Best Alternatives to Factory AI

Open-source platform for cloud coding agents — formerly OpenDevin — usable as CLI, web GUI, or SDK.

Enterprise-grade AI coding assistant with a proprietary Context Engine that indexes millions-of-line codebases in real time, plus an Auggie CLI agent — pitched at large engineering orgs where Cursor/Copilot lose the plot at scale.

Open-source autonomous coding agent that runs as a VS Code (and JetBrains) extension, using your own API keys to plan, edit files, run terminal commands, and iterate against real feedback — the reference implementation of a transparent agentic coding loop.

Open-source AI code assistant for VS Code and JetBrains with a hub for custom assistants, MCP tools, prompts, and rules — the go-to when a team wants a Copilot-shaped experience they fully control.

Autonomous AI software engineer trained on real engineering trajectories — "the copilot era is over."

Devin is an autonomous AI software engineer from Cognition that plans, writes, and ships code from a single prompt, running long-horizon engineering work in a cloud sandbox.

From $500/mo

AI code review agent that reads your entire codebase, comments on every PR with senior-engineer feedback, and learns your team's conventions.

Paste a screenshot, get production-ready code — open-source tool and hosted service that converts UI mockups to working frontends.

Sourcegraph Amp is Sourcegraph's frontier-model coding agent built for monorepos, with live access to the Sourcegraph code graph and MCP support.

Open-source platform for running 10+ parallel coding agents simultaneously via isolated workspaces with Git integration and no API markup.

Agentic IDE from the Codeium team (now under Cognition after the OpenAI acquisition drama) built around the Cascade agent — a flow-first editor that keeps you and the AI in sync as it edits, runs, and iterates across a whole codebase.

From Free

Zed supports fast code editor, ai assistance, collaboration for native code editing and pair programming.