Show HN: I'm building an open-source online activity aggregator
defeed.coHey HN - I wanted to share something I’ve been building and using in my day-to-day life, in case it resonates with others here.
A few problems I’ve always had:
- it’s hard to follow more niche updates (e.g. specific tech standards like MCP) because the activity happens across different platforms — releases and discussions on GitHub, community feedback on Reddit/HN, tips on Twitter, etc.
- I struggle to keep up with activity across platforms. Sometimes I only check Reddit and miss interesting stuff on HN or GitHub. It’s just hard to visit every forum or app daily.
- often I don’t want to dive deep into every topic — I just want a quick, ELI5-style summary.
- social platforms like Twitter can have useful content, but their algorithms are tuned for engagement and doomscrolling, which can waste a lot of your time.
Defeed is my attempt to solve this - a single feed/app that gives you all the updates you need.
Things that already work:
- aggregates activity from multiple 3rd-party sources (not just RSS)
- content-based recommendations using embedding similarity search
- short and long AI-generated summaries for each item (still improving)
- added some public example feeds (LMK if you want access to create custom feeds, or register for early access on the website)
I’d love your feedback on:
- What kinds of feeds would you find most valuable? (I can share example public feeds based on that.)
- Would you find it useful to include more personal or sensitive data (like emails) if the architecture allowed you to self-host those feeds privately (on your own infra)?
GitHub: https://github.com/defeedco/defeed Demo feeds: https://defeed.co