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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
codecompanion.nvim
Zed AI1 alts

A Neovim plugin that integrates LLMs and AI agents for coding assistance, chat, and inline transformations.

Lua6.5k
blink.cmp
nvim-cmp1 alts

A performant, batteries-included completion plugin for Neovim with LSP, snippet, and fuzzy matching support.

Lua6.2k
LocalAI
ElevenLabs API1 alts

An open-source AI engine that runs LLMs, vision, voice, and image/video models on any hardware with drop-in OpenAI API compatibility.

Go45.8k
boom
ab1 alts

A modern HTTP(S) load generator and ApacheBench replacement written in Go for performance testing.

Go4.7k
Needle
Cleanse1 alts

A compile-time safe Swift dependency injection framework that uses code generation to ensure reliability.

Swift2.0k
caprover
Microsoft Azure1 alts

An easy-to-use, self-hosted PaaS platform that automates Docker, nginx, and SSL for deploying web apps and databases.

TypeScript15.0k
Airbyte (k)
Fivetran1 alts

Open-source data integration platform for building ELT pipelines from APIs, databases, and files to data warehouses, lakes, and lakehouses.

Python21.1k
artcraft
Adobe Photoshop1 alts

An IDE for interactive AI image and video creation, turning prompting into intentional crafting for artists and filmmakers.

Rust1.6k
Lost Pixel
Applitools1 alts

An open-source visual regression testing tool for Storybook, Ladle, Histoire, and modern frontend applications.

TypeScript1.7k
RQLite
etcd1 alts

A lightweight, fault-tolerant distributed relational database built on SQLite, designed for high availability with minimal operational effort.

Go17.4k
bpftrace
DTrace1 alts

A high-level tracing language for Linux that leverages eBPF for efficient system and application observability.

C++10.1k
Nomad UI
Kubernetes1 alts

A simple, flexible, and performant workload orchestrator for deploying containers, VMs, and legacy applications across on-prem and cloud infrastructure.

Go16.4k
ruff
Flake81 alts

An extremely fast Python linter and code formatter written in Rust, offering drop-in replacements for tools like Flake8 and Black.

Rust47.2k
Symfony Encore
Laravel Mix1 alts

A simple and powerful API for processing and compiling assets using Webpack, designed for Symfony but usable anywhere.

JavaScript2.2k
react-big-calendar
Full Calendar1 alts

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

JavaScript8.7k
IVRE
Censys1 alts

A self-hosted network reconnaissance framework for building alternatives to Shodan, ZoomEye, Censys, and GreyNoise.

Python4.0k
Airbyte (k)
Stitch Data1 alts

Open-source data integration platform for building ELT pipelines from APIs, databases, and files to data warehouses, lakes, and lakehouses.

Python21.1k
Maputnik
Mapbox Studio1 alts

A free and open visual editor for designing and customizing MapLibre GL map styles.

TypeScript2.5k
EasyTier
ZeroTier1 alts

A simple, decentralized mesh VPN with WireGuard support, built for secure peer-to-peer networking.

Rust11.0k
MCP Memory Service
Mem01 alts

Open-source persistent memory backend for AI agent pipelines with REST API, knowledge graph, and autonomous consolidation.

Python1.7k
umo editor
Microsoft Word1 alts

An open-source Vue3 document editor with Microsoft Word-like pagination, rich text editing, and AI-assisted creation.

Vue1.5k
LibrePCB
KiCad1 alts

A free, cross-platform Electronic Design Automation (EDA) suite for designing printed circuit boards.

C++2.9k
Yamtrack
AniList1 alts

A self-hosted media tracker for movies, TV shows, anime, manga, video games, books, comics, and board games.

Python2.6k
php-pm
PHP-FPM1 alts

A process manager, supercharger, and load balancer for modern PHP applications that boosts performance by keeping workers in memory.

PHP6.6k
gdu
dust1 alts

A fast, parallel disk usage analyzer with an interactive console interface written in Go.

Go5.6k
react-grid-layout
Packery1 alts

A draggable and resizable responsive grid layout system for React applications.

TypeScript22.2k
asterinas
Linux1 alts

Asterinas is a production-grade, memory-safe Linux alternative built from the ground up in Rust with a modern framekernel architecture.

Rust4.4k
pgmq
RSMQ1 alts

A lightweight message queue built on PostgreSQL, offering SQS-like functionality with transactional guarantees.

PLpgSQL4.8k
ruff
pyupgrade1 alts

An extremely fast Python linter and code formatter written in Rust, offering drop-in replacements for tools like Flake8 and Black.

Rust47.2k
Paseto
JWT1 alts

A secure, modern alternative to JWT for creating and verifying platform-agnostic security tokens.

PHP3.4k
Owncast
Twitch1 alts

An open source, self-hosted live video streaming and chat server for complete ownership of your live streams.

Go11.2k
Captura
Camtasia1 alts

A Windows desktop application for capturing screenshots, screen recordings, webcam, audio, mouse clicks, and keystrokes.

C#10.7k
Attendize
TicketTailor1 alts

An open-source ticket selling and event management platform built on Laravel, enabling organizers to avoid third-party fees.

PHP4.2k
ArchiSteamFarm
Idle Master1 alts

A C# application for farming Steam trading cards from multiple accounts simultaneously without requiring the Steam client.

C#13.2k
kala
Chronos1 alts

A modern, performant job scheduler written in Go with a JSON over HTTP API and web UI.

Go2.2k
jsblocks
Knockout.js1 alts

A 2012-era MV-ish UI framework for building user interfaces and single-page applications with server-side rendering.

JavaScript2.8k
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