Free Developer Tools

PlugThis is an AI-powered Chrome extension builder that generates complete, Manifest V3–compliant extensions from plain-English prompts, including optional Supabase backends and integrations with OpenAI/Gemini; output is a ready-to-install .zip containing 100% source code.

Butterfish Shell is an open-source CLI tool that wraps your existing shell (bash/zsh) and adds integrated ChatGPT-style LLM prompting, autosuggestions, and an optional agent (Goal Mode) so you can ask for commands, debug failures, and get contextual help directly in the terminal.

Maige is open-source infrastructure for running natural-language workflows on your codebase — automating issue/PR handling (labeling, assignment, comments, code review, simple code execution) and integrating with GitHub via webhooks, embeddings and a sandbox environment.

Remyx is a decision-intelligence platform for teams shipping AI that ranks candidate improvements to code and agents, drafts gated PRs, validates changes against eval suites (offline and A/B), and learns from every result to prioritize the next best change.

Quick Intel is a Web3 security and analytics platform offering a multi-chain smart contract scanner, real-time onchain data, AI-powered insights, and developer APIs for builders and traders.

vly.ai (now acquired by Freebuff) is an AI-first, realtime web app builder that provides managed backends, databases, integrations, and advanced coding agents for rapidly building and deploying production-ready web applications. The product emphasizes AI-driven code generation, realtime queries, and a large integration library.

HumanLayer is an AI-first IDE and collaboration platform that combines agent orchestration, versioned artifacts, and task/worktree management to help engineering teams ship 2–3x faster while maintaining code quality and architecture standards.

KushoAI is an enterprise-focused testing and reliability platform that automatically generates and runs API, security, end-to-end workflow, and UI tests, using domain-grounded AI to detect regressions, self-heal tests, and compute release risk for CI/CD pipelines.

Defang is a deployment platform and open-source CLI that takes a Docker Compose file and deploys applications into any AWS, GCP, or Azure account with built-in AI infrastructure, managed databases, security, and observability—designed for developers, freelancers, agencies, and companies that must run AI where their data lives.

Tiptap is a headless, open source editor framework and commercial Platform that lets teams build customizable, production-ready editors with 100+ extensions and paid add-ons for collaboration, document conversion, and AI-driven editing.

Onlook is an open-source visual editor that lets teams design directly in their real codebase — combining AI-assisted prototyping, a visual builder, and live editing for React-based projects to close the gap between designers and developers.

ChartDB is a database schema visualization and data-modeling tool that instantly generates editable ER diagrams from database schemas, available as a Cloud service and a self-hosted open-source editor.

OneNode is an AI-native database and unified semantic search framework that processes and stores text, image, video, and audio with built-in AI capabilities, vector search, object storage, background jobs, auto-scaling, and monitoring via a single API and SDK.

LLM Gateway is a unified API and routing layer that lets developers access 40+ LLM providers and 200+ models through a single OpenAI-compatible endpoint, with built-in cost analytics, reliability failover, key management, and options to self-host or use a managed service.