# Zero: Free Open Source Alternative to Amp, Antigravity, Claude Code

Canonical: https://caniforkit.com/fork/zero
Last updated: 2026-11-07

Zero (Open Source, Open Source) replaces Amp, Antigravity, Claude Code, Codex. Open-source AI coding agent for the terminal that works with 25+ model providers, keeps sessions on your disk, and ships as a single Go binary with no telemetry.

## Tool Specifications
- **Tool Name**: Zero
- **Type**: Open Source Project
- **License**: Open Source
- **Official Website**: https://zero.gitlawb.com/
- **GitHub Repository**: https://github.com/Gitlawb/zero
- **GitHub Stars**: ★ 1.8k
- **Runs On**: Self-host
- **Maintenance Status**: nov 2026
- **Platforms**: web, self-hosted, docker to self-host
- **Data Storage**: All application data and configuration live on your own server or local database.
- **Installation**: Clone https://github.com/Gitlawb/zero or deploy with Docker Compose
- **Setup Requirements**: Deploy via Docker or binary release from GitHub and configure environment variables.
- **The Catch / Limitation**: Requires self-hosting setup, updates, and server maintenance compared to managed Amp.

## Paid SaaS Applications Replaced (4)
Replacing these paid tools with Zero saves up to $60/mo ($720/yr) in software subscriptions:

| Replaced Software | Category | SaaS Price | Comparison Guide |
| --- | --- | --- | --- |
| [Amp](https://caniforkit.com/amp) | [ai assistants](https://caniforkit.com/category/ai-assistant) | $15/mo | [Compare Amp vs Zero](https://caniforkit.com/vs/amp-vs-zero) |
| [Antigravity](https://caniforkit.com/antigravity) | [ai assistants](https://caniforkit.com/category/ai-assistant) | $15/mo | [Compare Antigravity vs Zero](https://caniforkit.com/vs/antigravity-vs-zero) |
| [Claude Code](https://caniforkit.com/claude-code) | [ai assistants](https://caniforkit.com/category/ai-assistant) | $15/mo | [Compare Claude Code vs Zero](https://caniforkit.com/vs/claude-code-vs-zero) |
| [Codex](https://caniforkit.com/codex) | [ai assistants](https://caniforkit.com/category/ai-assistant) | $15/mo | [Compare Codex vs Zero](https://caniforkit.com/vs/codex-vs-zero) |

## Frequently Asked Questions

### Is Zero free and open source?
Zero is an open source tool licensed under Open Source that runs on self-host. Open-source AI coding agent for the terminal that works with 25+ model providers, keeps sessions on your disk, and ships as a single Go binary with no telemetry.

### What is the trade-off or limitation of using Zero?
Requires self-hosting setup, updates, and server maintenance compared to managed Amp.

## Related

- [Self-Hosted Open Source Directory](https://caniforkit.com/self-hosted)
- [All Paid SaaS Alternatives Index](https://caniforkit.com/alternatives)
- [Software Categories Directory](https://caniforkit.com/categories)
- [Homepage](https://caniforkit.com)