Most popular self-hosted software

Advanced open source content management platform.

Popular e-commerce module for Drupal CMS, with support for dozens of payment, shipping, and shopping related modules.

Online learning platform that powers the edX.org website.

A small and easy to configure SMTP and POP3 server for Windows and Linux.

Message transfer agent (MTA) developed at the University of Cambridge.

Automate common tasks in the household like switching lamps and heating. It can also be used to log events like temperature or power consumption. You can control it via web or smartphone frontends, telnet or TCP/IP directly.

Create QR Codes, embeddable link previews for your website and crawls/scrapes metadata.

A REST API building platform that utilizes a drag & drop form builder, and is application framework agnostic. Contains open source and enterprise version.

Distributed version control system featuring wiki and bug tracker.

Online service for planning an appointment or make a decision quickly and easily: Make a poll, Define dates or subjects to choose, Send the poll link to your friends or colleagues, Discuss and make a decision.

Web-based open source GUI that controls and manages Asterisk.

Modern, web-based, convivial, multi-user and free music server.

File synchronization between computers, servers, external drives.

Software framework for decentralized, peer-to-peer networking.

Very fast and reliable reverse-proxy offering high availability, load balancing, and proxying for TCP and HTTP-based applications.

Streaming audio/video server which can be used to create an Internet radio station or a privately running jukebox and many things in between.

Universal communication platform which preserves the user's privacy and freedoms.

Source code management system that supports two leading version control systems, Mercurial and Git, with a web interface.

Streaming containerized apps and desktops to end-users. Examples include Ubuntu in your browser, or simply single apps such as Chrome, OpenOffice, Gimp, Filezilla etc.

Web frontend from Salut à Toi.

Manage electronic mail discussion and e-newsletter lists.

Media publishing platform that anyone can run (alternative to Flickr, YouTube, SoundCloud).

Wiki software package that powers Wikipedia and all other Wikimedia projects, serving hundreds of millions of users each month.

Learning and courses platform with one of the largest open source communities worldwide.

Neos or TYPO3 Neos (for version 1) is a modern, open source CMS.

Web news reader.

Easily 1-click spin up popular self-hosted apps from a convenient web interface.

Secure File Transfer Program.

Lightweight, powerful, and flexible git-centric forge with features laying the foundation for federated and decentralized development.

Simple password manage with sharing features by group and user, but no administration interface.

Community-driven platform for collaborating, managing, organizing and reviewing software development projects.

CMS system that is used to create, edit, and manage digital content, like websites, intranets, and custom solutions.

Wiki-based system for collaborative creation and maintenance of websites.

Fast, easy to administer, and secure Sendmail replacement.

Non-caching web proxy with advanced filtering capabilities for enhancing privacy, modifying web page data and HTTP headers, controlling access, and removing ads and other obnoxious Internet junk.

Complete, mature, multi-user project management system with extensive functionality for all phases of a project.

Feature-rich and easy to configure XMPP server.

Password manager for companies.

Online assessment software. From a quick quiz on your phone to large scale, high stakes, proctored desktop testing, easy, secure and economical.

Flexible project management web application.

Simple, fast, and free way to organise your digital assets.

Unify and simplify repository management for Git, Subversion, and Mercurial.

Simple-to-use and -install issue tracking system with command-line, web, REST, XML-RPC, and e-mail interfaces. Designed with flexibility in mind - not just another bug tracker.

Configurable open source project management, web-based application.

UPnP AV MediaServer that allows you to easily share audio, video, and pictures. Media player software may use Rygel to become a MediaRenderer that may be controlled remotely by a UPnP or DLNA Controller.

Multipurpose, multi frontend, libre and decentralized communication tool.

Samba is the standard Windows interoperability suite of programs for Linux and Unix. It provides secure, stable and fast file and print services for all clients using the SMB/CIFS protocol.

Allow remote clients to access image acquisition devices (scanners) available on the local host.