Diagnose slow npm/pnpm/yarn installations

A slow rewrite of an older project

A slow key-value store using constructors as the key

Are your tests fast or slow? An opinionated testing framework.

`require`s taking too much time? Profile 'em.

In-memory Git for AI agents, slow filesystems (EFS/NFS), and test harnesses. Bash-like exec() dispatcher, no subprocess, isolated per-instance volumes, .gitignore-aware loading, explicit flush.

Zero-dependency HTTP monitoring, APM metrics, percentile latencies (p50/p90/p95/p99), threshold alert callbacks, Prometheus format exporter, slow request profiler, and real-time embedded web dashboard for Express.js.

Hono middleware to slow down your API responses without blocking them

Networking plugin with built-in caching, offline queueing, slow network strategies, circuit breaker support, multipart uploads, and event-driven observability.

Local-first TUI and reports for AI coding-agent session history, cost, tokens, time, and slow-run diagnosis.

My slow adventure explorering easier ways to handle concurrency/parallelism in node

Leverage CDN network jsdelivr/unpkg to provide fast access for TailwindCSS static files. (TailwindCSS's official Play CDN is slow and not proxied in China)

A slow server, to test service resilience

A Vue 3 Component Library. Fairly Complete, Customizable Themes, Uses TypeScript, Not Too Slow

image preloading for slow or large connections

Speed up/slow down effect for ffmpeg.

terminate if the source yields too slow

Caching library that supports double checked caching and stale returns to avoid stampede and slow responses

Fast and slow moving-average crossover strategy with gap, slope, volume, correlation, and opposing-cross filters for TradeJS.

A zero-config local OpenTelemetry collector with a built-in UI — trace waterfall, flame graph, service dependency graph, and slow-span detection. No signup, no SaaS, runs entirely on your machine.