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The free Antigravity alternative
Antigravity champions agent-first development inside a desktop IDE. FreeCoder shares that agent-first philosophy but delivers it as a browser workspace you launch from the terminal — and it's free and unlimited, so agent-driven development doesn't come with a bill.
FreeCoder vs Antigravity at a glance
| Feature | FreeCoder | Antigravity |
|---|---|---|
| Price | Free | Freemium / Paid |
| Usage limits | None | Varies |
| Autonomous multi-file agent | Yes | Yes (agent-first) |
| Plan mode | Yes | Yes |
| Runs in | Browser app, launched from terminal | Desktop IDE |
| Bring your own model | Yes | Varies |
| Extensible (skills · plugins · MCP) | Yes | Varies |
| Platform | Windows (more soon) | macOS · Windows · Linux |
Agent-first, cost-free
Both put the agent at the center. FreeCoder adds skills, plugins & hooks and MCP to bend to your workflow, and keeps the whole thing free. It's Windows-only for now, with more platforms coming.
Get started free
You're one command away. On Windows, paste this into PowerShell:
irm https://freecoder.space/install.ps1 | iexThen run freecoder and open your project. Full steps in the getting-started guide.
Pick FreeCoder if the agent-first idea appeals but you want it free and in a clean browser UI.
Related
vs Windsurf
FreeCoder is a free alternative to Windsurf — an autonomous AI coding agent with plan mode and subagents, free and unlimited, no editor to install.
vs Clinevs Cline
Cline is open source but you pay per API token. FreeCoder is a free, unlimited AI coding agent with a built-in model — no API bill — plus plan mode and MCP.
vs Aidervs Aider
Aider is open source but needs a paid API key. FreeCoder is a free, unlimited AI coding agent with a built-in model and a clean browser UI — no per-token cost.
irm https://freecoder.space/install.ps1 | iex — then follow the getting-started guide. Free, unlimited, no card.