# 8 Best Open Source Alternatives for Antigravity

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

Looking for the best open source alternative for Antigravity? Compare 8 verified free and open source alternatives to Antigravity (OpenCode, pi, Zed) with license details, self-hosting requirements, and practical trade-offs.

## Antigravity Overview & Subscription Cost
- **Product**: Antigravity
- **Category**: [ai assistants](https://caniforkit.com/category/ai-assistant)
- **Paid Subscription Price**: $15/month per seat
- **1-Seat Annualized Cost**: $180/year
- **5-Person Team Annualized Cost**: $900/year
- **10-Person Team Annualized Cost**: $1,800/year
- **Can I Vibe-Code / Rebuild It Myself?**: NO (use a free alternative, save the tokens)
- **Rebuild Verdict**: Instead of paying recurring SaaS fees for Antigravity or rebuilding it from scratch, deploy one of the 8 battle-tested open-source alternatives like OpenCode.

## Verified Free & Open Source Alternatives

| Alternative | Type | License | Runs On | GitHub Stars | Head-to-Head |
| --- | --- | --- | --- | --- | --- |
| [OpenCode](https://caniforkit.com/fork/opencode) | Open Source | MIT | Local | ★ 225.1k | [Compare vs Antigravity](https://caniforkit.com/vs/antigravity-vs-opencode) |
| [pi](https://caniforkit.com/fork/pi) | Open Source | Open Source | Self-host | ★ 120.5k | [Compare vs Antigravity](https://caniforkit.com/vs/antigravity-vs-pi) |
| [Zed](https://caniforkit.com/fork/zed) | Open Source | GPL-3.0+ | Local | ★ 93.9k | [Compare vs Antigravity](https://caniforkit.com/vs/antigravity-vs-zed) |
| [Cline](https://caniforkit.com/fork/cline) | Open Source | Apache-2.0 | Local | ★ 71.4k | [Compare vs Antigravity](https://caniforkit.com/vs/antigravity-vs-cline) |
| [Kilo](https://caniforkit.com/fork/kilocode) | Open Source | Open Source | Local | ★ 27.9k | [Compare vs Antigravity](https://caniforkit.com/vs/antigravity-vs-kilocode) |
| [CodeEdit](https://caniforkit.com/fork/codeedit) | Open Source | Open Source | Local | ★ 23.1k | [Compare vs Antigravity](https://caniforkit.com/vs/antigravity-vs-codeedit) |
| [Athas](https://caniforkit.com/fork/athas) | Open Source | Open Source | Local | ★ 3.1k | [Compare vs Antigravity](https://caniforkit.com/vs/antigravity-vs-athas) |
| [Zero](https://caniforkit.com/fork/zero) | Open Source | Open Source | Self-host | ★ 1.8k | [Compare vs Antigravity](https://caniforkit.com/vs/antigravity-vs-zero) |

## In-Depth Alternative Profiles

### OpenCode
- **Fork Page**: [OpenCode Profile](https://caniforkit.com/fork/opencode)
- **Head-to-Head Comparison**: [Antigravity vs OpenCode](https://caniforkit.com/vs/antigravity-vs-opencode)
- **Official Website**: https://opencode.ai/
- **Source Code Repository**: https://github.com/sst/opencode
- **License**: MIT
- **Runs On**: Local
- **GitHub Stars**: 225.1k
- **Maintenance Activity**: nov 2026
- **Supported Platforms**: desktop, cli, one-click install
- **Summary**: Open source AI coding agent that works in your terminal, IDE, or desktop app, supporting 75+ LLM providers with no code storage.
- **The Catch vs Antigravity**: It gives you one agent with tools rather than an orchestrator that splits a task across research, coding, browser and review workers.
- **Installation**: Install script, Homebrew or npm
- **Setup**: You bring and pay for provider API keys, one account per vendor
- **Data Storage**: Source files stay in the working repo; credentials and session data live under the local OpenCode data directory

### pi
- **Fork Page**: [pi Profile](https://caniforkit.com/fork/pi)
- **Head-to-Head Comparison**: [Antigravity vs pi](https://caniforkit.com/vs/antigravity-vs-pi)
- **Official Website**: https://pi.dev/
- **Source Code Repository**: https://github.com/earendil-works/pi
- **License**: Open Source
- **Runs On**: Self-host
- **GitHub Stars**: 120.5k
- **Maintenance Activity**: nov 2026
- **Supported Platforms**: web, self-hosted, docker to self-host
- **Summary**: Terminal-based coding agent with a minimal core, 15+ LLM providers, tree-structured session history, and a TypeScript extension system for building your own workflows.
- **The Catch vs Antigravity**: Requires self-hosting setup, updates, and server maintenance compared to managed Antigravity.
- **Installation**: Clone https://github.com/earendil-works/pi or deploy with Docker Compose
- **Setup**: Deploy via Docker or binary release from GitHub and configure environment variables.
- **Data Storage**: All application data and configuration live on your own server or local database.

### Zed
- **Fork Page**: [Zed Profile](https://caniforkit.com/fork/zed)
- **Head-to-Head Comparison**: [Antigravity vs Zed](https://caniforkit.com/vs/antigravity-vs-zed)
- **Official Website**: https://zed.dev/
- **Source Code Repository**: https://github.com/zed-industries/zed
- **License**: GPL-3.0+
- **Runs On**: Local
- **GitHub Stars**: 93.9k
- **Maintenance Activity**: nov 2026
- **Supported Platforms**: desktop, one-click install
- **Summary**: A Rust-built code editor from the creators of Atom and Tree-sitter, combining native performance with multiplayer collaboration and deep AI integration.
- **The Catch vs Antigravity**: It requires changing editors and still has a smaller extension ecosystem and less mature AI autocomplete and indexing workflow than Cursor.
- **Installation**: Direct desktop download, Homebrew, winget or install script
- **Setup**: Editor installation is clean; AI needs a Zed account, provider subscription or key, gateway, or local model, and platform hardware support varies
- **Data Storage**: Source files stay local; provider keys use the system keychain, while AI prompts and code context go to the selected provider or local model

### Cline
- **Fork Page**: [Cline Profile](https://caniforkit.com/fork/cline)
- **Head-to-Head Comparison**: [Antigravity vs Cline](https://caniforkit.com/vs/antigravity-vs-cline)
- **Official Website**: https://cline.bot/
- **Source Code Repository**: https://github.com/cline/cline
- **License**: Apache-2.0
- **Runs On**: Local
- **GitHub Stars**: 71.4k
- **Maintenance Activity**: nov 2026
- **Supported Platforms**: desktop, cli, extension, one-click install
- **Summary**: AI coding agent that runs inside VS Code and the terminal, supporting multi-file edits, bash execution, and any LLM provider via bring-your-own-key.
- **The Catch vs Antigravity**: No worker-agent delegation and no browser verification step, so long multi-stage tasks stay a manual relay.
- **Installation**: VS Code or JetBrains extension, or npm-installed CLI
- **Setup**: Sign in for Cline inference or bring your own key
- **Data Storage**: Code stays in the repo and task history is stored locally; prompts and context go to the chosen provider

### Kilo
- **Fork Page**: [Kilo Profile](https://caniforkit.com/fork/kilocode)
- **Head-to-Head Comparison**: [Antigravity vs Kilo](https://caniforkit.com/vs/antigravity-vs-kilocode)
- **Official Website**: https://kilo.ai/
- **Source Code Repository**: https://github.com/kilo-org/kilocode
- **License**: Open Source
- **Runs On**: Local
- **GitHub Stars**: 27.9k
- **Maintenance Activity**: nov 2026
- **Supported Platforms**: desktop, cross-platform, one-click install
- **Summary**: Open source AI coding agent with 500+ models, bring-your-own-key support, and specialized modes for writing, debugging, and planning code across IDEs and CLI.
- **The Catch vs Antigravity**: Community-driven open source project without dedicated enterprise SLAs.
- **Installation**: Clone https://github.com/kilo-org/kilocode or deploy with Docker Compose
- **Setup**: Download the native package or installer for your operating system.
- **Data Storage**: All application data lives locally on your own machine.

### CodeEdit
- **Fork Page**: [CodeEdit Profile](https://caniforkit.com/fork/codeedit)
- **Head-to-Head Comparison**: [Antigravity vs CodeEdit](https://caniforkit.com/vs/antigravity-vs-codeedit)
- **Official Website**: https://codeedit.app
- **Source Code Repository**: https://github.com/codeeditapp/codeedit
- **License**: Open Source
- **Runs On**: Local
- **GitHub Stars**: 23.1k
- **Maintenance Activity**: nov 2026
- **Supported Platforms**: desktop, cross-platform, one-click install
- **Summary**: A lightweight, natively built editor. Open source and free forever. Develop any project using any language at speeds like never before.
- **The Catch vs Antigravity**: Community-driven open source project without dedicated enterprise SLAs.
- **Installation**: Clone https://github.com/codeeditapp/codeedit or deploy with Docker Compose
- **Setup**: Download the native package or installer for your operating system.
- **Data Storage**: All application data lives locally on your own machine.

### Athas
- **Fork Page**: [Athas Profile](https://caniforkit.com/fork/athas)
- **Head-to-Head Comparison**: [Antigravity vs Athas](https://caniforkit.com/vs/antigravity-vs-athas)
- **Official Website**: https://athas.dev/
- **Source Code Repository**: https://github.com/athasdev/athas
- **License**: Open Source
- **Runs On**: Local
- **GitHub Stars**: 3.1k
- **Maintenance Activity**: nov 2026
- **Supported Platforms**: desktop, cross-platform, one-click install
- **Summary**: Open-source code editor for macOS, Windows, and Linux that puts coding agents, terminal, Git, and GitHub in a single window.
- **The Catch vs Antigravity**: Community-driven open source project without dedicated enterprise SLAs.
- **Installation**: Clone https://github.com/athasdev/athas or deploy with Docker Compose
- **Setup**: Download the native package or installer for your operating system.
- **Data Storage**: All application data lives locally on your own machine.

### Zero
- **Fork Page**: [Zero Profile](https://caniforkit.com/fork/zero)
- **Head-to-Head Comparison**: [Antigravity vs Zero](https://caniforkit.com/vs/antigravity-vs-zero)
- **Official Website**: https://zero.gitlawb.com/
- **Source Code Repository**: https://github.com/Gitlawb/zero
- **License**: Open Source
- **Runs On**: Self-host
- **GitHub Stars**: 1.8k
- **Maintenance Activity**: nov 2026
- **Supported Platforms**: web, self-hosted, docker to self-host
- **Summary**: 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.
- **The Catch vs Antigravity**: Requires self-hosting setup, updates, and server maintenance compared to managed Antigravity.
- **Installation**: Clone https://github.com/Gitlawb/zero or deploy with Docker Compose
- **Setup**: Deploy via Docker or binary release from GitHub and configure environment variables.
- **Data Storage**: All application data and configuration live on your own server or local database.

## Frequently Asked Questions

### What is the best free alternative to Antigravity?
The top free alternative to Antigravity is OpenCode (open source, MIT). Open source AI coding agent that works in your terminal, IDE, or desktop app, supporting 75+ LLM providers with no code storage. Other popular Antigravity replacements include pi, Zed, Cline.

### How much does switching from Antigravity to a free alternative save?
Antigravity starts at $15/month per seat ($180/year). Switching a 5-person team to a free alternative like OpenCode saves $900 per year in software subscription fees.

### What is the catch when switching away from Antigravity?
While OpenCode replaces core Antigravity features without subscription fees, the real-world trade-off is: It gives you one agent with tools rather than an orchestrator that splits a task across research, coding, browser and review workers.

## Related

- [ai assistants Software Category Hub](https://caniforkit.com/category/ai-assistant)
- [All Paid SaaS Alternatives Index](https://caniforkit.com/alternatives)
- [Self-Hosted Software Directory](https://caniforkit.com/self-hosted)
- [Homepage](https://caniforkit.com)