Apps Related to Activity Streams

AskBot is a robust, open-source question and answer forum software built on the Django/Python framework, designed to facilitate collaborative knowledge sharing within communities, teams, or organizations.

Vanilla is a versatile, open-source forum software built on PHP, designed for creating vibrant online communities. It offers a balance of ease of use and powerful customization options.

GitBucket is an open-source, self-hosted Git platform built with Scala. It provides a user-friendly web interface for repository management, collaboration tools, and integration capabilities for teams looking for a lightweight alternative to larger platforms.

BuddyPress is a robust, free, and open-source social networking software that integrates seamlessly with WordPress. It allows you to build a fully-featured community website with user profiles, activity streams, groups, and private messaging, providing a decentralized and self-hosted alternative to traditional social platforms.