SeaweedFS

File Transfer - Object Storage & File Servers·Go

SeaweedFS is an open source distributed file system supporting WebDAV, S3 API, FUSE mount, HDFS, etc, optim…

Netron

Analytics·Python

Visualizer for neural network and machine learning models.

Mindustry

Games·Java

Factorio-like tower defense game.

Plausible Analytics

Analytics·Elixir

Simple, lightweight (< 1 KB) and privacy-friendly web analytics.

Zulip

Communication - Custom Communication Systems·Python

Zulip is a powerful, open source group chat application.

Calibre

Document Management - E-books·Python

E-book library manager that can view, convert, and catalog e-books in most of the major e-book formats and…

Tasmota

Internet of Things (IoT)·C

Open source firmware for ESP devices.

Kodi

Media Streaming - Multimedia Streaming·C++

Multimedia/Entertainment center, formerly known as XBMC.

ActivityWatch

Time Tracking·Python

Automatically track how you spend time on your devices.

Wagtail

Content Management Systems (CMS)·Python

Django content management system focused on flexibility and user experience.

SimpleX Chat

Communication - Custom Communication Systems·Haskell

The most private and secure chat and applications platform - now with double ratchet E2E encryption.

Lila

Games·Scala

Ad-less chess server powering lichess.org, with official iOS and Android client apps.

Leon

Automation·JavaScript

Personal assistant who can live on your server.

Calibre Web

Document Management - E-books·Python

Browse, read and download eBooks using an existing Calibre database.

Beets

Media Streaming - Audio Streaming·Python

Music library manager and MusicBrainz tagger (command-line and Web interface).

transfer.sh

File Transfer - Single-click & Drag-n-drop Upload·Go

Easy file sharing from the command line.

Spree Commerce

E-commerce·Ruby

Spree is a complete, modular & API-driven open source e-commerce solution for Ruby on Rails.

Mail-in-a-Box

Communication - Email - Complete Solutions

Turns any Ubuntu server into a fully functional mail server with one command.

Transmission

File Transfer - Peer-to-peer Filesharing·C++

Fast, easy, free Bittorrent client.

Seafile

File Transfer & Synchronization·C

File hosting and sharing solution primary for teams and organizations.

Luanti

Games·C++

Voxel game engine (formerly Minetest).

Element

Communication - Custom Communication Systems·JavaScript

Fully-featured Matrix client for Web, iOS & Android.

Mealie

Recipe Management·Python

Material design inspired recipe manager with category and tag management, shopping-lists, meal-planner, and…

Tinode

Communication - Custom Communication Systems·Go

Instant messaging platform.