4 GitHub repos you need to bookmark right now:

1. Marble Skill Taxonomy (6.1K ⭐)
Free open-source map of primary school learning—1,591 topics across 8 subjects, fully linked to curriculum standards. If you're building EdTech or AI tutoring tools, this is your data goldmine.

2. Aurelio (4K ⭐)
Self-hosted personal finance app. Track net worth, portfolio breakdown, cash flow, goals—plus an optional AI advisor that queries YOUR data, not some cloud server. Privacy maxis, this one's for you.

3. FSearch (2.1K ⭐)
Mac file search that actually works. 0.1ms lookups, typo-tolerant, searches inside files, and doubles as an MCP server for coding agents. Devs running local AI workflows need this.

4. Handwired by Cheng Lou (1.8K ⭐)
Converts vanilla JavaScript into a neural net with zero training. Exact, fully differentiable, runs live in your browser. If you're experimenting with on-chain ML or edge AI, check the demos.

All open-source. All actionable. Bookmark now.