performance — open-source software health

npm

92Excellenthealth index

fastify/fastify

Fast and low overhead web framework, for Node.js

JavaScript★ 36.7K↓ 38.6M/moJul 17, 2026

MITJul 17, 2026 · metrics 1.13.0

PyPI

92Excellenthealth index

uxlfoundation/oneDNN

oneAPI Deep Neural Network Library (oneDNN)

C++★ 4,024Jul 20, 2026

Apache-2.0Jul 20, 2026 · metrics 1.13.0

90Excellenthealth index

gofiber/fiber

⚡️ Express inspired web framework written in Go

Go★ 40KJul 15, 2026

MITJul 15, 2026 · metrics 1.13.0

npm · Go · crates.io +2

88Excellenthealth index

valkey-io/valkey-glide

An open source Valkey client library that supports Valkey, and Redis open source 6.2, 7.0 and 7.2. Valkey GLIDE is designed for reliability, optimized performance, and high-availability, for Valkey and Redis OSS based applications. GLIDE is a multi language client library, written in Rust with programming language bindings, such as Java and Python

Java · Python · Rust★ 765↓ 1.4M/moJul 17, 2026

Apache-2.0Jul 17, 2026 · metrics 1.13.0

87Excellenthealth index

grafana/k6

A modern load testing tool, using Go and JavaScript

Go · JavaScript★ 31.1KJul 22, 2026

AGPL-3.0Jul 22, 2026 · metrics 1.13.0

85Excellenthealth index

dataDog/dd-trace-go

Datadog Go Library including APM tracing, profiling, and security monitoring.

Go★ 847↓ 0/moJul 13, 2026

Custom licenseJul 13, 2026 · metrics 1.13.0

Maven

82Goodhealth index

AxonFramework/AxonFramework

Framework for Evolutionary Message-Driven Microservices on the JVM

Java★ 3,595Jul 15, 2026

Apache-2.0Jul 15, 2026 · metrics 1.13.0

82Goodhealth index

anyproto/any-sync

An open-source protocol enabling high-performance, local-first, peer-to-peer, end-to-end encrypted collaborative apps.

Go★ 1,660Jul 17, 2026

MITJul 17, 2026 · metrics 1.13.0

Maven

82Goodhealth index

fmtlib/fmt

A modern formatting library

C++★ 23.7KJul 21, 2026

MITJul 21, 2026 · metrics 1.13.0

PyPI · npm

82Goodhealth index

locustio/locust

Write scalable load tests in plain Python 🚗💨

Python · TypeScript★ 28K↓ 13.1M/moJul 18, 2026

MITJul 18, 2026 · metrics 1.13.0

npm

82Goodhealth index

tinylibs/tinybench

🔎 A simple, tiny and lightweight benchmarking library!

TypeScript★ 2,350↓ 260M/moJul 22, 2026

MITJul 22, 2026 · metrics 1.13.0

PyPI

81Goodhealth index

GridTools/gt4py

Python library for generating high-performance implementations of stencil kernels for weather and climate modeling from a domain-specific language (DSL).

Python★ 147↓ 25.7K/moJul 20, 2026

BSD-3-ClauseJul 20, 2026 · metrics 1.13.0

—

81Goodhealth index

Microsoft/perfview

PerfView is a CPU and memory performance-analysis tool

C#★ 4,715Jul 17, 2026

MITJul 17, 2026 · metrics 1.13.0

81Goodhealth index

gin-gonic/gin

Gin is a high-performance HTTP web framework written in Go. It provides a Martini-like API but with significantly better performance—up to 40 times faster—thanks to httprouter. Gin is designed for building REST APIs, web applications, and microservices.

Go★ 88.9KJul 15, 2026

MITJul 15, 2026 · metrics 1.13.0

Maven

81Goodhealth index

pinpoint-apm/pinpoint

APM, (Application Performance Management) tool for large-scale distributed systems.

Java★ 13.8KJul 20, 2026

Apache-2.0Jul 20, 2026 · metrics 1.13.0

PyPI

80Goodhealth index

cython/cython

The most widely used Python to C compiler

Cython · Python★ 10.8KJul 17, 2026

Apache-2.0Jul 17, 2026 · metrics 1.13.0

NuGet

79Goodhealth index

dotnet/BenchmarkDotNet

Powerful .NET library for benchmarking

C#★ 11.5KJul 16, 2026

MITJul 16, 2026 · metrics 1.13.0

npm

79Goodhealth index

gkjohnson/three-mesh-bvh

A BVH implementation to speed up raycasting and enable spatial queries against three.js meshes.

JavaScript★ 3,421↓ 14.1M/moJul 15, 2026

MITJul 15, 2026 · metrics 1.13.0

Maven · RubyGems

79Goodhealth index

jruby/jruby

JRuby, an implementation of Ruby on the JVM

Ruby · Java★ 3,911Jul 22, 2026

Custom licenseJul 22, 2026 · metrics 1.13.0

—

78Goodhealth index

Icinga/icinga2

The core of our monitoring platform with a powerful configuration language and REST API.

C++★ 2,217Jul 18, 2026

GPL-3.0Jul 18, 2026 · metrics 1.13.0

78Goodhealth index

instana/go-sensor

:rocket: Go Distributed Tracing & Metrics Sensor for Instana

Go★ 129↓ 0/moJul 14, 2026

MITJul 14, 2026 · metrics 1.13.0

78Goodhealth index

instana/golang-sensor

:rocket: Go Distributed Tracing & Metrics Sensor for Instana

Go★ 129Jul 17, 2026

MITJul 17, 2026 · metrics 1.13.0

RubyGems

78Goodhealth index

okuramasafumi/alba

Alba is a JSON serializer for Ruby, JRuby and TruffleRuby.

Ruby★ 1,189Jul 20, 2026

MITJul 20, 2026 · metrics 1.13.0

RubyGems

78Goodhealth index

rails/bootsnap

Boot large Ruby/Rails apps faster

Ruby · C★ 2,738Jul 17, 2026

MITJul 17, 2026 · metrics 1.13.0

RubyGems

77Goodhealth index

instana/ruby-sensor

💎 Ruby Distributed Tracing & Metrics Sensor for Instana

Ruby★ 26Jul 15, 2026

MITJul 15, 2026 · metrics 1.13.0

PyPI

77Goodhealth index

opesci/devito

DSL and compiler framework for automated finite-differences and stencil computation

Python★ 708Jul 17, 2026

MITJul 17, 2026 · metrics 1.13.0

npm · RubyGems

77Goodhealth index

sitespeedio/sitespeed.io

sitespeed.io is an open-source tool for comprehensive web performance analysis, enabling you to test, monitor, and optimize your website’s speed using real browsers in various environments.

JavaScript · Pug · SCSS★ 5,004↓ 18.9K/moJul 16, 2026

MITJul 16, 2026 · metrics 1.13.0

npm

76Goodhealth index

artilleryio/artillery

The complete load testing platform. Everything you need for production-grade load tests. Serverless & distributed. Load test with Playwright. Load test HTTP APIs, GraphQL, WebSocket, and more. Use any Node.js module.

JavaScript · TypeScript★ 9,025Jul 16, 2026

MPL-2.0Jul 16, 2026 · metrics 1.13.0

crates.io

75Goodhealth index

google/zerocopy

Zerocopy makes zero-cost memory manipulation effortless. We write `unsafe` so you don’t have to.

Rust★ 2,515↓ 66.6M/moJul 14, 2026

Apache-2.0Jul 14, 2026 · metrics 1.13.0

Maven

74Goodhealth index

eclipse-vertx/vertx-sql-client

High performance reactive SQL client written in Java

Java★ 911Jul 17, 2026

Apache-2.0Jul 17, 2026 · metrics 1.13.0

#performance