2026-05-20 Go BSD-3-Clause
Healthchecks#
Monitoring for cron jobs, background services and scheduled tasks.
★10052 2026-05-19 Python BSD-3-Clause
HestiaCP#
Web server control panel (fork of VestaCP).
Hubot#
A customizable, life embetterment robot.
i-doit#
IT Documentation and CMDB.
Icinga#
Nagios fork that has since lapped nagios several times. Comes with the possibility of clustered monitoring.
ImapSync#
Simple IMAP migration tool for copying mailboxes to other servers.
Incus#
Container “hypervisor” and a better UX for LXC.
★5389 2026-05-20 Go Apache-2.0
IPFire#
Free network firewall distribution, based on the Linux operating system with easy-to-use web management console.
ISPConfig#
Manage Linux servers directly through your browser.
★? ? PHP BSD-3-Clause
iTop#
Complete ITIL web based service management tool.
Jenkins#
Continuous Integration Server.
JuiceFS#
Distributed POSIX file system built on top of Redis and S3.
★13597 2026-05-20 Go Apache-2.0
KDevelop#
IDE by the people behind KDE.
Kener#
Status page with incident management, easy to use and customize.
KeyCloak#
Open Source Identity and Access Management.
★34484 2026-05-20 Java Apache-2.0
Knot#
High performance authoritative-only DNS server.
Kroki#
API for generating diagrams from textual descriptions.
Kubero#
A self-hosted Heroku PaaS alternative for Kubernetes that implements GitOps.
Kubo#
Implementation of IPFS, a global, versioned, peer-to-peer filesystem that seeks to connect all computing devices with the same system of files.
★17024 2026-05-19 Go Apache-2.0 MIT
KuvaszUptime#
Performant, stable uptime & SSL monitoring service with brandable status pages, IAC support, Prometheus integration and a complete REST API.
★517 2026-05-20 Docker Apache-2.0
KVM#
Linux kernel virtualization infrastructure.
Laminar#
Fast, lightweight, simple and flexible Continuous Integration.
LDAP Account Manager (LAM)#
Web frontend for managing entries (e.g. users, groups, DHCP settings) stored in an LDAP directory.
LeoFS#
Highly available, distributed, replicated eventually consistent object/blob store.
★1590 2020-06-02 Erlang Apache-2.0
Libravatar#
Libravatar is a service which delivers your avatar (profile picture) to other websites.
LibreNMS#
Fully featured network monitoring system that provides a wealth of features and device support.
Linux Dash#
A low-overhead monitoring web dashboard for a GNU/Linux machine.
lldap#
Light (simplified) LDAP implementation with a simple, intuitive web interface and GraphQL support.
Lmod#
Lmod is a Lua based module system that easily handles the MODULEPATH Hierarchical problem.
Loki#
Log aggregation system designed to store and query logs from all your applications and infrastructure.
LTB Self-Service Password#
Web interface to change and reset LDAP passwords.
Lustre#
Parallel distributed file system, generally used for large-scale cluster computing.
LXC#
Userspace interface for the Linux kernel containment features.
Mercurial#
Distributed source control management tool.
Mermaid#
Javascript module with a unique, easy, shorthand syntax. Integrates into several other tools like Grafana.
MeshCentral#
A complete web-based remote monitoring and management web site.
★6569 2026-05-17 JavaScript HTML Apache-2.0
Micro#
A modern and intuitive terminal-based text editor.
Minarca#
Client–server backup platform with a centralized web console to manage and restore Linux, Windows, and macOS backups via GUI or CLI.
mitmproxy#
A Python tool used for intercepting, viewing and modifying network traffic. Invaluable in troubleshooting certain problems.
Monit#
Small utility for managing and monitoring Unix systems.
MooseFS#
Fault tolerant, network distributed file system.
mtr#
Network utility that combines traceroute and ping.
Munin#
Networked resource monitoring tool.
munki#
Webserver-based repository of packages and package metadata, that allows macOS administrators to manage software installs.
★3417 2026-05-11 Python Apache-2.0
Mutt#
Small but very powerful text-based mail client.
Naemon#
Network monitoring tool based on the Nagios 4 core with performance enhancements and new features.
Nagios#
Computer system, network and infrastructure monitoring software application.
Nano#
Easy to use, customizable text editor.
Nebula#
A scalable p2p VPN with a focus on performance, simplicity and security.
netbox#
IP address management (IPAM) and data center infrastructure management (DCIM) tool.
★20557 2026-05-20 Python Apache-2.0
NetXMS#
Open Source network and infrastructure monitoring and management.
Nezha#
Lightweight, servers & websites monitoring and O&M tool.
★10013 2026-05-19 Go Shell Apache-2.0
Nhost#
Firebase Alternative with GraphQL. Get a database and backend configured and ready in minutes.
Notepad++#
GPLv2 multi-language editor with syntax highlighting for Windows.
NSD#
Authoritative DNS name server developed speed, reliability, stability and security.
★547 2026-05-12 C BSD-3-Clause
NSQ#
A realtime distributed messaging platform.
nsupdate.info#
Dynamic DNS service.
★1127 2026-05-13 Python BSD-3-Clause
NTPsec#
A secure, hardened, and improved implementation of Network Time Protocol derived from NTP Classic.
★157 2026-05-19 C BSD-2-Clause
Observium Community Edition#
Network monitoring and management platform that provides real-time insight into network health and performance.
OCS Inventory NG#
Asset management and deployment solution for all devices in your IT Department.
ocserv#
Cisco AnyConnect-compatible VPN server.
octoDNS#
DNS as code - Tools for managing DNS across multiple providers.
omnibus-ruby#
Easily create full-stack installers for your project across a variety of platforms.
★1312 2025-12-09 Ruby Apache-2.0
OneUptime#
A comprehensive solution for monitoring and managing your online services.
★7029 2026-05-20 Docker Apache-2.0
OpenAFS#
Distributed network file system with read-only replicas and multi-OS support.
OpenBolt#
Orchestration tool to run orchestration workflows or one-off tasks/scripts to automate the provisioning and management of nodes. Community fork of the last open source version of Puppet Bolt.
★22 2026-05-20 Ruby Apache-2.0
openDCIM#
GPL v3 Data Center Inventory Management (DCIM).
★350 2026-04-28 PHP JavaScript GPL-3.0
OpenFaaS#
Serverless Functions Made Simple for Docker & Kubernetes.
openITCOCKPIT Community Edition#
Monitoring Suite featuring seamless integrations with Naemon, Checkmk, Grafana and more.
OpenLDAP#
Open-source implementation of the Lightweight Directory Access Protocol (server, libraries and clients).
OpenNebula#
Build and manage enterprise clouds for virtualized services, containerized applications and serverless computing.
★1698 2026-05-19 C++ Apache-2.0
OpenNTPD#
A FREE, easy to use implementation of the Network Time Protocol.
Openstack Swift#
A highly available, distributed, eventually consistent object/blob store.
★? ? Python Apache-2.0
OpenVox#
Community fork of the last open source version of Puppet, a software configuration management tool which includes its own declarative language to describe system configuration.
★168 2026-05-20 Ruby C Apache-2.0
OpenVPN#
Uses a custom security protocol that utilizes SSL/TLS for key exchange.
OpenVZ#
Container-based virtualization for Linux.
OpenWISP#
Open Source Network Management System for OpenWRT based routers and access points.
OpenWrt#
A Linux-based router featuring Mesh networking, IPS via snort and AQM among many other features.
OPNsense#
An open source FreeBSD-based firewall and router with traffic shaping, load balancing, and virtual private network capabilities.
★? ? C PHP BSD-2-Clause
OPSI#
Hardware and software inventory, client management, deployment, and patching for Linux and Windows.
Overcast#
Deploy VMs across different cloud providers, and run commands and scripts across any or all of them in parallel via SSH.
oVirt#
Manages virtual machines, storage and virtual networks.
★? ? Java Apache-2.0
Oxidized#
Network device configuration backup tool.
★3380 2026-05-20 Ruby Apache-2.0
Packer#
A tool for creating identical machine images for multiple platforms from a single source configuration.
Performance Co-Pilot#
Lightweight, distributed system performance and analysis framework.
Perkeep#
A set of open source formats, protocols, and software for modeling, storing, searching, sharing and synchronizing data (previously Camlistore).
★7124 2026-02-01 C Apache-2.0
pfSense CE#
Free network firewall distribution, based on the FreeBSD operating system with a custom kernel and including third party free software packages for additional functionality.
★5641 2026-03-31 Shell PHP Other Apache-2.0
PHP Censor#
Open source self-hosted continuous integration server for PHP projects.
★686 2026-05-11 PHP BSD-2-Clause
PHP Server Monitor#
Open source tool to monitor your servers and websites.
phpIPAM#
Open source IP address management with PowerDNS integration.
phpList#
Newsletter and email marketing software.
PhpSysInfo#
A customizable PHP script that displays information about your system nicely.
Podman#
Daemonless container engine for developing, managing, and running OCI Containers on your Linux System. Containers can either be run as root or in rootless mode. Simply put: alias docker=podman.
★31739 2026-05-19 Go Apache-2.0
Pomerium#
An identity and context aware access-proxy inspired by BeyondCorp.
★4809 2026-05-20 Docker Go Apache-2.0
Portabase#
Server dashboard tool that simplifies the backup and restoration of your database instances.
★858 2026-05-17 Docker Apache-2.0
Portainer Community Edition#
Simple management UI for Docker.
Poweradmin#
Web-based DNS control panel for PowerDNS server.
Prometheus#
Service monitoring system and time series database.
★64103 2026-05-20 Go Apache-2.0
Proxmox Backup Server#
Proxmox Backup Server is an enterprise-class, client-server backup solution thatis capable of backing up virtual machines, containers, and physical hosts.
Proxmox VE#
Virtualization management solution.
QEMU#
QEMU is a generic machine emulator and virtualizer.
RackTables#
Datacenter and server room asset management like document hardware assets, network addresses, space in racks, networks configuration.
Rake#
Build automation tool similar to Make, written in and extensible in Ruby.
Ralph#
Asset management, DCIM and CMDB system for large Data Centers as well as smaller LAN networks.
★2494 2026-05-06 Python Docker Apache-2.0
RANCID#
Monitor network devices configuration and maintain history of changes.
★136 2025-12-04 Perl Shell BSD-3-Clause
rclone#
Command-line program to sync files and directories to and from different cloud storage providers..
rConfig#
Network device configuration management tool.
Rdiff-backup#
Reverse differential backup tool, over a network or locally.
reaction#
A lightweight daemon that scans program outputs for repeated patterns, and takes action.
Remmina#
Feature-rich remote desktop application for linux and other unixes.
Restic#
Easy, fast, verifiable, secure and efficient remote backup tool.
★33595 2026-05-20 Go BSD-2-Clause
Riemann#
Flexible and fast events processor allowing complex events/metrics analysis.
Roughenough#
A Roughtime secure time synchronization client and server.
★145 2026-05-18 Rust MIT Apache-2.0
RRDtool#
Industry standard, high performance data logging and graphing system for time series data.
Rsnapshot#
Filesystem snapshot utility based on rsync.
rsyslog#
Rocket-fast system for log processing.
rtop#
Interactive, remote system monitoring tool based on SSH.
Rudder#
Scalable and dynamic configuration management system for patching, security & compliance, based on CFEngine.
ruptime#
Classic system status server.
Salt#
Event-driven IT automation, remote task execution, and configuration management software.
★15435 2026-05-20 Python Apache-2.0
Samba#
Active Directory and CIFS protocol implementation.
Scrutiny#
Web UI for hard drive S.M.A.R.T monitoring, historical trends & real-world failure thresholds.
Sensu#
Monitoring tool for ephemeral infrastructure and distributed applications.
Sentora#
Open-Source Web hosting control panel for Linux, BSD (fork of ZPanel).
Shield#
A pluggable architecture for backup and restore of database systems.
Smallstep Certificates#
A private certificate authority (X.509 & SSH) and related tools for secure automated certificate management.
★8516 2026-05-20 Go Apache-2.0
Snipe IT#
Asset & license management software.
SoftEther#
Multi-protocol software VPN with advanced features.
★13242 2026-05-09 C Apache-2.0
Spack#
A flexible package manager that supports multiple versions, configurations, platforms, and compilers.
★5048 2026-05-20 Python MIT Apache-2.0
SPF Toolbox#
Application to look up DNS records such as SPF, MX, Whois, and more.
sshuttle#
Poor man’s VPN.
Statime#
A Precision Time Protocol (PTP) implementation in Rust.
★297 2026-05-08 Rust MIT Apache-2.0
Statsd#
Daemon that listens for statistics like counters and timers, sent over UDP or TCP, and sends aggregates to one or more pluggable backend services.
Status#
Simple and lightweight system monitoring tool for small homeservers with a pleasant web interface.
Strider#
Open Source Continuous Deployment / Continuous Integration platform.
strongSwan#
Complete IPsec implementation for Linux.
Subversion#
Client-server revision control system.
★? ? C Apache-2.0
Sylpheed#
Still developed predecessor to Claws Mail, lightweight mail client.
Sysdig#
Capture system state and activity from a running Linux instance, then save, filter and analyze.
★8247 2026-04-13 Docker Lua C Apache-2.0
systemd-nspawn#
Lightweight, chroot-like, environment to run an OS or command directly under systemd.
TahoeLAFS#
Secure, decentralized, fault-tolerant, peer-to-peer distributed data store and distributed file system.
Tau#
Easily build Cloud Computing Platforms with features like Serverless WebAssembly Functions, Frontend Hosting, CI/CD, Object Storage, K/V Database, and Pub-Sub Messaging.
★5028 2026-05-07 Go Rust Docker BSD-3-Clause
tcollector#
Gathers data from local collectors and pushes the data to OpenTSDB.
Telegraf#
Plugin-driven server agent for collecting, processing, aggregating, and writing metrics.
Terrateam#
GitOps-first automation platform for Terraform and OpenTofu workflows with support for self-hosted runners.
TextMate#
A graphical text editor for OS X.
Thruk#
Multibackend monitoring web interface with support for Naemon, Nagios, Icinga and Shinken.
Thunderbird#
Free email application that’s easy to set up and customize.
Tiger VNC#
High-performance, multi-platform VNC client and server.
tirreno#
Application-level security to protect your app from threats, fraud, and abuse.
tito#
Builds RPMs for git-based projects.
Trusted-CGI#
Lightweight self-hosted lambda/applications/cgi/serverless-functions platform.
Unbound#
Validating, recursive, and caching DNS resolver.
★4549 2026-05-20 C BSD-3-Clause
Uptime Kuma#
Modern, self-hosted monitoring tool with a clean UI and rich notification support.
UrBackup#
Client/Server Open Source Network Backup for Windows, MacOS and Linux.
Vagrant#
Tool for building complete development environments.
VictoriaMetrics#
Fast, cost-effective time series database and monitoring solution; drop-in replacement for Prometheus with PromQL/MetricsQL support.
★17033 2026-05-20 Go Apache-2.0
Vim#
A highly configurable text editor built to enable efficient editing.
VirtualBox#
Virtualization product from Oracle Corporation.
Virtualmin#
Powerful and flexible web hosting control panel for Linux and BSD systems.
VSCodium#
An open source cross-platform extensible code editor based on VS Code by Microsoft removing their non-free additions.
★31516 2026-05-18 TypeScript MIT
Wazuh#
Unified XDR and SIEM protection for endpoints and cloud workloads.
Webmin#
Web-based interface for system administration for Unix.
★5740 2026-05-20 Perl BSD-3-Clause
werf#
Open Source CI/CD tool for building Docker images and deploying to Kubernetes via GitOps.
★4686 2026-05-20 Go Apache-2.0
WireGuard#
Very fast VPN based on elliptic curve and public key crypto.
Wireshark#
The world’s foremost network protocol analyzer.
Woodpecker#
Community fork of Drone that uses Docker containers.
★7088 2026-05-20 Go Apache-2.0
X2go#
X2Go is an open source remote desktop software for Linux that uses the NoMachine/NX technology protocol.
XCP-ng#
Virtualization platform based on Xen Source and Citrix® Hypervisor (formerly XenServer).
Xen#
Virtual machine monitor for 32/64 bit Intel / AMD (IA 64) and PowerPC 970 architectures.
XtreemFS#
Distributed, replicated and fault-tolerant file system for federated IT infrastructures..
★347 2024-10-07 Java BSD-3-Clause
Yadifa#
Clean, small, light and RFC-compliant name server implementation developed from scratch by .eu.
★80 2026-03-24 C BSD-3-Clause
Zabbix#
Enterprise-class software for monitoring of networks and applications.
ZeroMQ#
Lightweight queuing system.
ZITADEL#
Cloud-native Identity & Access Management solution providing a platform for secure authentication, authorization and identity management.
★13818 2026-05-18 Go Docker K8S Apache-2.0
ZooKeeper#
ZooKeeper is a centralized service for maintaining configuration information, naming, providing distributed synchronization, and providing group services.
★12763 2026-05-19 Java C++ Apache-2.0
List of Licenses#
AGPL-3.0- GNU Affero General Public License 3.0Apache-2.0- Apache, Version 2.0BSD-2-Clause- BSD 2-clause “Simplified”BSD-3-Clause- BSD 3-Clause “New” or “Revised”BUSL-1.1- Business Source License 1.1CC0-1.0- Public Domain/Creative Common Zero 1.0EPL-1.0- Eclipse Public License 1.0GFDL-1.2- GNU Free Documentation License 1.2GPL-1.0- GNU General Public License 1.0GPL-2.0- GNU General Public License 2.0GPL-3.0- GNU General Public License 3.0IPL-1.0- IBM Public License v1.0ISC- ISC LicenseLGPL-2.0- GNU Lesser General Public License v2LGPL-2.1- GNU Lesser General Public License v2.1LGPL-3.0- GNU Lesser General Public License v3MIT- MIT LicenseMPL-2.0- Mozilla Public LicenseNLPL- No Limit Public LicenseOLDAP-2.8- Open LDAP Public License v2.8QPL-1.0- Q Public License 1.0Vim- Vim LicenseZlib- zlib License
Anti-features#
⚠- Depends on a proprietary service outside the user’s control
External links#
Communities / Forums#
ArsTechnica OpenForum - IT Forum which is attached to a large news site.
Reddit - Really, really large bulletin board system.
/r/Linux - News and information about Linux.
Spiceworks Community - General enterprise IT news and small articles.
StackExchange Network - Q&A communities.
Server Fault - StackExchange community for system and network administrators.
Repositories#
Software package repositories.
AlternativeTo - Find alternatives to software you know and discover new software.
deb.sury.org - Repository with LAMP updated packages for Debian and Ubuntu.
ElRepo - Community Repo for Enterprise Linux (RHEL, CentOS, etc).
EPEL - Repository for RHEL and compatibles (CentOS, Scientific Linux).
IUS - Community project that provides RPM packages for newer versions of select software for Enterprise Linux distributions.
Remi - Repository with LAMP updated packages for RHEL/Centos/Fedora.
Software Collections - Community Release of Red Hat Software Collections. Provides updated packages of Ruby, Python, etc. for CentOS/Scientific Linux 6.x.
Websites#
Cloud Native Software Landscape - Compilation of software and tools for cloud computing.
ArchWiki - Arch Linux Wiki which has really nice written articles valid for other distros.
Gentoo Wiki - Gentoo Linux Wiki with a lot in-detail description of Linux components.
Awesome SysAdmin @ LibHunt - Your go-to SysAdmin Toolbox. Based on the list here.
Ops School - Comprehensive program that will help you learn to be an operations engineer.
Digital Ocean Tutorials - 6,000+ tutorials for getting the basics of certain applications/tools/systems administration topics.
Contributing#
Contributing guidelines can be found here.
License#
This list is under the Creative Commons Attribution-ShareAlike 4.0 International. Terms of the license are summarized here. The list of authors can be found in the AUTHORS file.