Per-step web performance measurement for Playwright: network / CPU / render / INP / memory / coverage at initialization and between steps. Use the test fixture, or the zero-config CLI that runs a JSON scenario and emits budgets. Median regression gate and

A minimal and tiny Node.js Worker Thread Pool implementation, a fork of piscina, but with fewer features

A performance profiler panel addon for Storybook — real-time FPS, INP, CLS, memory and more. Works with all Storybook frameworks.

Concurrent prettier runner [fork to publish Prettier v3 support to npm]

Call an array of promise-returning functions, restricting concurrency to a specified limit.

Contains wrapper function for C++ and rust name demangling, which is intended to be used through WASM in the Firefox profiler.

Always-on event-loop metrics and on-demand CPU/allocation profiling for Signal K server

Profiler Client and Profiler Server for Laravel 5.2+

WebGL performance monitor that showing percentage of GPU/CPU load

Custom Speedscope fork with exported internals

Log feathers service calls and gather profile information on them.

NestJS web profiler module inspired by Symfony's Web Profiler

Easy to use GraphQL performance analysis utility for tracing resolver execution time

CPU and heap profiling and flamegraph visualization tool using @platformatic/react-pprof

StackImpact Node.js Profiler

Detect Browser, Engine, OS, CPU, and Device type/model from User-Agent data. Supports browser & node.js environment

A utility for measuring rendering performance with Preact

A performance tuning tool for Mongoose.

Deepkit Stopwatch

Dev-mode forced-reflow detector. Patches layout-triggering getters, tracks DOM writes, flags read-after-write within the same task, attributes to call site. The #1 silent frame killer, made visible.