marclou / mailcheap

Newsletters where you pay for the emails you send, not for dormant subscribers, at a fraction of the price of beehiiv and the like. Open source: self-host it, or use mailcheap.ai.

neural-maze / substack-brain-course

A 6-week open-source course on harness engineering: durable pipelines, temporal knowledge graphs, error analysis and MCP.

alxgntv / substack-api-mcp

Move your blog to Substack Newsletter in few clikcs

FireBird-Technologies / NotestackAI

NotebookLM Alternative + Marketing agent optimized for publishers on substack/Medium/Wordpress.