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 |
|---|---|---|---|
| romkatv/zsh-bench zsh-bench is a benchmarking tool that measures user-visible latency of interactive zsh, such as input lag and command lag. It also includes… | 64 | 1039 | active |
| CryoUtilities CryoUtilities is a Go-based utility with a GUI that tunes performance and manages storage on the Steam Deck, including swap resizing, kerne… | 23 | 3532 | maintenance |
| alphadose/haxmap HaxMap is a fast, memory-efficient, lock-free concurrent hashmap library for Go, built on xxHash and Harris lock-free lists. It offers a ge… | 23 | 1037 | active |
| jhalterman/expiringmap ExpiringMap is a high-performance, zero-dependency, thread-safe Java ConcurrentMap implementation whose entries expire automatically. It su… | 32 | 1036 | stable |
| MCRcortex/nvidium Nvidium is an alternate rendering backend for the Sodium Minecraft mod that leverages NVIDIA-specific GPU features (Turing architecture and… | 74 | 1035 | active |
| MengRao/fmtlog fmtlog is a high-performance C++ logging library built on the fmt library, offering nanosecond-level runtime latency and asynchronous multi… | 23 | 1034 | active |
| linux-rdma/perftest A collection of C-based performance micro-benchmark tools for InfiniBand and RoCE networks, built on the ibverbs API. It measures bandwidth… | 90 | 1033 | active |
| python/pyperformance pyperformance is the official Python Performance Benchmark Suite, providing an authoritative set of real-world benchmarks for Python implem… | 79 | 1032 | active |
| ogxd/gxhash GxHash is a blazingly fast, robust non-cryptographic hashing algorithm implemented in Rust with zero dependencies. It uses hardware-acceler… | 56 | 1028 | active |
| numpy/x86-simd-sort A C++ template library providing high-performance SIMD-accelerated sorting routines (qsort, qselect, partial sort, argsort, key-value sort)… | 59 | 1027 | active |
| cloudwego/goref Goref is a Go heap object reference analysis tool built on the Delve debugger. It displays the space and object count distribution of Go he… | 64 | 1026 | active |
| aklomp/base64 A fast Base64 stream encoder/decoder library written in C99 with SIMD acceleration (AVX2, AVX512, NEON, SSE) and optional OpenMP support. I… | 61 | 1022 | active |
| airspeed-velocity/asv Airspeed Velocity (asv) is a Python benchmarking tool that tracks a project's performance over its git history. It generates an interactive… | 78 | 1021 | active |
| djkoloski/rust_serialization_benchmark A benchmark suite comparing Rust serialization frameworks on serialize, deserialize, borrow, size, and compression metrics, including zero-… | 76 | 1020 | active |
| jrfonseca/gprof2dot A Python command-line script that converts output from many profilers (perf, callgrind, gprof, Python profilers, etc.) into Graphviz dot ca… | 62 | 3456 | maintenance |
| couchbase/moss Moss (memory-oriented sorted segments) is a pure-Go library providing a fast, ordered, persistable key-value collection. It uses a simplifi… | 70 | 1015 | active |
| krakjoe/apcu APCu is a PHP extension providing an in-memory key-value store for caching PHP variables within a single process. It is the userland-only p… | 79 | 1013 | stable |
| GoogleChromeLabs/critters Critters is a Webpack plugin that inlines critical CSS into HTML and lazy-loads the remaining stylesheets. It eliminates render-blocking CS… | 10 | 3429 | maintenance |
| eyalz800/zpp_bits A lightweight, header-only C++20 binary serialization library with built-in RPC support, designed for seamless and fast serialization of ar… | 87 | 1011 | active |
| yc9559/uperf Uperf is a userspace performance controller for Android that dynamically tunes CPU frequencies, thread affinity, and other sysfs parameters… | 23 | 3417 | maintenance |
| RaftLib/RaftLib RaftLib is an open-source C++ library for building parallel and concurrent data processing pipelines using a stream/dataflow programming mo… | 23 | 999 | active |
| facebookarchive/FBMemoryProfiler An iOS library by Facebook that provides in-app memory profiling tools, letting developers browse objects in memory over time using FBAlloc… | 10 | 3374 | maintenance |
| addyosmani/basket.js Basket.js is a JavaScript script loader that caches scripts and resources in localStorage to improve page load times. It provides a Promise… | 23 | 3348 | maintenance |
| aragozin/jvm-tools Swiss Java Knife (SJK) is a command-line tool for JVM diagnostics, troubleshooting, and profiling built on standard JVM diagnostic interfac… | 32 | 3339 | maintenance |
| jokkedk/webgrind Webgrind is a web-based frontend for viewing Xdebug profiling data from PHP applications, offering a lightweight subset of kcachegrind feat… | 45 | 3325 | maintenance |
| yyzybb537/libgo libgo is a stackful coroutine library with collaborative scheduling written in C++11, bringing Go-style concurrency to C++. It also provide… | 23 | 3311 | maintenance |
| greg7mdp/parallel-hashmap A family of header-only C++ hash map/set and btree containers that serve as fast, memory-friendly drop-in replacements for std::unordered_m… | 72 | 3220 | maintenance |
| Peek Peek is a Rails profiling tool, originally built at GitHub, that overlays a performance bar on your application showing request metrics lik… | 23 | 3173 | maintenance |
| Optick Optick is a lightweight C++ profiler designed for games, offering instrumentation, context-switch tracking, sampling, and GPU counters. It … | 23 | 3162 | maintenance |
| hyj1991/easy-monitor Easy-Monitor 3.0 is an enterprise-grade Node.js application performance monitoring and online failure diagnosis solution, split across mult… | 32 | 3127 | maintenance |
| Netflix/flamescope FlameScope is a visualization tool for exploring Linux perf profile data as interactive heat maps and time-range-filtered flame graphs. It … | 32 | 3121 | maintenance |
| GoogleChromeLabs/psi A Node.js library and CLI wrapper around Google's PageSpeed Insights v5 API that runs mobile and desktop performance tests on deployed site… | 10 | 3100 | maintenance |
| nemasu/asmttpd A small, multi-threaded HTTP web server for 64-bit Linux written entirely in amd64 assembly with no external library dependencies. It serve… | 23 | 3099 | maintenance |
| zesterer/flume Flume is a Rust library providing a safe, fast multi-producer, multi-consumer (MPMC) channel for passing messages between threads. It is a … | 72 | 3077 | maintenance |
| weld-project/weld Weld is a language and high-performance runtime that optimizes data-intensive analytics workflows by expressing computations in a common in… | 54 | 3008 | maintenance |
| Minify Minify is a PHP-based HTTP server that combines, minifies, and serves CSS and JavaScript assets with appropriate caching headers like condi… | 57 | 2993 | maintenance |
| google/breakpad Google Breakpad is a set of client and server components implementing a crash-reporting system for native applications. It captures minidum… | 76 | 2904 | maintenance |
| aappleby/smhasher SMHasher is a C++ test suite that evaluates the distribution, collision, and performance properties of non-cryptographic hash functions. It… | 69 | 2892 | maintenance |
| apitrace/apitrace apitrace is a set of tools for tracing OpenGL, OpenGL ES, Direct3D, and DirectDraw API calls to a file, then replaying and inspecting them.… | 76 | 2867 | maintenance |
| siddharthkp/cost-of-modules A CLI tool that analyzes your npm/yarn dependencies and reports which packages take the most disk space and slow down installation. It help… | 32 | 2854 | maintenance |
| EZLippi/WebBench WebBench is a very simple website stress-testing tool for Linux, originally written by Radim Kolar in 1997. It uses fork() to simulate mult… | 32 | 2792 | maintenance |
| johnil/VVeboTableViewDemo A demo extracted from the VVebo iOS app showing techniques for smooth UITableView scrolling, including asynchronous rendering of cell conte… | 32 | 2782 | maintenance |
| khizmax/libcds libcds is a C++11 library of concurrent, lock-free and fine-grained lock-based data structures such as stacks, queues, maps, and skip-lists… | 23 | 2743 | maintenance |
| mzgoddard/hard-source-webpack-plugin HardSourceWebpackPlugin is a webpack plugin that provides an intermediate hard (disk-based) caching step for modules, making subsequent bui… | 60 | 2724 | maintenance |
| pod4g/hiper Hiper is a Node.js CLI tool that loads a web page repeatedly in a headless Chrome browser and statistically analyzes PerformanceTiming metr… | 32 | 2721 | maintenance |
| Qihoo360/ArgusAPM ArgusAPM is an open-source Android application performance management (APM) platform from Qihoo 360 that collects UI, network, memory, proc… | 32 | 2685 | maintenance |
| seatgeek/react-infinite A React component library providing an efficient scrolling container that virtualizes long lists by rendering only visible DOM nodes, inspi… | 10 | 2682 | maintenance |
| pocketjoso/penthouse Penthouse is a Node.js library that generates critical path CSS for web pages, extracting the CSS needed to render above-the-fold content f… | 23 | 2679 | maintenance |
| turbo/js turbo.js is a small JavaScript library for GPGPU computing in the browser, letting you run parallel kernels written in GLSL over large Floa… | 10 | 2655 | maintenance |
| exchange-core/exchange-core An ultra-fast order matching engine core for exchanges written in Java, built on LMAX Disruptor, Agrona, Eclipse Collections, and OpenHFT. … | 23 | 2645 | maintenance |
| Kyson/AndroidGodEye AndroidGodEye is an Android application performance monitoring (APM) library that exposes real-time performance metrics viewable in a PC br… | 23 | 2639 | maintenance |
| caiogondim/fast-memoize.js fast-memoize is a JavaScript memoization library that caches function results to speed up repeated calls with the same arguments, supportin… | 23 | 2597 | maintenance |
| phacility/xhprof XHProf is a lightweight function-level hierarchical profiler for PHP, implemented as a C PHP extension with a PHP-based HTML reporting UI. … | 32 | 2595 | maintenance |
| iReaderAndroid/X2C X2C is an Android library that translates XML layouts into equivalent Java code at compile time using APT and JavaPoet, so runtime layout i… | 32 | 2577 | maintenance |
| bnoordhuis/node-heapdump A Node.js native add-on that writes V8 heap snapshots to disk for later inspection in Chrome DevTools. Snapshots can be triggered programma… | 32 | 2545 | maintenance |
| jarulraj/sqlcheck SQLCheck is a command-line tool that automatically detects common SQL anti-patterns in queries and schema definitions. It supports all majo… | 23 | 2523 | maintenance |
| dblalock/bolt Bolt is a C++ library (with a Python wrapper) for lossy compression of dense real-valued vectors that supports mathematical operations dire… | 32 | 2520 | maintenance |
| unslothai/hyperlearn HyperLearn is a Python library providing optimized reimplementations of classical machine learning and statistical algorithms (SVD, eigende… | 32 | 2520 | maintenance |
| cleanbrowsing/dnsperftest A shell script that benchmarks the latency of popular public DNS resolvers (Cloudflare, Google, Quad9, OpenDNS, etc.) from your machine. It… | 32 | 2517 | maintenance |
| lloyd/node-memwatch A native Node.js module for detecting and isolating memory leaks. It emits leak and heap stats events and provides a HeapDiff class to comp… | 32 | 2498 | maintenance |
| zjw-swun/AppMethodOrder An Android library that traces the call order and execution time of all methods in an app without invasive code changes, filtering by packa… | 32 | 2490 | maintenance |
| clauderic/react-tiny-virtual-list A tiny (3kb, zero-dependency) React component for list virtualization that renders only visible items, supporting variable heights/widths, … | 32 | 2482 | maintenance |
| YellowLabTools/YellowLabTools Yellow Lab Tools is a web performance and front-end code quality auditing tool that loads a webpage, collects metrics via Phantomas/Puppete… | 23 | 2461 | maintenance |
| neuecc/ZeroFormatter ZeroFormatter is an extremely fast binary serializer for .NET, .NET Core, and Unity that allows deserialization without parsing by accessin… | 10 | 2424 | maintenance |
| ibireme/YYCache YYCache is a high-performance caching framework for iOS written in Objective-C, providing both in-memory and disk caching with LRU eviction… | 23 | 2390 | maintenance |
| node-cache/node-cache node-cache is a simple, fast in-memory caching module for Node.js with set, get, and delete methods that works like memcached. Keys support… | 23 | 2374 | maintenance |
| alibaba/TProfiler TProfiler is a Java code profiling tool from Alibaba designed to run long-term in production environments. It attaches to a Java 6+ VM to c… | 32 | 2371 | maintenance |
| Tencent/OOMDetector OOMDetector is an iOS memory monitoring component that detects out-of-memory events, monitors large memory allocations, and detects memory … | 23 | 2347 | maintenance |
| bolan9999/react-native-largelist A high-performance large list component for React Native that recycles items by group to minimize CPU and memory usage. It supports cross-p… | 23 | 2344 | maintenance |
| nitin42/react-perf-devtool A browser developer tool extension for inspecting the rendering performance of React components, based on measures collected via the window… | 23 | 2307 | maintenance |
| youtube/spfjs SPF (Structured Page Fragments) is a lightweight JavaScript framework from YouTube for fast navigation and partial page updates. It uses pr… | 10 | 2275 | maintenance |
| audreyt/node-webworker-threads A Node.js native addon (C++) implementing the Web Worker API with real threads, letting CPU-bound tasks run in parallel across cores within… | 32 | 2274 | maintenance |
| kconner/KMCGeigerCounter An iOS library that acts as a framerate meter, playing a Geiger-counter-style click whenever the app drops a frame during animation. It als… | 32 | 2245 | maintenance |
| axstin/rbxfpsunlocker A Windows utility that removes Roblox's 60 FPS cap by modifying running Roblox processes, allowing higher framerates on capable hardware. I… | 10 | 2224 | maintenance |
| madMAx43v3r/chia-plotter A high-performance, pipelined multi-threaded Chia plotter written in C that creates proof-of-space plot files for the Chia blockchain. It u… | 32 | 2208 | maintenance |
| marcelduran/yslow YSlow analyzes web pages and grades their performance against Yahoo's rules for high performance web pages. It ships as browser extensions,… | 32 | 2201 | maintenance |
| Tencent/Hardcoder Tencent's Hardcoder is a framework that lets Android apps communicate directly with the Android system over a socket to request hardware re… | 23 | 2198 | maintenance |
| TerarkDB TerarkDB is a RocksDB-compatible embedded key-value storage engine forked from RocksDB v5.18.3, offering improved tail latency, throughput,… | 61 | 2159 | maintenance |
| mtcp-stack/mtcp mTCP is a highly scalable user-level TCP stack for multicore systems, implemented in C with kernel-bypass packet I/O via DPDK, netmap, or P… | 23 | 2138 | maintenance |
| snooda/net-speeder net-speeder is a C-based Linux tool that speeds up single-threaded downloads on high-latency, unstable network links by duplicating outgoin… | 32 | 2137 | maintenance |
| smallnest/go-web-framework-benchmark A benchmark suite comparing the full HTTP request processing performance of dozens of Go web frameworks, including gin, echo, fiber, beego,… | 70 | 2134 | maintenance |
| leeoniya/dropcss DropCSS is a tiny (~10 KB), exceptionally fast Node.js library that removes unused CSS by taking HTML and CSS as input and returning only t… | 23 | 2125 | maintenance |
| naver/ngrinder nGrinder is an enterprise-level performance and stress testing platform consisting of a web-based controller and load-generating agents. It… | 10 | 2101 | maintenance |
| paulirish/memory-stats.js A minimal JavaScript library that displays a live JS heap size monitor overlay in the browser, similar to stats.js but for memory. It reads… | 32 | 2089 | maintenance |
| miloyip/nativejson-benchmark A benchmark suite evaluating the conformance and performance (speed, memory, code size) of 41 open-source C/C++ JSON parsing and generation… | 23 | 2074 | maintenance |
| skiplang/skip Skip is a statically typed, ahead-of-time compiled general-purpose programming language that tracks side effects to enable safe memoization… | 32 | 2022 | maintenance |
| wilk/microjob Microjob is a tiny TypeScript library that wraps Node.js worker_threads into a simple promise-based API for running CPU-bound work in backg… | 23 | 2006 | maintenance |
| google/butteraugli Butteraugli is a C++ library and command-line tool that estimates the psychovisual difference between two images, producing both a scalar s… | 10 | 1999 | maintenance |
| mtrebi/memory-allocators A C++ library implementing several custom memory allocators (linear, stack, pool, and free list) as faster alternatives to malloc/free. It … | 75 | 1994 | maintenance |
| catapult-project/catapult Catapult is a collection of performance tools from the Chromium project for gathering, displaying, and analyzing performance data, includin… | 10 | 1965 | maintenance |
| alibaba/alpha Alpha is an Android library for orchestrating asynchronous app startup tasks using a PERT-style dependency graph. Developers define tasks a… | 10 | 1947 | maintenance |
| omnilib/aiomultiprocess A Python library that combines AsyncIO and multiprocessing, running a full event loop in each child process to maximize concurrency. It mim… | 32 | 1925 | maintenance |
| GoogleChromeLabs/prerender-loader A Webpack loader that performs build-time prerendering of client-side applications, producing static HTML instead of an empty bootstrapping… | 10 | 1901 | maintenance |
| jayden320/LinkMap A macOS GUI tool that parses Xcode LinkMap files to report how much binary space each class or static library occupies (code plus data segm… | 32 | 1893 | maintenance |
| RevillWeb/img-2 Img2 is a web component library that replaces standard <img> elements with an <img-2> custom element to pre-cache images off the main threa… | 32 | 1878 | maintenance |
| wojteklu/Watchdog Watchdog is a small Swift library that monitors the main thread and logs when it is blocked longer than a configurable threshold. It suppor… | 32 | 1872 | maintenance |
| google/gemmlowp gemmlowp is a small, self-contained, headers-only C++ library for low-precision (quantized) general matrix multiplication (GEMM). It provid… | 32 | 1846 | maintenance |
| cmuratori/meow_hash Meow Hash is an extremely fast non-cryptographic hash function taking a 128-byte seed and producing 128-bit output, implemented in C/C++ us… | 32 | 1833 | maintenance |
| libquic libquic is a standalone C++ library packaging Chromium's QUIC implementation with minimal dependencies (only embedded BoringSSL), built via… | 23 | 1833 | maintenance |
| cmuratori/refterm refterm is a reference renderer for monospace terminal displays written in C, demonstrating that sensible design achieves reasonable frame … | 23 | 1832 | maintenance |