ALL TOOLS

Lightweight CalDAV and CardDAV server based on sabre/dav

Server for calendar sharing (CalDAV) that uses a PostgreSQL database as a data store

Simple calendar and contact server with extremely low administrative overhead

Realtime server for reliable two-way communication over WebSockets, Server-sent events, etc

Peer-to-peer chat app that is serverless, decentralized, and ephemeral

A simple, fast, and reliable chat server powered by Matrix

Whistleblowing software enabling anyone to easily set up and maintain a secure reporting platform

Software framework for decentralized, peer-to-peer networking

Podcast management hosting platform that includes the latest podcast 2.0 standards, an automated Fediverse feed, analytics, an embeddable player, and more

Extra-awesome, extra-lightweight blog engine

A free and open source blog management platform

Lightweight federated publishing platform focused on personal idea sharing (documentation in Chinese).

A lightweight, easy-to-set-up flat-file blogging engine

Private blogging system with markdown editing and built in RSS reader

Databaseless PHP blogging platform. A flat-file CMS that allows you to create a fast, secure, and powerful website or blog in seconds

Collaborative social publishing platform

A minimalist blogging platform for writers and thinkers

A lightweight XML-powered blog and content management system

Serendipity (s9y) is a highly extensible and customizable PHP blog engine using Smarty templating

Writing software for starting a minimalist, federated blog — or an entire community

Streamline event ticketing with open-source sales and check-in tools

Resource scheduling solution offering a flexible, mobile-friendly, and extensible interface for organizations to manage resource reservations

Web analytics and dashboard (alternative to Google Analytics).