Layer / Who writes the code
Execution
The coding agents and harnesses that read a repository, change files, run commands, and produce a reviewable diff.
- Aider
Git-native CLI agent that commits as it works.
- Amazon Q Developer
AWS’s coding assistant and agent, billed into the AWS account.
- Amp
Sourcegraph’s agent-native coding product, successor energy to Cody.
- Augment
Enterprise coding agent that sells context over huge codebases.
- Bolt
StackBlitz’s in-browser agent that builds apps in WebContainers.
- Browserbase
Headless browsers as a service for agents that must click.
- Claude Code
Anthropic's coding agent across terminal, IDE, desktop, and browser.
- Cline
Open VS Code agent that drives the editor like a human.
- Continue
Open IDE agents, acquired by Cursor, source still public.
- Crush
Charm’s glamorous terminal coding agent.
- Cursor
An agent-native IDE with cloud agents that run in isolated VMs.
- Devin
Cognition’s cloud software engineer; Windsurf is now Devin Desktop.
- Ellipsis
AI reviewer and fixer that can open follow-up PRs.
- Factory
Droids across the SDLC, sold as a software factory.
- Fern
OpenAPI-to-SDKs and docs, an alternative to Stainless.
- Gemini CLI
Google’s open-source terminal agent for Gemini models.
- Gemini Code Assist
Google’s IDE coding assistant for Gemini, distinct from Jules.
- GitHub Copilot
Incumbent coding assistant with a cloud coding agent on GitHub.
- Goose
Block’s local-first, open-source agent with recipes.
- Jules
Google’s asynchronous coding agent that opens pull requests.
- Junie
JetBrains’ coding agent inside IntelliJ-family IDEs.
- Kilo
Open agent across IDE and CLI, plus a zero-markup model gateway.
- Lovable
Prompt-to-full-stack app builder with a hosted computer.
- Modal
Serverless containers and GPUs that agents can treat as a computer.
- OpenAI Codex
OpenAI’s coding agent across CLI, IDE, and cloud tasks.
- OpenCode
Open terminal coding agent; Kilo CLI is a downstream fork.
- OpenHands
Open software-agent runtime with a computer you can watch.
- Plandex
Open terminal agent that plans large diffs in a sandbox.
- Pydantic AI
Typed Python agents from the Pydantic team.
- Qodo
Generation and review agents aimed at test-aware pull requests.
- Replit Agent
Hosted computer plus agent that can build and deploy an app.
- Roo Code
Cline fork aimed at modes, automation, and teams.
- smolagents
Hugging Face’s small, first-class code-agent library.
- Sourcery
Refactoring and review assistant with a long IDE history.
- Stainless
SDK generation from an OpenAPI spec — a machine-readable intent.
- SWE-agent
Princeton’s agent that made SWE-bench a product category.
- Tabby
Self-hosted coding assistant you run like an internal service.
- Tabnine
Long-running completion vendor with enterprise model hosting options.
- Tessl
Spec-first platform for building software with agents.
- Trae
ByteDance’s agentic IDE, free-tier aggressive, closed runtime.
- Trevize
Shared cloud workspaces where teams and agents close the loop.
- v0
Vercel’s UI generator that ships into a Next.js repo.
- Vercel AI SDK
TypeScript SDK for streaming model UIs and tool-calling apps.
- Warp
Open terminal, multi-model agents, and factories in early access.
- Zed
Open Rust editor with first-class agent panels.