Open Source Developer Tools

A curated collection of the best free and open source software developers use to build software, covering editors, APIs, deployment, version control and everything around them.

OpenCode

An open source AI coding agent for the terminal, with a beta desktop build and installs through every major package manager.

Alternative to:

Cursor

AI coding agent for terminal, IDE, and desktop

Stars
222,458
Forks
29,773
Last commit
15 hours ago

n8n

A fair-code platform for building AI agents and automations on a visual canvas, self-hosted or in the cloud, with more than 1500 integrations.

Alternative to:

Zapier

Visual workflow automation with code flexibility and AI agents

Stars
208,821

Paperclip

A self-hosted control plane that gives teams of AI agents an org chart, budgets, approvals and audit trails from one dashboard.

Alternative to:

Lindy

Org chart, budgets, and governance for AI agent teams

Stars
108,076

pi

A self-extensible terminal coding agent published as TypeScript packages covering the agent runtime, a multi-provider LLM API and a terminal UI.

Alternative to:

GitHub Copilot

Minimal terminal coding agent you can fully customize

Stars
118,357

Orca

Desktop orchestrator that runs several terminal coding agents side by side, each in its own git worktree, tracked in one window.

Alternative to:

Cursor

Run multiple AI coding agents in parallel, side by side

Stars
108,250

Supabase

A Postgres development platform bundling authentication, generated APIs, realtime, storage and vectors, available hosted or entirely self-hosted.

Alternative to:

AWS Amplify

Postgres-powered backend platform for production apps

Stars
114,210

OpenHands

Self-hosted control center for running coding agents and scheduled automations across local, remote and cloud backends.

Alternative to:

OpenAI Codex

Autonomous coding agents that complete real engineering tasks

Stars
92,046

Zed

High-performance multiplayer code editor from the creators of Atom and Tree-sitter, for developers on macOS, Linux and Windows.

Alternative to:

Cursor

High-performance code editor built for speed and AI

Stars
92,312

Neovim

A refactored Vim for developers who want an extensible terminal editor with a scriptable API and modern graphical front ends.

Alternative to:

Sublime Text

Vim fork focused on extensibility and usability

Stars
103,222

Cline

Open source coding agent that works in VS Code, JetBrains IDEs, the terminal and a kanban board, with any model you choose.

Alternative to:

Cursor

Open-source AI coding agent for your editor and terminal

Stars
70,943

Hoppscotch

Browser-based API development platform for building, sending and testing requests across REST, GraphQL, WebSocket and MQTT, solo or with a team.

Alternative to:

Postman

Sleek, intuitive API development and testing platform

Stars
80,701

Coolify

A self-hostable alternative to Heroku and Vercel that deploys applications, databases and services onto servers you already own.

Alternative to:

Vercel

Deploy apps, databases, and services to your own server

Stars
65,089

Warp

An agentic development environment grown out of the terminal, for developers who drive coding agents rather than typing every command.

Alternative to:

Cursor

A modern terminal built around AI coding agents

Stars
65,728

Ghostty

A terminal emulator that refuses the tradeoff between speed, features and native interfaces, with an embeddable library underneath.

Alternative to:

Warp

Fast GPU-accelerated terminal with native UI design

Stars
62,742

PocketBase

An open source backend in a single Go executable, bundling SQLite, realtime subscriptions, auth, file handling and an admin dashboard.

Alternative to:

AWS Amplify

Open-source backend in a single file

Stars
61,626

NocoDB

A no-code interface that turns a relational database into a spreadsheet with grid, kanban, calendar and form views for whole teams.

Alternative to:

Airtable

Transform databases into intuitive spreadsheets instantly

Stars
65,369

Gitea

A lightweight self-hosted Git service in Go, bundling code review, issues, wiki, packages and CI for teams running their own forge.

Alternative to:

Bitbucket

Self-hosted Git service for seamless collaboration

Stars
58,737

Alacritty

A GPU-accelerated terminal emulator for keyboard-driven users who want sensible defaults and leave tabs and splits to a multiplexer.

Alternative to:

Warp

High-performance terminal with GPU acceleration

Stars
66,069

Appwrite

An all-in-one backend and hosting platform that gives web, mobile and AI teams auth, databases, storage, functions and messaging.

Alternative to:

AWS Amplify

Open-source backend platform for rapid app development

Stars
57,781

Aider

A terminal AI pair programmer that edits your local codebase, runs your linters and tests, and commits each change as it goes.

Alternative to:

Cursor

AI pair programmer that works inside your terminal

Stars
49,785

T3 Code

A control surface for the coding agents already installed on your machine, reachable from a desktop, web or mobile app.

Alternative to:

Omnara

AI-powered coding made simple and efficient

Stars
30,904

Bruno

An offline API client that stores collections as plain text files in your repository, so Git handles versioning and team sharing.

Alternative to:

Postman

Lightweight, fast, and open-source API client for developers

Stars
47,883

ToolJet

Open source platform for building internal tools, admin panels and dashboards on top of existing databases, APIs and SaaS systems.

Alternative to:

Retool

Build internal tools rapidly without coding

Stars
41,136

Dokploy

Self-hostable platform as a service that deploys applications and databases on your own VPS, with Docker Swarm and Traefik underneath.

Alternative to:

Vercel

Effortless deployment and management for any VPS

Stars
38,083

Gogs

Lightweight self-hosted Git service written in Go, shipping as a single binary that runs comfortably on very modest hardware.

Alternative to:

Bitbucket

Self-hosted Git service that's lightweight and easy to install

Stars
47,904

Continue

Coding agent for VS Code, JetBrains and the terminal, now shipped as a final version and no longer under active development.

Alternative to:

Cursor

Open-source coding agent for your IDE and terminal

Stars
36,350

AppSmith

Low-code platform for building internal tools such as dashboards, admin panels and customer 360 views, then deploying and maintaining them.

Alternative to:

Retool

Empower your team to build custom internal tools rapidly

Stars
41,132

Grok Build

Terminal coding agent that reads a codebase, edits files, runs shell commands and manages long tasks from a full-screen interface.

Alternative to:

Cursor

AI coding agent and CLI for complex terminal workflows

Stars
27,580

Kilo

Open source AI coding agent for VS Code, JetBrains and the terminal, with 500 plus models billed at provider rates.

Alternative to:

Cursor

AI coding agent for VS Code, JetBrains, CLI, and Cloud

Stars
27,769

TipTap

Headless rich text editor for JavaScript applications, letting developers design their own writing interface on top of ProseMirror.

Alternative to:

CKEditor

Craft rich text experiences with ease

Stars
38,881

Refine

React meta-framework for CRUD-heavy applications, giving teams building admin panels, dashboards and internal tools a headless foundation.

Alternative to:

Retool

Build data-rich React apps with ease and flexibility

Stars
35,954

Tabby

Self-hosted AI coding assistant that runs on consumer GPUs, an on-premises alternative for teams that cannot send code to a cloud.

Alternative to:

Cursor

AI-powered code completion for seamless development

Stars
33,927

Insomnia

Cross-platform API client for REST, GraphQL, gRPC and WebSockets, for developers who want to design, test and mock in one app.

Alternative to:

Postman

Powerful API development and testing made effortless

Stars
40,091

Directus

A backend that wraps any SQL database with instant REST and GraphQL APIs plus a visual studio for non-technical teammates.

Alternative to:

Contentful

Open-source data platform for effortless content management

Stars
38,668

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Open Source Developer Tools

A curated collection of the best free and open source software developers use to build software, covering editors, APIs, deployment, version control and everything around them.

OpenCode

n8n

Paperclip

pi

Orca

Supabase

OpenHands

Zed

Neovim

Cline

Hoppscotch

Coolify

Warp

Ghostty

PocketBase

NocoDB

Gitea

Alacritty

Appwrite

Aider

T3 Code

Bruno

ToolJet

Dokploy

Gogs

Continue

AppSmith

Grok Build

Kilo

TipTap

Refine

Tabby

Insomnia

Directus

OpenCode

n8n

Paperclip

pi

Orca

Supabase

OpenHands

Zed

Neovim

Cline

Hoppscotch

Coolify

Warp

Ghostty

PocketBase

NocoDB

Gitea

Alacritty

Appwrite

Aider

T3 Code

Bruno

ToolJet

Dokploy

Gogs

Continue

AppSmith

Grok Build

Kilo

TipTap

Refine

Tabby

Insomnia

Directus

Langflow