Things I build and maintain. All but the Android app are open source, and each has a post with install steps, benchmarks and design notes.
Drop-in replacement for the beanstalkd work queue, in Rust: byte-for-byte protocol compatibility checked against the reference, 1.2-1.4× its throughput at 10-100 connections, a write-ahead log, TLS, Prometheus metrics, and an optional 3- or 5-node Raft cluster with online membership changes.
Android barcode app in Flutter: a local, offline library of the short strings you have to show someone: carrier codes, Wi-Fi, addresses, record numbers. Home-screen widget, Quick Settings tile, 25 symbologies, URL-safety heuristics, no ads and no network code. Closed source.
Configuration service in Go: JSON key-path read/write over HTTP or a raw TCP protocol, append-only persistence, optional Raft cluster mode. One binary, no database server; benchmarked against etcd and Consul.
Alpine.js router: declarative routes, dynamic params, external templates, hash or HTML5 history modes, zero runtime dependencies.
Svelte router without SvelteKit (Svelte 3/4/5): dynamic params, custom regex constraints, wildcard routes, hash or HTML5 history modes.
High-performance Node.js & browser template engine. Shaun's first npm package from 2011, rewritten in 2026 for v0.1.0 with static scope analysis, zero runtime dependencies, Express 5 support, and 540k+ ops/s.
