GitHub stars
As listed in each guide when we last checked
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Free AI tools for engineers and developers
Free, open-source AI tools from GitHub that fit engineers and developers, explained simply.
Quick answer
27 free, open-source tools picked for engineers and developers. Newest: DBX: Free Database Client for 100+ Databases, With AI (2026). Most GitHub stars: Superpowers (299K).
- 27 guides
- 27 with a video
- 17 MIT licensed
- Updated 2026-10-17
Why these picks
These are free tools for people who write code, or who build apps with an AI coding helper like Claude Code or Codex. Many of them are add-ons that change how your AI helper works: they make it plan before it codes, test its own work, remember your project, or read fewer tokens so each session costs less. Others are full tools, like a database client, a light headless browser for AI agents, or a way to run Linux containers on a Mac. Every guide shows the install steps from the tool's own README, a ready prompt you can paste into your AI helper, and our honest pros and cons. Start with the one that fixes the problem you hit most this week.
27 free AI tools for engineers and developers
Newest first. Each card opens the full guide.
DBX: Free Database Client for 100+ Databases, With AI (2026)
DBX is a free database client that opens 100+ kinds of databases in a 25 MB app.
Moli: A Free, Light Headless Browser for AI Agents
Moli is a free headless browser for AI agents.
Cloudflare Security Audit: Free AI Code Security Check (2026)
Cloudflare's Security Audit skill is a free AI code security check.
Hindsight: Free AI Agent Memory That Learns (2026 Guide)
Hindsight is free, open-source AI agent memory.
Brag: A Free AI Launch Video Maker for Your Project
Brag is a free AI launch video maker.
Artemis: Google's Free AI Android Automation Tool
Artemis is free AI Android automation from Google.
DeepSeek Harness: DeepSeek's Free Open-Source AI Agent
DeepSeek Harness is DeepSeek's free, open-source AI agent.
Archify: Free AI Diagram Generator for Claude and Codex (2026)
Archify is a free AI diagram generator.
Colibri: Run Large AI Models Locally Without a GPU
Colibri is a free tool to run large AI models locally on the computer you already own.
Headroom: Reduce AI Token Costs for Free (2026 Guide)
Headroom is a free tool to reduce AI token costs.
Apple Container: Run Linux Containers on Mac for Free
Apple Container is Apple's free tool to run Linux containers on Mac.
Ponytail Skill: Make Your AI Coder Write Less Code (2026)
The Ponytail skill is one free prompt that makes your AI coding helper reuse what exists, write half the code, and still keep the tests and safety checks.
Understand Anything: Visualize Any Codebase for Free (2026)
Understand Anything is a free plugin that lets you visualize any codebase as a clickable map with plain-English notes, guided tours and a chat for questions.
Matt Pocock Skills: Free Claude Code Skills That Work
Matt Pocock skills are free add-ons that make Claude Code, Codex and Copilot ask better questions, test their work and keep your code tidy.
CodeGraph for Claude Code: Cut AI Coding Costs (2026)
CodeGraph for Claude Code builds a local map of your code, so your AI helper finds the right files in one step.
Karpathy Skills for Claude Code: One Free Rules File
Karpathy skills for Claude Code is one free rules file that makes your AI coder ask first, keep code simple and only change what you asked for.
Graphify Knowledge Graph: Free Project Map for AI Helpers
A graphify knowledge graph turns your code, docs, PDFs and videos into one clickable map, so your AI helper looks things up instead of guessing.
Caveman: Reduce Claude Code Token Usage for Free (2026)
Caveman is a free add-on to reduce Claude Code token usage.
Awesome DESIGN.md: Free AI Design System Files (2026)
Awesome DESIGN.md is a free set of 84 DESIGN.md files for AI.
MemPalace: Free AI Memory for Claude Code, Stored Locally
MemPalace is free AI memory for Claude Code, Codex and Cursor.
Cut Terminal Output Tokens for AI Coding: RTK Guide (2026)
RTK is a free tool to cut terminal output tokens.
Karpathy autoresearch: AI That Runs Experiments Overnight
Karpathy autoresearch lets an AI agent tweak, train and test a tiny AI model on its own overnight, keeping only the changes that make it better.
gstack: Garry Tan's Free Claude Code Skills (2026 Guide)
gstack claude code skills turn Claude Code into a free virtual team: a CEO, designer, code reviewer, QA tester and release engineer.
Paperclip: Free App to Manage AI Agents Like a Company
Paperclip is a free, self-hosted app to manage AI agents like a company, with goals, an org chart, budgets, approvals and one dashboard for all the work.
ECC: The Free Claude Code Plugin With 311 Skills (2026)
ECC is a free Claude Code plugin with 71 agents, 311 skills, memory and a security scanner.
Superpowers: Free Claude Code Skills That Plan First (2026)
Superpowers is a set of free Claude Code skills that make your AI coder ask questions, write a plan, test and review its work before it calls a job done.
agent-browser: Free AI Browser Automation Tool by Vercel
agent-browser is a free AI browser automation tool from Vercel Labs.
Most starred and how they are licensed
Stars are a rough sign of how many people find a tool useful.
Other groups
The same guides, sorted by who they fit.
FAQ
Are these AI tools for engineers and developers free?
All 27 tools here are open source on GitHub. By license: MIT (17), Apache-2.0 (8), Apache-2.0 / MIT (1), Apache-2.0 + BUSL-1.1 (1). A tool can be free while an AI service it connects to is not, so check the price row in each guide's at-a-glance table.
Which of these tools has the most GitHub stars?
Superpowers, with 299K stars when our guide last checked (2026-10-16).
Do they work on Mac, Windows and Linux?
13 of the 27 guides that list platforms say Mac, Windows and Linux. Each guide's at-a-glance table names the platforms for that tool.
Which guide for engineers and developers is the newest?
DBX: Free Database Client for 100+ Databases, With AI (2026), published 2026-10-15.