Open-source performance software
1333 open-source libraries, tools and applications tagged performance, ranked by how closely performance is their primary purpose, then by adoption and maintenance health. Each entry links to a page with sources, use cases and when to choose or avoid it.
1333 products, primary matches first, then adoption-weighted; health v2 shown.
| Product | Health v2 | Stars | Maturity |
|---|---|---|---|
| sitespeedio/coach The Coach is a web performance tool that analyzes pages and gives advice on performance problems, acting as a modern successor to YSlow. It… | 10 | 1196 | maintenance |
| EvandroLG/pageAccelerator pageAccelerator is a very lightweight (2.2KB minified) JavaScript library that speeds up web page navigation using ajax and pushState, simi… | 23 | 1195 | maintenance |
| haydenjames/bench-scripts A curated collection of Linux server benchmarking scripts and command-line tools for testing CPU, disk I/O, memory, and network performance… | 32 | 1194 | maintenance |
| maoberlehner/vue-lazy-hydration A renderless Vue.js component library that enables lazy hydration of server-side rendered Vue components. It delays client-side hydration o… | 23 | 1187 | maintenance |
| discord/fastglobal FastGlobal is an Elixir/Erlang library that provides fast, copy-free access to large shared global data by leveraging the Erlang VM's const… | 32 | 1176 | maintenance |
| lewis6991/impatient.nvim A Neovim plugin written in Lua that speeds up editor startup by caching compiled Lua module bytecode and module path resolutions. It is now… | 10 | 1171 | maintenance |
| thlorenz/deoptigate Deoptigate is a CLI tool that investigates V8/Node.js function deoptimizations by processing v8 logs and presenting them in a visual viewer… | 32 | 1169 | maintenance |
| YahooArchive/boomerang Boomerang is a JavaScript library that measures web page performance characteristics from real end users' browsers and beacons the results … | 10 | 1169 | maintenance |
| malisper/pgrust pgrust is a full rewrite of PostgreSQL in Rust that is wire- and SQL-compatible with Postgres and passes all 46,066 tests of the Postgres r… | 78 | 5288 | experimental |
| micmro/performance-bookmarklet A bookmarklet and browser extension (Chrome/Firefox) that analyzes the current page's performance using the Resource Timing, Navigation Tim… | 23 | 1150 | maintenance |
| wangyi-fudan/wyhash wyhash is a fast, high-quality 64-bit non-cryptographic hash function with accompanying PRNG (wyrand/w1rand) and hash map, written in porta… | 52 | 1148 | maintenance |
| tensorflow/benchmarks A benchmark framework for TensorFlow, containing PerfZero for running and reporting TensorFlow benchmarks and legacy CNN benchmark scripts … | 10 | 1148 | maintenance |
| wasabeef/Takt Takt is an Android library that measures an app's frame rate (FPS) using the Choreographer API and displays it as an on-screen overlay. It … | 32 | 1144 | maintenance |
| Adaptive Loading A suite of React hooks and utilities for adaptive loading based on a user's network conditions, device memory, CPU cores, and media capabil… | 68 | 5155 | experimental |
| LLMPerf LLMPerf is a Python library for benchmarking and validating the performance of LLM APIs. It runs load tests measuring inter-token latency a… | 10 | 1123 | maintenance |
| haywire/haywire Haywire is an asynchronous HTTP server framework written in C, built on the libuv event loop that powers node.js. It aims for a minimal fea… | 32 | 1122 | maintenance |
| BitOne/php-meminfo A PHP extension that dumps the content of PHP process memory to JSON and provides CLI analyzers to inspect it. It helps developers understa… | 23 | 1121 | maintenance |
| emmericp/MoonGen MoonGen is a scriptable high-speed packet generator built on DPDK and LuaJIT that can saturate 10 Gbit/s Ethernet links with 64-byte packet… | 53 | 1118 | maintenance |
| AntonioRedondo/AnotherMonitor AnotherMonitor is an Android application that monitors and records CPU and memory usage of Android devices in real time, displaying values … | 32 | 1111 | maintenance |
| baidu-research/DeepBench DeepBench is a benchmarking suite from Baidu Research that measures the performance of fundamental deep learning operations (matrix multipl… | 32 | 1109 | maintenance |
| CaffeineMC/phosphor-fabric Phosphor is a Fabric mod for Minecraft that optimizes the game's lighting engine to dramatically improve performance and fix related bugs. … | 10 | 1099 | maintenance |
| kitsunyan/intel-undervolt A Linux CLI tool and daemon for undervolting Intel CPUs (Haswell and newer) and altering throttling limits such as package power (TDP) and … | 23 | 1096 | maintenance |
| FRiCKLE/ngx_cache_purge An nginx module that adds the ability to purge content from nginx's FastCGI, proxy, SCGI and uWSGI caches. It exposes configuration directi… | 32 | 1092 | maintenance |
| gregs1104/pgtune Pgtune is a Python CLI script that generates a tuned PostgreSQL postgresql.conf based on server memory, workload type, and expected connect… | 32 | 1088 | maintenance |
| jmcarp/nplusone nplusone is a Python library that detects the n+1 queries problem in ORMs like SQLAlchemy, Peewee, and the Django ORM by monitoring lazy lo… | 32 | 1069 | maintenance |
| heiyeluren/xmm XMM is a fully self-implemented third-party memory manager for Go, built on Linux mmap, that allocates and frees memory independently of Go… | 23 | 1069 | maintenance |
| SusionSuc/rabbit-client Rabbit is an Android application performance monitoring (APM) framework written in Kotlin. It provides startup timing, FPS and memory analy… | 23 | 1067 | maintenance |
| torvalds/test-tlb A small C benchmark tool by Linus Torvalds that measures memory access latency and TLB behavior across working-set sizes from a few kilobyt… | 32 | 1065 | maintenance |
| chengkehan/GPUSkinning A Unity library that replaces Unity's built-in CPU bone animation with custom GPU skinning, storing bone matrices in textures or compute bu… | 23 | 1065 | maintenance |
| GoogleChromeLabs/idlize A collection of small JavaScript helper classes and methods for implementing the idle-until-urgent performance pattern, built around reques… | 10 | 1063 | maintenance |
| C-Blosc2 C-Blosc is a high-performance, lossless compression library for binary data that uses blocking, shuffling, SIMD, and multi-threading to com… | 64 | 1059 | maintenance |
| handcircus/Unity-Resource-Checker A Unity editor utility that lists active textures, materials, and meshes in the current scene with their memory sizes, compression types, a… | 32 | 1042 | maintenance |
| minio/sha256-simd A pure Go library that accelerates SHA256 hashing using hardware instructions: AVX512 and Intel SHA Extensions on x86, and ARM64 Cryptograp… | 23 | 1039 | maintenance |
| pyheat An IPython magic extension that profiles Python code and renders the results as a heat map, wrapping the py-heat library. It exposes a %%he… | 32 | 1029 | maintenance |
| kenjis/php-framework-benchmark A benchmark suite that measures the minimum bootstrap overhead of PHP frameworks using a Hello World application. It compares requests per … | 32 | 1027 | maintenance |
| tmm1/perftools.rb A Ruby binding to Google's gperftools that provides CPU profiling of Ruby code via sampling. It supports profiling blocks, whole applicatio… | 32 | 1025 | maintenance |
| facebookresearch/CompilerGym CompilerGym is a Python library of OpenAI Gym-compatible reinforcement learning environments for compiler and program optimization tasks, c… | 10 | 1021 | maintenance |
| HTMLMin/Laravel-HTMLMin A Laravel package that minifies HTML responses and Blade templates at compile time, built on Mr Clay's Minify library. It supports Laravel … | 23 | 1018 | maintenance |
| leventov/Koloboke Koloboke is a family of Java collections projects providing primitive-specialized, high-performance implementations of maps and sets as an … | 23 | 1018 | maintenance |
| httperf/httperf httperf is a command-line HTTP load generator for measuring web server performance. It supports HTTP/1.1 and SSL and is designed to generat… | 32 | 1016 | maintenance |
| dkern/jquery.lazy jQuery Lazy is a lightweight, highly configurable lazy-loading plugin for jQuery and Zepto that delays loading of images, background images… | 23 | 1016 | maintenance |
| efficient/cuckoofilter A C++ library implementing cuckoo filters, a space-efficient probabilistic data structure for approximate set-membership queries that suppo… | 32 | 1014 | maintenance |
| Oldpan/Pytorch-Memory-Utils A small set of Python scripts for tracking GPU memory usage in PyTorch, including per-line tensor allocation reports and model parameter/in… | 32 | 1013 | maintenance |
| yizhang7210/liang Liang is a Python library for specifying non-functional requirements like latency thresholds directly in function interfaces via decorators… | 32 | 1010 | maintenance |
| spacejam/rio rio is a pure Rust library providing safe, misuse-resistant bindings for Linux's io_uring asynchronous I/O interface, built directly on lib… | 32 | 1009 | maintenance |
| speedb-io/speedb Speedb is a high-performance embedded key-value storage engine that is 100% RocksDB compatible and works as a drop-in replacement library. … | 23 | 1009 | maintenance |
| nnethercote/dhat-rs A Rust crate providing heap profiling and ad hoc profiling capabilities similar to Valgrind's DHAT, without requiring external tools. It al… | 23 | 1005 | maintenance |
| maintell/webBenchmark A Go-based command-line HTTP benchmark tool that floods a target URL with concurrent requests to test server bandwidth and performance. It … | 23 | 1004 | maintenance |
| stratiformltd/react-loadable-visibility A JavaScript library that wraps react-loadable and @loadable/component to defer loading React components until they become visible in the v… | 23 | 1004 | maintenance |
| xunleif2e/vue-lazy-component A Vue.js 2.x plugin that provides component-level lazy loading. It loads real components when they become visible (or after a timeout), sho… | 23 | 1003 | maintenance |
| LianjiaTech/keframe Keframe is a Flutter component library that optimizes UI fluency through frame-splitting rendering, reducing jank during page switches and … | 23 | 971 | maintenance |
| LaurieWired/tailslayer Tailslayer is a C++ header-only library that reduces tail latency in RAM reads caused by DRAM refresh stalls. It replicates data across ind… | 46 | 2855 | experimental |
| gabrielpetersson/fast-grid A highly performant DOM-based web table/grid library written in TypeScript that can render millions of rows at constant time complexity. It… | 30 | 2304 | experimental |
| Unity-Technologies/AutoLOD AutoLOD is a Unity framework that automatically generates levels of detail (LOD) for 3D model assets on import and optimizes whole scenes v… | 23 | 2060 | experimental |
| mypyc/mypyc Mypyc is a compiler that translates type-annotated Python modules into fast C extensions, using mypy for type checking and inference. It po… | 32 | 2023 | experimental |
| facebookexperimental/libunifex libunifex is a C++ library implementing the sender/receiver asynchronous programming model proposed for C++ standardization. It provides sc… | 57 | 1723 | experimental |
| fzyzcjy/flutter_smooth A Flutter library that keeps apps at roughly 60 FPS even when widget trees are very heavy to build or layout, by offloading expensive work … | 77 | 1712 | experimental |
| FastVM/minivm MiniVM is a small but optimizing virtual machine and runtime written in C11, featuring a just-in-time compiler built on Cuik's TB backend. … | 30 | 1667 | experimental |
| lcompilers/lpython LPython is an ahead-of-time Python compiler written in C++ that compiles a subset of Python to fast native binaries via LLVM, C, C++, and W… | 44 | 1635 | experimental |
| luajit-remake/luajit-remake A from-scratch re-engineering of LuaJIT aiming to build a multi-tier method-JIT for Lua, with the interpreter and JIT tiers auto-generated … | 32 | 1299 | experimental |
| mrousavy/react-native-multithreading A React Native library that provides fast, low-overhead multithreading via JSI, letting developers offload blocking JavaScript calls or exp… | 23 | 1173 | experimental |
| gmetais/sw-delta sw-delta is an incremental cache for the web that uses the Service Worker API to download only the delta (diff) between a cached file and i… | 23 | 1097 | experimental |
| thinking-machines-lab/batch_invariant_ops A Python library that replaces standard PyTorch CUDA kernels with batch-invariant versions, ensuring identical results regardless of batch … | 37 | 1080 | experimental |
| rust-lang/portable-simd The official Rust project group repository developing a portable SIMD API for the Rust standard library, exposing architecture-independent … | 75 | 1076 | experimental |
| danielealbano/cachegrand cachegrand is a high-performance key-value store and data ingestion, processing, and serving platform written in C and optimized for modern… | 23 | 1004 | experimental |
| react-loadable React Loadable is a higher-order component for loading React components with dynamic imports, enabling code splitting with a loading state.… | 32 | 16495 | abandoned |
| facebookarchive/AsyncDisplayKit AsyncDisplayKit (now renamed Texture) is an iOS UI framework built on top of UIKit that keeps complex user interfaces smooth by moving expe… | 10 | 13318 | abandoned |
| dotnet/coreclr CoreCLR is the execution runtime for .NET Core, containing the garbage collector, JIT compiler, primitive data types, and low-level base cl… | 10 | 12755 | abandoned |
| Turbolinks Turbolinks is a JavaScript library that speeds up web application navigation by intercepting link clicks, fetching pages via fetch/HTML5 Hi… | 10 | 12572 | abandoned |
| filamentgroup/loadCSS loadCSS is a small JavaScript utility and pattern for loading CSS stylesheets asynchronously so they do not block page rendering. It is now… | 10 | 6628 | abandoned |
| erikbern/ann-benchmarks A benchmarking environment for approximate nearest neighbor (ANN) search algorithms, with pre-generated HDF5 datasets and Docker containers… | 70 | 5735 | abandoned |
| callmecavs/layzr.js Layzr.js is a small JavaScript library for lazy loading images on web pages. It defers image loading until elements scroll into view and se… | 10 | 5493 | abandoned |
| swooletw/laravel-swoole A PHP composer package that runs Laravel and Lumen applications on a high-performance Swoole-based HTTP server, benchmarked up to 5x faster… | 10 | 4024 | abandoned |
| uber-archive/go-torch go-torch is a command-line tool that stochastically profiles Go programs by collecting stack traces via pprof and rendering them as flame g… | 10 | 3932 | abandoned |
| Chikage0o0/Linux-NetSpeed A shell script that integrates commonly used Linux TCP network acceleration options (BBR, BBR Plus, BBR2, and related kernel modules) into … | 10 | 3746 | abandoned |
| nolanlawson/optimize-js A JavaScript optimization tool that wraps immediately-invoked and likely-to-be-invoked functions in parentheses to speed up initial parsing… | 32 | 3728 | abandoned |
| toddmotto/echo Echo.js is a standalone 2KB JavaScript micro-library for lazy-loading images using HTML5 data-* attributes. It supports lazy-loading of bot… | 49 | 3692 | abandoned |
| rkern/line_profiler line_profiler is a Python module for line-by-line profiling of functions, and kernprof is a companion script for running it or the standard… | 10 | 3582 | abandoned |
| Netflix/vector Vector is an on-host performance monitoring web application that exposes high-resolution system and application metrics (backed by PCP) in … | 10 | 3568 | abandoned |
| OptaPlanner OptaPlanner is a Java-based AI constraint solver for mathematical optimization problems such as vehicle routing, employee rostering, task a… | 10 | 3515 | abandoned |
| rcrowley/go-metrics A Go port of Coda Hale's Dropwizard Metrics library providing counters, gauges, histograms, meters, and timers for application instrumentat… | 10 | 3462 | abandoned |
| codemix/fast.js fast.js is a JavaScript library providing faster user-land reimplementations of common native built-in functions like forEach, map, and red… | 32 | 3381 | abandoned |
| LinkedInAttic/LayoutKit LayoutKit is a fast, declarative view layout library for iOS, macOS, and tvOS, created by LinkedIn as a performant alternative to Auto Layo… | 10 | 3130 | abandoned |
| TumblrArchive/TMCache TMCache is a fast parallel key/value object cache for iOS and OS X, combining an in-memory cache (TMMemoryCache) with an on-disk cache (TMD… | 23 | 3019 | abandoned |
| uber-archive/pyflame Pyflame is a high-performance sampling profiler for Python implemented in C++ that uses Linux ptrace to capture call stacks without instrum… | 10 | 2979 | abandoned |
| redox-os/tfs TFS is a next-generation, modular file system written in Rust for Redox OS, inspired by ZFS with features like copy-on-write, full-disk com… | 32 | 2939 | abandoned |
| what-studio/profiling An interactive continuous Python profiler with a TUI viewer, supporting both deterministic and statistical profiling, including live and re… | 10 | 2933 | abandoned |
| colesbury/nogil A proof-of-concept fork of CPython that removes the global interpreter lock (GIL) to enable true multithreaded Python execution. Developmen… | 10 | 2910 | abandoned |
| tostercx/GTAO_Booster_PoC A proof-of-concept DLL injection that patches two bugs in GTA Online to drastically reduce load times on CPU-bound systems. It was official… | 10 | 2868 | abandoned |
| airbnb/infinity Infinity.js is a JavaScript library that brings UITableView-style list virtualization to the web, speeding up scrolling through very long l… | 10 | 2778 | abandoned |
| Pasvaz/bindonce Bindonce is an AngularJS library that provides zero-watch data binding directives (bo-* equivalents of ng-* directives) for rendering stati… | 23 | 2700 | abandoned |
| google/tracing-framework A set of JavaScript libraries, tools, and visualizers from Google for instrumenting, tracing, and analyzing complex web applications. It he… | 10 | 2623 | abandoned |
| dinbror/blazy bLazy is a lightweight pure JavaScript library (under 1.4KB gzipped) for lazy loading and multi-serving images, iframes, videos, and other … | 32 | 2589 | abandoned |
| facebookarchive/BOLT BOLT (Binary Optimization and Layout Tool) is a Linux command-line utility that optimizes the performance of native binaries by rearranging… | 10 | 2532 | abandoned |
| Pyston Pyston v1 was a faster, highly compatible implementation of the Python programming language, focused on improving runtime performance. This… | 23 | 2492 | abandoned |
| neuecc/Utf8Json Utf8Json is a high-performance, zero-allocation JSON serializer for C# that reads and writes directly to UTF8 binary, targeting .NET, .NET … | 10 | 2381 | abandoned |
| GoogleChrome/web-vitals-extension A Chrome extension by Google that measures Core Web Vitals (LCP, CLS, INP) plus diagnostic metrics (TTFB, FCP) in real time, matching how C… | 10 | 2379 | abandoned |
| Glimpse Glimpse is an open-source diagnostics platform for ASP.NET web applications that inspects requests in real time, profiling server-side acti… | 10 | 2310 | abandoned |
| getify/LABjs LABjs is a dynamic JavaScript script loader that loads all scripts in parallel while allowing explicit execution-order dependencies via a c… | 10 | 2259 | abandoned |
| seiginonakama/BlockCanaryEx BlockCanaryEx is an Android library, based on BlockCanary, that detects UI thread blocks and identifies the heavy methods causing them. It … | 32 | 2172 | abandoned |