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Find the best open-source alternatives

Discover community-driven replacements for popular proprietary software.

Popular searchesPostmanWordPressEvernoteNumPy

Popular products

Most searched proprietary tools with open-source replacements

Hoppscotch
Postman31 alts

An open-source API development ecosystem for testing HTTP, WebSocket, GraphQL, and other APIs with real-time collaboration.

TypeScript80.2k
Official examples
WordPress22 alts

An open-source, fullstack Next.js framework that provides a TypeScript backend and admin panel, usable as a headless CMS or for building applications.

TypeScript44.6k
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Evernote21 alts

A privacy-focused, open-source note-taking app with end-to-end encrypted sync across all major platforms.

TypeScript56.3k
stdlib
NumPy20 alts

A standard library for JavaScript and TypeScript with an emphasis on numerical and scientific computation.

JavaScript6.0k

Browse all

Showing 2,872 products with open-source alternatives

PopularRecently addedA–Z
SPQR
Apache Spark Streaming1 alts

A dynamic framework for processing high-volume data streams with subsecond pipeline instantiation and modification latency.

Java30
slam_toolbox
Cartographer1 alts

A ROS-based 2D SLAM library for lifelong mapping, localization, and multi-robot SLAM with pose-graph optimization.

C++2.6k
Nantes
TTTAttributedLabel1 alts

A pure-Swift UILabel replacement with support for attributes, data detectors, and link embedding.

Swift1.1k
loguru
GLOG1 alts

A lightweight, fast, and flexible C++ logging library with minimal dependencies and easy integration.

C++1.9k
FinGPT
BloombergGPT1 alts

An open-source framework for financial large language models, enabling cost-effective fine-tuning for tasks like sentiment analysis and forecasting.

Jupyter Notebook21.2k
javactrl-kafka
Temporal.io1 alts

A minimalistic workflow engine for JVM that defines workflows as Java functions and runs them as Apache Kafka Streams processors.

Java18
LINQ to DB
LINQ to SQL1 alts

A fast, type-safe LINQ database access library that sits between micro-ORMs and full ORMs, offering SQL-like control with LINQ expressions.

C#3.3k
GLIntercept
APITrace1 alts

A Windows OpenGL function call interceptor that logs all OpenGL calls for debugging and analysis.

C++553
IBM Cloud CLI Release
Google Cloud SDK1 alts

The official command-line interface for managing IBM Cloud resources and services.

159
Maddy
Dovecot1 alts

A composable, all-in-one mail server that implements SMTP, IMAP, DKIM, SPF, DMARC, and more in a single daemon.

Go6.1k
SUPER
Qark1 alts

A secure, extensible command-line Android APK vulnerability analyzer written in Rust for automated security testing.

Rust428
Imager
kraken.io1 alts

Automated image compression tool that competitively optimizes noisy, high-resolution images into tiny files for web distribution.

Rust729
PeaZip
WinZip1 alts

A free, open-source, cross-platform archive manager and file utility supporting 200+ archive formats.

Pascal7.8k
Butterfly Server .NET
FeatherJS1 alts

A C# backend framework for building real-time single-page applications with RESTlike APIs, subscriptions, and reactive database support.

C#273
Den
E2B1 alts

A self-hosted sandbox runtime that provides secure, isolated environments for AI agents to execute code.

Go15
magenta.nvim
Windsurf1 alts

A Neovim plugin for AI-assisted coding with transparent tool use, sub-agents, and OS-level sandboxing, focused on the Anthropic Claude models.

TypeScript462
VitePress
VuePress1 alts

A Vue-powered static site generator built on Vite for fast, modern documentation and content sites.

TypeScript18.2k
remote-ssh.nvim
Visual Studio Code Remote - SSH1 alts

A Neovim plugin that enables remote file editing with full LSP and TreeSitter support by running language servers on remote machines while keeping editing local.

Lua131
eta
Nunjucks1 alts

A lightweight, fast embedded JavaScript template engine for Node.js, Deno, and the browser, written in TypeScript.

TypeScript1.8k
Open Live Writer
Windows Live Writer1 alts

An open-source desktop application for writing, previewing, and publishing blog posts to various platforms.

C#2.5k
GLIntercept
BuGLe1 alts

A Windows OpenGL function call interceptor that logs all OpenGL calls for debugging and analysis.

C++553
AcceptanceMark
Fitnesse1 alts

Generates strongly-typed XCTest cases from markdown tables for Fitnesse-style acceptance testing in Xcode.

Swift64
snipmate
TextMate1 alts

A Vim plugin that provides TextMate-style snippet expansion for faster coding.

Vim Script2.0k
peco
percol1 alts

A simplistic interactive filtering tool for the command line, written in Go, that filters and selects from piped input.

Go7.9k
PowerShell implementation of Autoruns
Autoruns (Sysinternals)1 alts

A PowerShell module for live incident response that enumerates Windows autorun artifacts to detect persistence mechanisms used by malware and legitimate programs.

PowerShell303
Scorched
Padrino1 alts

A lightweight, DRY, unopinionated web framework for Ruby that provides powerful constructs for building websites and applications of any scale.

Ruby275
edgartools
sec-api1 alts

A Python library that provides structured access to SEC EDGAR filings, including financial statements, insider trades, and fund holdings.

Python2.6k
Typst
LaTeX1 alts

A markup-based typesetting system designed to be as powerful as LaTeX while being easier to learn and use.

Rust55.7k
samza-luwak
Elasticsearch Percolator1 alts

An experimental integration of Apache Samza and Luwak for scalable real-time document matching against large query sets.

Java100
zigbee2mqtt
IKEA Tradfri Gateway1 alts

An open-source Zigbee to MQTT bridge that lets you control Zigbee devices without proprietary vendor gateways.

TypeScript15.6k
SwiftAutoGUI
PyAutoGUI1 alts

A Swift library for macOS automation with mouse, keyboard control, screenshots, image recognition, and AI-powered agents.

Swift92
PikaPython
MicroPython1 alts

An ultra-lightweight Python interpreter for microcontrollers, requiring only 4KB of RAM and zero dependencies.

C1.7k
Enduro/X
Jboss Blacktie (Narayan)1 alts

An open-source middleware platform for building high-performance, distributed transaction processing applications in C/C++ and other languages.

C140
notifuse
Listmonk1 alts

An open-source, self-hosted emailing platform for sending newsletters and transactional emails with enterprise-grade features.

Go2.1k
ag-charts
Chart.js Enterprise1 alts

A fully-featured, highly customizable JavaScript charting library for enterprise applications.

TypeScript480
Insta Snap
Snapchat1 alts

A React Native image sharing app with Instagram and Snapchat-like features including camera, video, and feed functionality.

JavaScript111
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