Free AI Coding Tools - No Credit Card Required

Low-code platform for building internal tools, admin panels, and dashboards. Retool combines 90+ drag-and-drop UI components with JavaScript extensibility and AI app generation to connect any database or API.

Official collection of Agent Skills for Obsidian, created by CEO Steph Ango (kepano). Teaches AI agents how to work with Obsidian Markdown (wikilinks, callouts, frontmatter), Bases databases, JSON Canvas whiteboards, the Obsidian CLI, and Defuddle web extraction. Compatible with Claude Code, Codex, and any skills-compatible agent. 13.9k+ GitHub stars.

Free, open-source AI coding assistant built on a 13B-parameter multilingual model by Tsinghua University (THUDM). Provides code completion, generation, translation, commenting, intelligent Q&A, unit test generation, and repository-level chat across 100+ programming languages. Available as extensions for VS Code, JetBrains IDEs, Visual Studio, and HBuilderX.

NTM (Named Tmux Manager) is a free, open-source tool that transforms tmux into a multi-agent command center. Spawn, tile, and coordinate Claude Code, OpenAI Codex, and Gemini CLI agents across named panes with broadcast prompts, a TUI command palette, conflict tracking, context monitoring, and persistent sessions that survive SSH disconnections.

AGENTS.md is an open format standard for documenting instructions that AI coding agents need to work on software projects. Think of it as a README for agents: a dedicated, predictable place for setup commands, code style, testing instructions, and project conventions. Stewarded by the Agentic AI Foundation under the Linux Foundation, it is used by 60,000+ open-source projects.

cmux is a free, open-source native macOS terminal built on libghostty (Ghostty rendering engine) with vertical tabs, split panes, notification rings, and a built-in scriptable browser, designed for managing multiple parallel AI coding agents like Claude Code, Codex, and Gemini CLI.

Microsoft's AI-assisted development tool for Visual Studio and VS Code. Provides whole-line completions and API usage examples based on thousands of open-source projects.