Coding & Languages — AI Agents, Skills & Tools
Agents, skills, guides, tools, and commands for coding & languages — 30 curated resources for building with AI coding agents.
Backend Developer
Use this agent to build server-side features — endpoints, business logic, data access, background jobs. Examples — a new REST/GraphQL endpoint, a queue worker, a database integration.
Frontend Developer
Use this agent to build UI — responsive layouts, components, accessibility, and design-system work. Examples — implementing a Figma design, fixing a11y issues, building a reusable component.
Mobile Developer
Use this agent to build cross-platform mobile apps with React Native + Expo — screens, navigation, native modules, and shipping via EAS. Examples — adding a tab-based navigation flow, fixing a janky FlatList, shipping a build to TestFlight with EAS.
Golang Pro
Use this agent for idiomatic Go — concurrency, errors, small interfaces, stdlib-first design, and profiling. Examples — fixing a goroutine leak, designing a context-aware API, profiling a hot path with pprof.
Python Pro
Use this agent for idiomatic, performant Python — typing, async, packaging, and stdlib mastery. Examples — refactoring to idiomatic Python, async I/O, packaging a library.
React Specialist
Use this agent for React architecture — hooks, state, performance, Server Components, and patterns. Examples — fixing re-render issues, designing component state, adopting RSC.
Rust Pro
Use this agent for idiomatic Rust — ownership, lifetimes, error handling, traits, async with tokio, and the cargo toolchain. Examples — fixing borrow-checker errors, designing a trait API, making async code compile cleanly under tokio.
SQL Pro
Use this agent for SQL itself — correct joins and window functions, indexing, EXPLAIN plans, schema design, and safe migrations on Postgres/MySQL. Examples — making a slow query fast, designing a normalized schema, writing a reversible migration.
Typescript Pro
Use this agent for advanced TypeScript — generics, type-level programming, strictness, and inference. Examples — typing a tricky API, fixing type errors, designing a type-safe library surface.
AI Coding Agents in 2026: The Open-Source & CLI Edition
Cursor and Windsurf vs the open-source agents — Cline, Aider, Codex CLI, Roo Code, and more. Who should bring their own model, and when to stay in the terminal.
Cursor vs Claude Code vs GitHub Copilot vs Windsurf in 2026
A practical, opinionated comparison of the four mainstream AI coding tools — form factor, agentic depth, model choice, and who each one is for.
Bolt
StackBlitz's in-browser AI agent that builds, runs, and deploys full-stack web apps in a WebContainer.
Codex CLI
OpenAI's open-source terminal coding agent with sandboxed execution and two-layer approval controls.
Cody
Sourcegraph's AI coding assistant for the IDE, grounded in deep codebase context.
Continue
An open-source IDE extension for building custom AI coding assistants.
Devin
Cognition's autonomous AI software engineer that works in its own cloud workspace with an editor, terminal, and browser.
Gemini CLI
Google's open-source terminal AI agent powered by Gemini models, with a 1M-token context window and built-in tools.
Github Copilot
GitHub’s AI pair programmer with inline completions and an agent mode.
Goose
Block's open-source, on-machine AI agent that is MCP-native and model-agnostic, with a CLI and desktop app.
Lovable
An AI app builder that turns natural-language prompts into shippable full-stack web apps.
Replit Agent
Replit's AI agent that builds, runs, and deploys full-stack apps from a prompt inside the Replit cloud IDE.
Roo Code
A discontinued open-source VS Code agent (a Cline fork); the team has since pivoted away from the IDE extension.
Tabnine
An AI code completion and chat assistant built around code privacy, self-hosting, and air-gapped enterprise deployment.
V0
Vercel's generative UI builder that turns prompts into production-ready React, Next.js, and shadcn/ui apps.
Devin Desktop (formerly Windsurf)
An agentic IDE — formerly Windsurf, now Devin Desktop from Cognition AI — with flows that take multi-step actions across your codebase.
New Component
Scaffold a new UI component matching the project conventions.