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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
joplin
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
Plex
STIX1 alts

IBM's open-source corporate typeface family, designed for global use and versatility across UI and print.

CSS11.6k
python-docx
VBA for Word1 alts

A Python library for reading, creating, and updating Microsoft Word (.docx) files.

Python5.7k
tsink
VictoriaMetrics1 alts

A lightweight time-series database written in Rust, deployable as an embedded library, standalone server, or scalable cluster.

Rust323
bottom
gtop1 alts

A customizable cross-platform graphical process and system monitor for the terminal.

Rust13.9k
Seam-aware Decimater
MeshLab1 alts

Mesh simplification library that preserves UV seam boundaries for seamless texture reuse across decimation levels.

C++530
Slate
ShiftIt1 alts

A highly configurable window management application for macOS that replaces Divvy and SizeUp with keyboard-driven window control.

Objective-C7.8k
react-big-calendar
Full Calendar1 alts

A flexible React calendar component for displaying events, inspired by Google Calendar and Outlook.

JavaScript8.7k
Coraza
ModSecurity1 alts

An open-source, enterprise-grade Web Application Firewall library written in Go, compatible with ModSecurity SecLang rulesets.

Go3.8k
Spotifyd
Spotify Desktop Client1 alts

A lightweight, open-source Spotify client that runs as a UNIX daemon and supports Spotify Connect.

Rust10.8k
btop
bashtop1 alts

A terminal-based resource monitor for CPU, memory, disks, network, processes, and GPU with a responsive UI and full mouse support.

C++34.3k
RustDesk
TeamViewer1 alts

An open-source remote desktop application designed for self-hosting, as an alternative to TeamViewer.

Rust122.1k
Serpent.AI - Game agent framework: Use any video game as a deep learning sandbox
OpenAI Universe1 alts

A Python framework for creating AI agents that learn to play any video game you own.

Python7.0k
hedwig
Hubot1 alts

An adapter-based chat bot framework for Elixir applications, inspired by Hubot.

Elixir648
uv
pip1 alts

An extremely fast Python package and project manager written in Rust, replacing multiple existing tools.

Rust89.1k
white_bread
Cucumber1 alts

A story BDD tool for Elixir that parses Gherkin feature files and executes them as acceptance tests.

Elixir230
Exoskeleton
Backbone.js1 alts

A faster, leaner Backbone.js alternative for modern HTML5 applications.

JavaScript873
prelude.ts
monet.js1 alts

A TypeScript library providing persistent immutable collections and functional programming constructs like Option, Either, and Future.

TypeScript383
babel-minify
Terser1 alts

An ES6+ aware minifier based on the Babel toolchain, enabling direct minification of modern JavaScript.

JavaScript4.4k
goimports-reviser
goimports1 alts

A Go tool for sorting imports into configurable groups, removing unused imports, setting aliases, and formatting code.

Go717
Microsoft JDK
Amazon Corretto1 alts

Microsoft's production-ready distribution of OpenJDK with long-term support and security updates.

345
sigma
zot1 alts

An OCI-native artifact manager and image registry that is easy to deploy and maintain, supporting Docker, Helm, and other OCI artifacts.

Go180
tracemachina/nativelink
Reclient1 alts

A Nix-powered, high-performance build cache and remote execution server compatible with Bazel, Buck2, and other RE build systems.

Rust1.6k
ILLA Cloud
Retool1 alts

An open-source low-code platform for developers to build internal tools like dashboards, CRUD apps, and admin panels with drag-and-drop components.

TypeScript12.3k
mqtt-scripts
Node-RED1 alts

A Node.js script runner that serves as the logic layer for MQTT-based smart home automation.

JavaScript62
Updater
Appflow1 alts

A Capacitor plugin for instant over-the-air updates of web assets, bypassing app store reviews.

Java833
ASH Viewer
Oracle Enterprise Manager Diagnostic Pack1 alts

A graphical desktop tool for visualizing Active Session History (ASH) data from Oracle and PostgreSQL databases.

Java210
PikaTorrent
WebTorrent Desktop1 alts

A modern, cross-platform torrent client that lets you stream and download content on all your devices.

Dart1.0k
Wombat (.4k)
gRPCurl (GUI alternative)1 alts

A cross-platform desktop GUI client for interacting with gRPC services, supporting all streaming types and automatic proto parsing.

Svelte1.4k
Neuroimaging
Flywheel1 alts

A curated list of software, tools, and resources for exploring, organizing, and analyzing neuroimaging data with a focus on MRI.

Makefile48
Brave Browser
Google Chrome1 alts

A privacy-focused web browser that blocks trackers and ads by default while rewarding users with Basic Attention Tokens.

23.5k
CLERIC
erl_interface1 alts

A Common Lisp implementation of the Erlang distribution protocol for interoperability between Lisp and Erlang nodes.

Common Lisp35
Scapy
p0f1 alts

A Python-based interactive packet manipulation program and library for network analysis, scanning, and security testing.

Python12.5k
FreeSO
The Sims Online1 alts

A full reimplementation of The Sims Online game engine with modern enhancements and support for The Sims 1 via Simitone.

C#972
JNPM
frontend-maven-plugin1 alts

A Java API for interacting with NPM registries to query, download, and package JavaScript dependencies for Java projects.

Java28
nvim-hardline
vim-airline1 alts

A simple, lightweight statusline and bufferline plugin for Neovim written in Lua.

Lua208
nvim-java
VS Code with Java extensions1 alts

A Neovim plugin providing comprehensive Java development support with Spring Boot tools, debugging, testing, and refactoring.

Lua1.7k
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