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Find the best open-source alternatives

Discover community-driven replacements for popular proprietary software.

Popular searchesPostmanEvernoteInsomniaApache Kafka

Popular products

Most searched proprietary tools with open-source replacements

Hoppscotch
Postman21 alts

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

TypeScript79.0k
joplin
Evernote15 alts

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

TypeScript54.5k
Hoppscotch
Insomnia13 alts

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

TypeScript79.0k
RocketMQ
Apache Kafka13 alts

A distributed cloud-native messaging and streaming platform for building event-driven applications with high performance and reliability.

Java22.4k

Browse all

Showing 1,435 products with open-source alternatives

PopularRecently addedA–Z
Sequel Pro
MySQL Workbench1 alts

A fast, easy-to-use macOS application for managing MySQL and MariaDB databases.

Objective-C9.2k
Kanidm
FreeIPA1 alts

A simple, secure, and fast identity management platform for self-hosted authentication, supporting OAuth2, LDAP, RADIUS, and Unix integration.

Rust4.9k
Brave Browser
Mozilla Firefox1 alts

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

22.3k
PDF.js
Adobe Reader1 alts

A general-purpose, web standards-based PDF viewer built with HTML5 and JavaScript.

JavaScript53.2k
tracemachina/nativelink
Reclient1 alts

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

Rust1.5k
Ludusavi
GameSave Manager1 alts

A cross-platform backup tool for PC video game save data, supporting over 19,000 games and multiple game stores.

Rust5.4k
Async++
Microsoft PPL1 alts

A lightweight concurrency framework for C++11 inspired by Microsoft PPL, providing tasks, parallel algorithms, and schedulers.

C++1.4k
ex_machina
Factory Bot1 alts

A flexible library for creating test data and associations in Elixir applications, with seamless Ecto integration.

Elixir2.0k
osrm-backend
HERE Routing API1 alts

A high-performance routing engine written in C++ that provides route, trip, and navigation services using OpenStreetMap data.

C++7.7k
go-rpio
WiringPi1 alts

A pure Go library for accessing Raspberry Pi GPIO pins without external C dependencies.

Go2.3k
pencil
Axure1 alts

An open-source diagramming and GUI prototyping tool built on Electron for creating diagrams and mockups.

JavaScript9.7k
litlyx
PostHog1 alts

A fast, modern, cookie-free analytics tool that can be self-hosted or used via cloud, providing AI-powered dashboards with setup in under 30 seconds.

TypeScript1.7k
Messenger
Official Messenger App1 alts

A native Mac app wrapper for Facebook Messenger that provides a desktop experience.

Objective-C2.8k
ripgrep
hypergrep1 alts

ripgrep is a fast, line-oriented search tool that recursively searches directories for regex patterns while respecting gitignore rules.

Rust62.9k
PicoShare
imgur1 alts

A minimalist, self-hosted web app for sharing files of any size or type with direct download links.

Go2.9k
Plex
Cambria1 alts

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

CSS11.3k
jason
Poison1 alts

A blazing fast JSON parser and generator implemented in pure Elixir.

Elixir1.7k
uv
twine1 alts

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

Rust83.8k
nvim-java
VS Code with Java extensions1 alts

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

Lua1.6k
Stirling-PDF
iLovePDF1 alts

An open-source PDF platform for editing, converting, signing, and automating PDFs with a self-hostable API and desktop app.

TypeScript77.8k
vis
sam1 alts

A vi-like text editor that combines modal editing with Plan 9's structural regular expressions for powerful text manipulation.

C4.5k
FirePad
Etherpad1 alts

An embeddable, collaborative text and code editor that syncs in real-time using Firebase.

JavaScript3.9k
Fury
Apache Avro1 alts

A high-performance multi-language serialization framework using JIT compilation and zero-copy techniques for fast data exchange.

Java4.3k
Widelands
Settlers II1 alts

A free, open-source real-time strategy game inspired by Settlers II, featuring singleplayer campaigns and multiplayer mode.

C++2.7k
Pinpoint
Datadog APM1 alts

An open-source APM tool for monitoring and tracing transactions in large-scale distributed Java, PHP, and Python applications.

Java13.8k
Stagemonitor
Elastic APM1 alts

An open-source Java application performance monitoring agent with preconfigured dashboards for Elasticsearch, Graphite, and InfluxDB.

Java1.7k
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.

TypeScript12.2k
Endless Sky
Star Control1 alts

A free, open-source sandbox space exploration game featuring trading, combat, missions, and an evolving storyline.

C++7.3k
BetterSegmentedControl
UISwitch1 alts

A customizable Swift replacement for UISegmentedControl and UISwitch with extensive styling options.

Swift2.4k
fat-free-crm
Salesforce1 alts

An open-source Ruby on Rails CRM platform for managing leads, contacts, opportunities, and campaigns with group collaboration.

Ruby3.6k
Sure
Maybe Finance1 alts

A community-maintained, self-hostable personal finance and wealth management app for tracking and managing your finances.

Ruby7.8k
slam_toolbox
Cartographer1 alts

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

C++2.4k
Warpgate
Teleport1 alts

A transparent SSH, HTTPS, Kubernetes, MySQL, and PostgreSQL bastion host with built-in session recording and no client-side software required.

Rust6.8k
OpenTTD
Transport Tycoon Deluxe1 alts

An open-source transport simulation game based on Transport Tycoon Deluxe, featuring expanded gameplay and multiplayer support.

C++7.8k
httpx
requests1 alts

A next-generation HTTP client for Python with HTTP/1.1 and HTTP/2 support, async/await APIs, and a command-line interface.

Python15.2k
lemmy
Reddit1 alts

A self-hostable, decentralized link aggregator and forum for the fediverse, similar to Reddit.

Rust14.4k
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