Password manager with a webapp, browser extension, and mobile app.
Self-hostedOpen sourcePassword Managers
20,498AGPL-3.0C#updated Oct 2026
Bookmark and archive manager to store your useful links.
Self-hostedOpen sourceBookmarks and Link Sharing
20,244MITNodejsupdated Oct 2026
Production-ready fullstack but simple mail server (SMTP, IMAP, LDAP, Antispam, Antivirus, etc.) running inside a container. Only configuration files, no SQL database.
Self-hostedOpen sourceCommunication - Email - Complete Solutions
19,698MITDockerupdated Oct 2026
The most private and secure chat and applications platform - now with double ratchet E2E encryption.
Self-hostedOpen sourceCommunication - Custom Communication Systems
19,605AGPL-3.0Haskellupdated Oct 2026
A
Automatically track how you spend time on your devices.
Self-hostedOpen sourceTime Tracking
19,395MPL-2.0Pythonupdated Oct 2026
Online file converter which supports over a thousand different formats.
Self-hostedOpen sourceMiscellaneous
19,217AGPL-3.0Dockerupdated Oct 2026
L
Ad-less chess server powering lichess.org, with official iOS and Android client apps.
Self-hostedOpen sourceGames
18,908AGPL-3.0Scalaupdated Oct 2026
Create, fill, and sign digital documents (alternative to DocuSign).
Self-hostedOpen sourceDocument Management
18,848AGPL-3.0Dockerupdated Oct 2026
Highly customizable online editor providing collaborative editing in real-time.
Self-hostedOpen sourceOffice Suites
18,599Apache-2.0Nodejsupdated Oct 2026
Browse, read and download eBooks using an existing Calibre database.
Self-hostedOpen sourceDocument Management - E-books
18,483GPL-3.0Pythonupdated Sept 2026
Web-based collaborative LaTeX editor.
Self-hostedOpen sourceNote-taking & Editors
18,287AGPL-3.0Rubyupdated Sept 2026
Apprise allows you to send a notification to almost all of the most popular notification services available to us today such as: Telegram, Discord, Slack, Amazon SNS, Gotify, etc.
Self-hostedOpen sourceCommunication - Custom Communication Systems
17,655MITPythonupdated Oct 2026
L
Personal assistant who can live on your server.
Self-hostedOpen sourceAutomation
17,615MITNodejsupdated Oct 2026
Automatic TV Shows downloader and manager for Usenet and BitTorrent. It can grab, sort and rename new episodes and automatically upgrade the quality of files already downloaded when a better quality format becomes available.
Self-hostedOpen sourceMedia Management
17,466GPL-3.0C#updated Oct 2026
Personal music streaming server that works.
Self-hostedOpen sourceMedia Streaming - Audio Streaming
17,318MITPHPupdated Oct 2026
Remote development machines on your own infrastructure.
Self-hostedOpen sourceSoftware Development - IDE & Tools
17,209AGPL-3.0Goupdated Oct 2026
Machine Translation API.
Self-hostedOpen sourceMiscellaneous
17,205AGPL-3.0Pythonupdated Oct 2026
D
Collaborative note taking, wiki and documentation platform that scales.
Self-hostedOpen sourceNote-taking & EditorsKnowledge Management Tools
16,952MITK8Supdated Oct 2026
Complete and fully featured mail server for use by websites & web servers.
Self-hostedOpen sourceCommunication - Email - Complete Solutions
16,896MITRubyupdated Oct 2026
Scalable MQTT broker. Connect 100M+ IoT devices in one single cluster, move and process real-time IoT data with 1M msg/s throughput at 1ms latency.
Self-hostedOpen sourceInternet of Things (IoT)
16,863Apache-2.0Erlangupdated Oct 2026
Manage your projects, tasks and goals. Collaborate via work packages and link them to your pull requests on Github.
Self-hostedOpen sourceSoftware Development - Project Management
16,744GPL-3.0Rubyupdated Oct 2026
Delightfully simple forums. Flarum is the next-generation forum software that makes online discussion fun again.
Self-hostedOpen sourceCommunication - Social Networks and Forums
16,433MITPHPupdated Oct 2026
Self-hostable RSS feed aggregator.
Self-hostedOpen sourceFeed Readers
16,428AGPL-3.0PHPupdated Oct 2026
WhatsApp API gateway exposing messaging as REST endpoints, with a web dashboard, multi-account sessions, and webhook events (alternative to WhatsApp Business API providers).
Self-hostedOpen sourceCommunication - Custom Communication Systems
16,317MITDockerupdated Oct 2026
Powerful, privacy-first, client-side PDF toolkit that allows you to manipulate, edit, merge, and process PDF files directly in your browser.
Self-hostedOpen sourceDocument Management
16,169AGPL-3.0Nodejsupdated Oct 2026
Notification server with Android and CLI clients (alternative to PushBullet).
Self-hostedOpen sourceCommunication - Custom Communication Systems
16,136MITGoupdated Oct 2026
T
Easy file sharing from the command line.
Self-hostedOpen sourceFile Transfer - Single-click & Drag-n-drop Upload
15,908MITGoupdated Sept 2026
Music library manager and MusicBrainz tagger (command-line and Web interface).
Self-hostedOpen sourceMedia Streaming - Audio Streaming
15,856MITPythonupdated Oct 2026
S
Spree is a complete, modular & API-driven open source e-commerce solution for Ruby on Rails.
Self-hostedOpen sourceE-commerce
15,783BSD-3-ClauseRubyupdated Oct 2026
Knowledge-based community software. You can use it to quickly build your Q&A community for product technical support, customer support, user communication, and more.
Self-hostedOpen sourceCommunication - Social Networks and Forums
15,702Apache-2.0Goupdated Sept 2026