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1. os-tack/ostk.aios-tack/ostk.aiPublic

   ostk.ai kernel binaries and examples

   Shell 12 1

2. os-tack/ostk-recallos-tack/ostk-recallPublic

   Local-first cross-corpus retrieval MCP server — model2vec embeddings + LanceDB (Tantivy BM25) + SQLite. One binary; hybrid (dense + BM25) search across markdown, code, and Claude Code sessions.

   Rust 6

3. os-tack/ostk-cacheos-tack/ostk-cachePublic

   Context-aware caching proxy for Anthropic and OpenAI — maximizes prompt-cache hit rates by anchoring long-lived context into stable boundaries. Drop-in for Claude Code, Codex, Cursor, and custom ha…

   Rust 9 1

4. os-tack/find-the-needleos-tack/find-the-needlePublic

   Proofs of the OS stack. 23 Docker benchmarks. Submit broken Dockerfiles, watch models fix them.

   Python 3

5. aetherwing-io/mishaetherwing-io/mishPublic

   The LLM-native shell — five MCP tools for structured output, error diagnostics, and process control

   Rust 5

6. os-tack/docfreshos-tack/docfreshPublic

   Track documentation freshness against source code

   Rust 1