103.2k
Llama.cpp
Efficient LLM inference in C/C++ for high-performance computing applications.
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Best Open-Source Performance Tools in 2026
Performance listings cover analytics databases, in-memory stores, and bundle analysis. ClickHouse handles real-time analytics at large volume; DuckDB runs analytical SQL in-process; Dragonfly is an in-memory data store positioned as a Redis and Memcached replacement. Rollup Plugin Visualizer and React Native Bundle Visualizer help you see what is driving bundle size.
The most popular open-source Performance tool by GitHub stars is Llama.cpp(103.2k stars), followed by Netdata(78.4k stars)and Elasticsearch(76.5k stars). This page lists the top 30 of 57 performance tools in the directory, ranked by community adoption.
Quick comparison
| # | Tool | Stars | Language | License |
|---|---|---|---|---|
| 1 | Llama.cpp Efficient LLM inference in C/C++ for high-performance computing applications. | 103.2k | C++ | MIT License |
| 2 | Netdata An advanced monitoring software providing real-time performance and health monitoring for your infrastructure. | 78.4k | C | GNU General Public License v3.0 |
| 3 | Elasticsearch Free and Open Source, Distributed, RESTful Search Engine for advanced searching and data analytics. | 76.5k | Java | Other |
| 4 | Awesome Scalability A curated list of principles, patterns, and practices for designing scalable, reliable, and high-performance large-scale systems. | 70.3k | — | MIT License |
| 5 | Webpack A versatile bundler for JavaScript and its friends, facilitating the bundling of modules into a few assets. Supports code splitting for on-demand loading and features loaders for handling various module formats like CommonJs, AMD, ES6, CSS, images, and more. | 65.8k | JavaScript | MIT License |
| 6 | Traefik A powerful Cloud Native Application Proxy designed for ease of use and automation. It seamlessly integrates with your infrastructure components and configures itself automatically and dynamically. | 62.7k | Go | MIT License |
| 7 | Gatsby The best React-based framework with performance, scalability, and security built in, perfect for building fast and modern websites. | 56.0k | JavaScript | MIT License |
| 8 | Sentry Developer-first error tracking and performance monitoring to help you improve your software applications' reliability and speed. | 43.6k | Python | Other |
| 9 | PM2 Node.js Production Process Manager with a built-in Load Balancer for managing and keeping applications online. | 42.0k | JavaScript | Other |
| 10 | ColossalAI A tool to make large AI models cheaper, faster, and more accessible by optimizing distributed AI workloads. | 40.6k | Python | Apache License 2.0 |
All 30 Performance tools
- 78.4k
Netdata
An advanced monitoring software providing real-time performance and health monitoring for your infrastructure.
🔎 Monitoring⚙️ DevOps🏎️ Performance - 76.5k
Elasticsearch
Free and Open Source, Distributed, RESTful Search Engine for advanced searching and data analytics.
👨💻 Development🏎️ Performance🛠️ Tools - 70.3k
Awesome Scalability
A curated list of principles, patterns, and practices for designing scalable, reliable, and high-performance large-scale systems.
🕶️ Awesome💡 Best Practices🏎️ Performance🏗️ Architecture - 65.8k
Webpack
A versatile bundler for JavaScript and its friends, facilitating the bundling of modules into a few assets. Supports code splitting for on-demand loading and features loaders for handling various module formats like CommonJs, AMD, ES6, CSS, images, and more.
👨💻 Development🟡 JavaScript🛠️ Tools🏎️ Performance - 62.7k
Traefik
A powerful Cloud Native Application Proxy designed for ease of use and automation. It seamlessly integrates with your infrastructure components and configures itself automatically and dynamically.
⚙️ DevOps🔁 API🔎 Monitoring🏎️ Performance - 56.0k
Gatsby
The best React-based framework with performance, scalability, and security built in, perfect for building fast and modern websites.
🧰 Framework🌐 Web⚛️ React🏎️ Performance - 43.6k
Sentry
Developer-first error tracking and performance monitoring to help you improve your software applications' reliability and speed.
🔎 Monitoring🏎️ Performance👨💻 Development⚙️ DevOps - 42.0k
PM2
Node.js Production Process Manager with a built-in Load Balancer for managing and keeping applications online.
👨💻 Development💚 Node.js⚙️ DevOps🏎️ Performance - 40.6k
ColossalAI
A tool to make large AI models cheaper, faster, and more accessible by optimizing distributed AI workloads.
🤖 AI👨💻 Development🏎️ Performance - 39.5k
ClickHouse
ClickHouse® is a high-performance real-time analytics database management system designed for handling large volumes of data at incredible speed.
💾 Database📊 Analytics🏎️ Performance🔬 Data Science - 37.5k
V
A simple, fast, and safe compiled language designed for developing maintainable software with zero library dependencies, featuring automatic C to V translation.
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- 37.4k
Duckdb
DuckDB is an analytical in-process SQL database management system that offers fast and efficient query processing for analytical workloads.
💾 Database👨💻 Development📊 Analytics🏎️ Performance - 30.3k
Dragonfly
Dragonfly is a modern data store designed as a high-performance, in-memory replacement for Redis and Memcached, offering superior scalability and enhanced features.
💾 Database🏎️ Performance⚙️ DevOps🛠️ Tools - 30.3k
K6
A modern load testing tool designed for developers and testers to measure performance and detect issues, utilizing Go and JavaScript.
🧪 Testing🏎️ Performance⚙️ DevOps🟡 JavaScript - 29.5k
React-boilerplate
🔥 A highly scalable, offline-first foundation with the best developer experience and a focus on performance and best practices.
👨💻 Development🟡 JavaScript⚛️ React🏎️ Performance - 27.8k
Hyperfine
A command-line benchmarking tool designed for testing the performance and efficiency of scripts and commands.
⌨️ CLI🏎️ Performance👨💻 Development - 23.6k
TDengine
A high-performance, scalable time-series database designed for Industrial IoT (IIoT) scenarios, offering optimized handling of massive data influx and complex queries.
💾 Database🏎️ Performance - 23.6k
Simdjson
simdjson is a high-performance JSON parser capable of parsing gigabytes of JSON per second. It is utilized by major projects such as Facebook/Meta Velox, the Node.js runtime, ClickHouse, WatermelonDB, Apache Doris, Milvus, and StarRocks.
👨💻 Development🔨 Utils🏎️ Performance - 23.4k
Dub
Dub is an open-source link attribution platform loved by modern marketing teams like Twilio, Perplexity, Vercel, and Huberman Labs. It provides comprehensive tools to track, attribute, and optimize marketing links effectively.
📊 Analytics🛠️ Tools🔁 API🏎️ Performance - 22.8k
Saleor
Saleor Core: the high performance, composable, headless commerce API designed for modern e-commerce solutions.
🛍️ E-Commerce🔁 API⚙️ DevOps🏎️ Performance - 22.6k
Squoosh
Squoosh is an image compression web app that reduces image sizes using best-in-class codecs directly in the browser.
🌐 Web🛠️ Tools🏎️ Performance🌐 Web - 22.4k
TimescaleDB
A high-performance time-series database designed for real-time analytics, packaged as a PostgreSQL extension.
💾 Database📊 Analytics🏎️ Performance👨💻 Development - 21.8k
Nautilus_trader
A high-performance algorithmic trading platform and event-driven backtester designed for quantitative and systematic trading research, strategy development, and fast execution.
👨💻 Development🐍 Python🏎️ Performance🛠️ Tools - 21.2k
Sonic
Sonic is a fast, lightweight, and schema-less search backend. It serves as an alternative to Elasticsearch, designed to run on minimal resources, making it ideal for applications with limited memory availability. Sonic offers an efficient search and indexing mechanism at high speed while being easy to integrate.
👨💻 Development⚙️ DevOps🏎️ Performance💾 Database - 21.0k
Dgraph
Dgraph is a high-performance graph database designed for real-time use cases, offering horizontal scalability and native GraphQL support.
💾 Database🏎️ Performance🔁 API - 20.9k
Signoz
SigNoz is an open-source observability platform native to OpenTelemetry, providing logs, traces, and metrics in a single application. It serves as an open-source alternative to DataDog, NewRelic, and others, offering comprehensive Application Performance Monitoring (APM) and Observability features.
🔎 Monitoring🏎️ Performance⚙️ DevOps🛠️ Tools - 18.7k
Unocss
The instant on-demand atomic CSS engine for ultra-fast development and styling.
👨💻 Development🎨 Styling🏎️ Performance🛠️ Tools - 18.7k
SpacetimeDB
SpacetimeDB is a high-performance multiplayer database designed for real-time game and application development, enabling low-latency synchronization and seamless state sharing between clients.
💾 Database🎮 Game Development🏎️ Performance👨💻 Development - 18.5k
OpenObserve
A highly efficient and cost-effective alternative to Elasticsearch, Splunk, and Datadog, designed for handling logs, metrics, traces, Real User Monitoring, error tracking, and session replay at a petabyte scale.
📊 Analytics🔎 Monitoring⚙️ DevOps🏎️ Performance
Frequently asked questions
What is the best open-source performance tool in 2026?
Llama.cpp leads by GitHub stars(103.2k). Efficient LLM inference in C/C++ for high-performance computing applications.
Are these performance tools free?
Yes. Every tool on this list is open source and free to use in your own projects. Many can be self-hosted.
How is this list ranked?
Tools are ranked by GitHub star count, a strong proxy for community adoption and active maintenance. Star counts are refreshed regularly.
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