#performance

Scalene: a high-performance, high-precision CPU, GPU, and memory profiler for Python with AI-powered optimization proposals

High performance reactive SQL client written in Java

Cross-platform lib for process and system monitoring in Python

High-precision, one-shot and consistent benchmarking framework/harness for Rust. All Valgrind tools at your fingertips.

An open-source, cloud-native, high-performance gateway unifying multiple LLM providers, from local solutions like Ollama to major cloud providers such as OpenAI, Groq, Cohere, Anthropic, Cloudflare and DeepSeek.

🚴 Call stack profiler for Python. Shows you why your code is slow!

Autonomous Performance Tuning for Kubernetes!

A 100% compliant, self-hosted javascript parser - https://meriyah.github.io/meriyah

Benchmarking and monitoring automation, designed for cloud, built with .NET.

Your agent writes bad React. This catches it

Blazing fast Vue.js Toolchain. Compiler, Linter, Type Checker, Formatter, LSP, Story System, Editor Extensions. This already passed 13k+ test suites, includes real world E2E.

Redis client for Vert.x

Harper is an open-source Node.js performance platform that unifies database, cache, application, and messaging layers into one in-memory process.

Performance testing companion for React and React Native

Offline PII firewall for AI agents and LLM apps: fast local detection and redaction, Claude Code hook, LiteLLM guardrail. Zero network calls, one dependency.

The official e18e ESLint plugin for code modernization and performance best practices

pprof is a tool for visualization and analysis of profiling data

The full-featured Golang Development Framework source code

A framework agnostic fastest and beautiful documentation & markdown tooling

Speed up your website with lighter images without losing quality.

Fast, secure JSON library with tight ZIO integration.

OpenShift integrations and workloads for kube-burner

Quickly find bottlenecks in Rust - one profiler for CPU, memory, SQL, HTTP, I/O and async code.

Speed up a Laravel app by caching the entire response

A high performance memory-bound Go cache

A Storybook Addon for tracking web performance

📝 Markdown and HTML renderer for Svelte 5 — built for streaming AI agent output from Claude Code, ChatGPT, and agentic workflows. XSS-safe defaults, token caching, TypeScript types.

React implementation of the Intersection Observer API to tell you when an element enters or leaves the viewport.

A pytest plugin to create benchmarks

Edit and replay captured network traffic at arbitrary speeds — a suite of pcap tools for *NIX and Windows.