Open Source Development Software

Development tools provide the environments and utilities needed to write, debug, and deploy software. These tools automate repetitive coding tasks and manage the lifecycle of applications through integrated editors, command line interfaces, and visual workflow builders. This type of software serves programmers and system architects who need to build custom logic or deploy AI agents. Self-hosting these apps ensures that source code, API keys, and internal build pipelines remain on private infrastructure rather than relying on external cloud platforms.

This page lists 203 open source tools in the Development category. The most popular are n8n, OpenCode and Visual Studio Code. Most use the MIT or Apache-2.0 license, and 144 offer an official Docker image.

NetPad

General Purpose Editors

A cross-platform C# editor and playground for running code snippets without creating full projects.

2.3k StarsDesktop App

Open Wearables

API Integration

Unify health data from multiple wearable providers into a single API for analysis and automation.

2.2k StarsWeb App / Server

Frappe Builder

Website Builders

A low-code website builder with a visual editor and integrated CMS for creating responsive web pages.

2.2k StarsWeb App / Server

Sendune

Email Marketing & Newsletters

Create and manage HTML email templates using a no-code designer for transactional and marketing communications.

2.2k StarsWeb App / Server

Cozystack

Cloud Computing

A framework for converting bare metal servers into a cloud platform with a REST API for infrastructure management.

2.2k StarsWeb App / Server

RunJS

Development Environments

A desktop playground for JavaScript and TypeScript that provides instant execution and results for code experiments.

2.2k StarsDesktop App

Websoft9

PaaS & Deployment Tools

A web-based PaaS and Linux panel for deploying and managing over 200 open source applications.

2.1k StarsWeb App / Server

Corteza

Low-Code/No-Code

A low-code platform for building CRM, business process applications, and structured data tools with automated workflows.

2.1k StarsWeb App / Server

Fusio

API Infrastructure

Self-hosted API management platform to transform internal infrastructure into scalable API products for humans and AI agents.

2.1k StarsWeb App / Server

Ferron

API Infrastructure

A memory-safe web server written in Rust with automatic TLS certificate acquisition and renewal.

2.1k StarsWeb App / Server

Saltcorn

Low-Code/No-Code

Build web and mobile database applications using a no-code interface with flexible views and layouts.

2k StarsWeb App / Server

AntigravityManager

AI Gateways

Manage multiple Google Gemini and Claude AI accounts with automated switching and real-time quota monitoring.

2k StarsDesktop App

OpenRouteService

API Infrastructure

A customizable routing engine providing directions, isochrones, and distance matrices using OpenStreetMap geographic data.

1.9k StarsWeb App / Server

Envoy AI Gateway

AI Gateways

A gateway for routing application traffic to generative AI services with support for over sixteen LLM providers.

1.9k StarsWeb App / Server

Dyrector

CI/CD Platforms

Manage container deployments and versions across Docker, Kubernetes, and Podman from a single self‑hosted platform.

1.8k StarsWeb App / Server

OpenRemote

Backend-as-a-Service (BaaS)

An open source IoT platform for device management, asset tracking, and automation via a rules engine.

1.8k StarsWeb App / Server

DreamFactory

API Infrastructure

A self-hosted data access platform that automatically generates governed REST APIs from various data sources.

1.8k StarsWeb App / Server

Review Board

Development Environments

A web-based code and document review tool for tracking changes and managing development discussions.

1.7k StarsWeb App / Server

Routr

API Infrastructure

A lightweight SIP proxy, location server, and registrar for scalable telephony and communication service infrastructure.

1.7k StarsWeb App / Server

LostPixel

Visual Testing

Detects UI changes through visual regression testing for Storybook, Ladle, Histoire, and modern frontend application pages.

1.7k StarsWeb App / Server

Elgg

Web Frameworks

A rapid development framework for building socially aware web applications and social networking engines using PHP.

1.7k StarsWeb App / Server

Semaphore

CI/CD Platforms

A continuous integration and delivery platform that uses YAML configurations to automate software builds and deployments.

1.6k StarsWeb App / Server

IT Tools

Development Environments

A collection of handy online utility tools for developers with a focus on user experience.

1.5k StarsWeb App / Server

OpenSIPS

Encrypted Communication

A multi-functionality SIP server implementation designed for professional communication platforms requiring high performance and security.

1.5k StarsWeb App / Server

LiveCodes

Development Environments

A client side code playground supporting over 90 languages and frameworks for rapid prototyping and sharing.

1.5k StarsWeb App / Server

Conar

Database Tools & GUIs

Manage multiple database connections with AI assisted SQL query writing and encrypted storage for various database engines.

1.4k StarsWeb App / Server

Voiden

API Clients

An offline API workspace that uses plain text files to unify requests, documentation, and tests.

1.4k StarsCLI / Terminal

MODX Revolution

Traditional & Flat-File CMS

A flexible PHP content management system and application framework for building custom websites and mobile APIs.

1.4k StarsWeb App / Server

Synara

AI Coding Assistants

A local-first desktop workspace for managing AI coding agents through existing subscriptions with parallel worktrees and integrated terminals.

1.4k StarsDesktop App

Terrateam

Infrastructure as Code (IaC)

Automates infrastructure plans and applies within pull requests for Terraform, OpenTofu, and Pulumi using GitOps workflows.

1.2k StarsWeb App / Server
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