Stream Framework is a Python library, which allows you to build news feed, activity streams and notification systems using Cassandra and/or Redis. The authors of Stream-Framework also provide a cloud service for feed technology:
Iguana is an open source issue management system with a kanban board.
ActivityPub server without Javascript, designed for simplicity and accessibility. Includes calendar, news and sharing economy features to empower your federated community.
Simple, generic, activity streams from the actions on your site.
Add a description, image, and links to the activity-stream topic page so that developers can more easily learn about it.
To associate your repository with the activity-stream topic, visit your repo's landing page and select "manage topics."