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Open Source Projects tagged "Developer Tools"

A curated collection of the best open source projects tagged "Developer Tools". Each listing includes a website screenshot along with a detailed review of its features.

Codex CLI

AI
AI coding agent that works inside your terminal

  • Stars

    130,731

  • Last commit

    1 day ago

  • License

    Apache-2.0
Terminal-based AI coding agent that inspects files, edits code, runs commands, and integrates into CI pipelines using OpenAI's Codex models.

Open Source Alternative to:

Claude Code

OpenHands

AI
Autonomous coding agents that complete real engineering tasks

  • Stars

    91,699

  • Last commit

    12 hours ago

  • License

    MIT
AI agent platform that runs autonomous coding agents to plan, write, and ship changes across codebases end-to-end, with support for any model and self-hosted deployment.

Open Source Alternative to:

Claude Code

Neovim

Hyperextensible, Lua-powered Vim-based text editor

  • Stars

    103,142

  • Last commit

    14 hours ago

  • License

    Unknown
A modernized Vim fork with built-in LSP, Lua scripting, Tree-sitter parsing, and an async plugin architecture that works the same across every platform.

Open Source Alternative to:

Cursor

Hoppscotch

Sleek, intuitive API development and testing platform

  • Stars

    80,678

  • Last commit

    1 day ago

  • License

    MIT
Lightweight, fast, and feature-rich API client for developers. Test, debug, and document APIs with ease in a clean, modern interface.

Open Source Alternative to:

Postman

Open Interpreter

AI
Coding agent that runs on local and open-weight models

  • Stars

    68,652

  • Last commit

    14 days ago

  • License

    Apache-2.0
Coding agent that lets LLMs write and execute code, manage files, and control your computer using local or low-cost models.

Open Source Alternative to:

Claude Code

Bruno

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

  • Stars

    47,818

  • Last commit

    1 day ago

  • License

    MIT
A modern, user-friendly API client that simplifies API testing and development with a clean interface and powerful features.

Open Source Alternative to:

Postman

Agno

AI
Model-agnostic platform for building intelligent AI agents

  • Stars

    42,875

  • Last commit

    1 day ago

  • License

    Apache-2.0
Open-source platform that enables developers to create, deploy and monitor AI agents with built-in memory, knowledge integration, and external tool connectivity.

Open Source Alternative to:

Kiro

Continue

AI
Open-source coding agent for your IDE and terminal

  • Stars

    36,307

  • Last commit

    2 days ago

  • License

    Apache-2.0
Runs source-controlled AI checks on every pull request, enforcing your engineering standards as native GitHub status checks with suggested fixes.

Open Source Alternative to:

CodeRabbit

AppSmith

Empower your team to build custom internal tools rapidly

  • Stars

    41,113

  • Last commit

    22 hours ago

  • License

    Apache-2.0
Low-code platform for creating powerful internal tools and dashboards with drag-and-drop ease, robust integrations, and customizable workflows.

Open Source Alternative to:

Make

Qwen Code

AI
Open source AI coding agent for the terminal and IDE

  • Stars

    28,685

  • Last commit

    11 hours ago

  • License

    Apache-2.0
Terminal-based AI coding agent that reads your codebase, edits files and runs commands, with support for Qwen, OpenAI, Anthropic, Gemini and local models.

Open Source Alternative to:

Claude Code

Refine

Build data-rich React apps with ease and flexibility

  • Stars

    35,934

  • Last commit

    1 month ago

  • License

    MIT
A React-based framework for rapid development of internal tools, admin panels, and dashboards with powerful data handling capabilities.

Open Source Alternative to:

Retool

Tabby

AI
AI-powered code completion for seamless development

  • Stars

    33,924

  • Last commit

    4 months ago

  • License

    Apache-2.0
Self-hosted AI coding assistant that enhances productivity with context-aware suggestions and privacy-focused implementation.

Open Source Alternative to:

Codex

Reflex

Full-stack Python platform for web apps and internal tools

  • Stars

    28,974

  • Last commit

    12 hours ago

  • License

    Apache-2.0
Build, iterate, and deploy full-stack web apps entirely in Python. Reflex combines an AI app builder, a full-stack framework, and one-click deployment in one platform.

Open Source Alternative to:

Lovable

Paseo

AI
Run coding agents from your phone, desktop, or terminal

  • Stars

    Stars growing quickly over the last 30 days21,838

  • Last commit

    12 hours ago

  • License

    Apache-2.0
Self-hosted orchestrator for coding agents like Claude Code, Codex, and Cursor, controlled from phone, desktop, web, or CLI.

Open Source Alternative to:

Claude Code

NocoBase

Build custom apps without code, deploy with ease

  • Stars

    24,686

  • Last commit

    11 hours ago

  • License

    Unknown
Open-source no-code platform for creating tailored business applications quickly, with full customization and easy deployment options.

Open Source Alternative to:

Airtable

SWE-agent

AI
AI agents that autonomously fix code and resolve GitHub issues

  • Stars

    20,629

  • Last commit

    5 days ago

  • License

    MIT
State-of-the-art AI agent that uses language models like GPT-4o to autonomously solve GitHub issues, fix bugs, and implement features with configurable YAML setup.

Open Source Alternative to:

Zencoder

WaveTerm

Cross-platform terminal with AI built in

  • Stars

    22,581

  • Last commit

    7 days ago

  • License

    Apache-2.0
Enhance your terminal with AI, file previews, and web browsing. Available on MacOS, Linux, and Windows.

Open Source Alternative to:

Warp

Superset

AI
Run dozens of AI coding agents in parallel on your machine

  • Stars

    Stars growing over the last 30 days15,506

  • Last commit

    12 hours ago

  • License

    Elastic-2.0
macOS app that orchestrates multiple AI coding agents simultaneously, each in its own isolated Git worktree, so you can work on many tasks at once.

Open Source Alternative to:

Codex

Harper

Fast grammar checking that respects your privacy

  • Stars

    Stars growing over the last 30 days17,071

  • Last commit

    23 hours ago

  • License

    Apache-2.0
Open source grammar checker that analyzes your writing quickly while keeping your data completely private and secure on your device.

Open Source Alternative to:

Grammarly

Omnigent

AI
Common layer for composing and governing AI agents

  • Stars

    Stars growing over the last 30 days11,020

  • Last commit

    11 hours ago

  • License

    Apache-2.0
Meta-harness that sits above Claude Code, Codex, and other AI agents to add policy enforcement, sandboxing, and real-time collaborative sessions.

Open Source Alternative to:

Claude Managed Agents

FalkorDB

AI
Graph database built for GraphRAG and multi-tenant AI apps

  • Stars

    Stars growing quickly over the last 30 days10,498

  • Last commit

    2 days ago

  • License

    SSPL-1.0
Graph database using sparse matrix representation and linear algebra to deliver ultra-low latency Cypher queries, native multi-tenancy, and built-in GraphRAG support for AI applications.

Open Source Alternative to:

Neo4j

Requestly

Intercept, modify, and debug HTTP(S) requests effortlessly

  • Stars

    6,754

  • Last commit

    1 day ago

  • License

    AGPL-3.0
A powerful browser extension and desktop app for developers to manipulate network requests, debug APIs, and improve web app testing

Open Source Alternative to:

Postman

ACI.dev

AI
Build reliable AI agents with unified tool integration

  • Stars

    4,921

  • Last commit

    1 day ago

  • License

    Apache-2.0
Platform for connecting AI agents to 500+ tools with built-in multi-tenant auth management and granular permissions using either function calling or a unified MCP server

Open Source Alternative to:

Pipedream

Wakapi

Track coding time effortlessly, gain insights instantly

  • Stars

    4,462

  • Last commit

    3 days ago

  • License

    MIT
Open-source, self-hosted time tracking solution for developers. Analyze coding habits, improve productivity, and visualize progress.

Open Source Alternative to:

Clockify

Laminar

AI
AI-powered platform for engineering LLM products

  • Stars

    Stars growing over the last 30 days3,434

  • Last commit

    18 hours ago

  • License

    Apache-2.0
Laminar is an open-source platform that helps collect, understand, and utilize data for building high-quality LLM applications.

Open Source Alternative to:

LangChain

HTTPie

Modern command-line HTTP client for the API era

  • Stars

    4,049

  • Last commit

    2 years ago

  • License

    BSD-3-Clause
Intuitive, user-friendly CLI tool for making HTTP requests, debugging APIs, and testing web services with ease and efficiency.

Open Source Alternative to:

Postman

Zero

AI
Terminal coding agent with full model and data control

  • Stars

    Stars growing over the last 30 days1,740

  • Last commit

    2 days ago

  • License

    MIT
Open-source AI coding agent for the terminal that works with 25+ model providers, keeps sessions on your disk, and ships as a single Go binary with no telemetry.

Open Source Alternative to:

Claude Code

GitComet

Fast, local-first Git GUI built in Rust

  • Stars

    Stars growing over the last 30 days955

  • Last commit

    1 day ago

  • License

    AGPL-3.0
Open source Git GUI for Linux, macOS, and Windows, built in Rust for speed on large repositories with full diff, merge, and history tooling.

Open Source Alternative to:

GitKraken

LostPixel

Visual regression testing made effortless

  • Stars

    1,678

  • Last commit

    6 months ago

  • License

    MIT
Automated visual testing tool that detects UI changes, ensures consistency, and accelerates development workflows.

Open Source Alternative to:

Chromatic

Frontman

AI
AI coding agent that sees your live app and edits code

  • Stars

    719

  • Last commit

    11 hours ago

  • License

    Apache-2.0
Open-source AI coding agent that runs in your browser, sees your live DOM and app state, and makes real code edits from plain English descriptions.

Open Source Alternative to:

Lovable

Ethora

Messaging SDK with AI agents for web, iOS, and Android

  • Stars

    551

  • Last commit

    2 days ago

  • License

    Apache-2.0
Build branded chat apps with AI agents, group messaging, document exchange, and digital wallets using React and React Native components.

Open Source Alternative to:

Sendbird

Hive

Open-source GraphQL federation platform

  • Stars

    483

  • Last commit

    19 hours ago

  • License

    MIT
A fully open-source schema registry, analytics, and gateway for GraphQL federation and APIs

Open Source Alternative to:

Apollo GraphQL

Openinary

Self-hostable image and video delivery with URL transforms

  • Stars

    416

  • Last commit

    20 days ago

  • License

    AGPL-3.0
Upload, transform, and deliver images and videos via a REST API and URL parameters, using your own S3-compatible storage. Cloudinary-compatible syntax, no vendor lock-in.

Open Source Alternative to:

Cloudinary

Shelve

Simplify project management for developers

  • Stars

    458

  • Last commit

    13 days ago

  • License

    Apache-2.0
Shelve is a comprehensive project management tool designed to streamline workflows and enhance collaboration for developers and teams.

Open Source Alternative to:

Keeper

Ziit

Track coding time and boost developer productivity

  • Stars

    257

  • Last commit

    2 days ago

  • License

    AGPL-3.0
Monitor your coding sessions, analyze productivity patterns, and gain insights into your development workflow with comprehensive time tracking statistics.

Open Source Alternative to:

WakaTime

BugPin

Self-hosted visual bug reporting with screenshot annotation

  • Stars

    46

  • Last commit

    14 hours ago

  • License

    AGPL-3.0
Embeds a lightweight widget into web apps so users can capture screenshots, annotate issues, and submit reports with console logs and browser metadata included.

Open Source Alternative to:

Markup

OneHuman

Access control for AI agents your customers log in with

  • Stars

    21

  • Last commit

    2 days ago

  • License

    BUSL-1.1
Detects AI agents using customer credentials, masks private fields, holds risky actions for passkey approval, and signs every decision on your own server.

Open Source Alternative to:

HUMAN Security
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