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1. itch-book itch-book Public

   NASDAQ TotalView-ITCH 5.0 parser and order book: header-only C++23 core, pip install itch-book for BBO, trades, order-by-order and depth Parquet tables

   C++ 1

2. spsc-ring spsc-ring Public

   Bounded, wait-free single-producer/single-consumer ring buffer in Rust and C++ — acquire/release ordering, cache-line isolation, benchmarks vs rtrb/crossbeam, and loom verification

   Rust

3. tsc-latency tsc-latency Public

   Header-only C++20 latency measurement: invariant-TSC timestamps, log-linear HDR histogram, tail percentiles, and a coordinated-omission correction

   C++

4. l2sync l2sync Public

   Multi-exchange crypto L2 order book aggregator with snapshot+diff resync (async Rust)

   Rust

5. fixed-decimal fixed-decimal Public

   Exact fixed-point decimal for prices and quantities — i64-backed, no_std, compile-time scale & unit safety, no floating point in the value path

   Rust