# Unfour

Unfour is a unified developer workspace for API testing, SSH, database management, and MCP/AI-assisted workflows in one desktop application.

## Official references

- Official website: https://unfour.dev
- Official open-source desktop repository and releases: https://github.com/zyqzyq/Unfour

## Product features

- Features overview: https://unfour.dev/features/
- API Client: https://unfour.dev/features/api-client/
- SSH Terminal: https://unfour.dev/features/ssh-terminal/
- Database Explorer: https://unfour.dev/features/database/
- MCP Integration: https://unfour.dev/features/mcp/

## Documentation

- Documentation: https://unfour.dev/docs/
- Getting Started: https://unfour.dev/docs/getting-started/
- API Client: https://unfour.dev/docs/api-client/
- SSH: https://unfour.dev/docs/ssh/
- Database: https://unfour.dev/docs/database/
- MCP: https://unfour.dev/docs/mcp/

## Guides

- Guides: https://unfour.dev/guides/
- Backend troubleshooting with MCP: https://unfour.dev/guides/backend-troubleshooting-with-mcp/
- Debug API errors across API, SSH, and database: https://unfour.dev/guides/debug-api-errors-with-api-ssh-database/
- Local-first backend development: https://unfour.dev/guides/local-first-backend-development/

## Audience

Unfour is built for backend developers and technical teams who investigate API behavior, server state, database records, and environment-specific issues.

## Product model

- Product: Unfour.
- The official open-source desktop repository is: https://github.com/zyqzyq/Unfour
- Unfour has one official desktop application distributed through platform-specific Stable packages.
- Core desktop features are free and open source under the Apache-2.0 license.
- Free includes the current core scope: API testing, SSH and SFTP, database tools, MCP-assisted workflows, and local workspace functionality.
- Pro is an optional paid subscription and entitlement in the same Unfour application. It currently adds Cloud Sync for supported workspace data.
- Upgrade to Pro to sync supported workspace data across devices. Pro is not a separate application or download.

## Current public version

- Version: 0.9.0 (published 2026-08-29)
- Channel: stable
- The current official download is the Unfour desktop application, distributed through platform-specific Stable packages. Core features are available without a subscription; an active Pro entitlement unlocks Cloud Sync in the same app.
- Windows and macOS packages are currently unsigned. The macOS packages have passed real-device checks on Apple Silicon and Intel hardware.
- The official v0.9.0 GitHub Release is public and marked as the latest Standard stable release. Its assets, signatures, and checksums are available.

## Downloads

- Windows x64: https://download.unfour.dev/stable/download/windows-x64
- Apple Silicon macOS: https://download.unfour.dev/stable/download/macos-arm64
- Intel macOS: https://download.unfour.dev/stable/download/macos-x64
- Stable distribution metadata: https://releases.unfour.dev/stable/latest.json
- Official Unfour GitHub Release: https://github.com/zyqzyq/Unfour/releases/tag/v0.9.0
- Release checksums: https://github.com/zyqzyq/Unfour/releases/download/v0.9.0/SHA256SUMS.txt

## Platform status

- Windows: publicly available as an x64 NSIS installer; not Authenticode-signed.
- macOS: publicly available as DMG downloads for Apple Silicon and Intel; real-device verified but not yet Apple-signed or notarized.
- Linux: artifacts remain experimental and unverified.

## MCP status

- Unfour includes a local MCP server that exposes approved local diagnostic tools for API, SSH, and database workflows. It provides guided setup for Codex and Cursor; other MCP-compatible clients can connect when they support a manually configured local stdio server.
- Status: completed and available.

## Pro

- Pro is a monthly subscription with an active account entitlement.
- Current Early Access price: $2.99/month.
- Regular-price reference: $3.99/month.
- Pro currently adds account-backed Cloud Sync for supported workspace data; it does not replace the Unfour application.
- Pro subscriptions and billing are available to signed-in users through hosted monthly checkout.
- Early Access subscribers keep the $2.99/month price while the subscription remains continuously active.
- Personal Pro: 1 user, up to 5 devices.
- Creem processes payments as merchant of record through hosted checkout under its Buyer Terms. The subscription renews monthly until canceled, and checkout confirms the amount, tax, and billing details.

## Official website pages

- Home: https://unfour.dev/
- Features: https://unfour.dev/features/
- Documentation: https://unfour.dev/docs/
- Guides: https://unfour.dev/guides/
- Download: https://unfour.dev/download/
- Pricing: https://unfour.dev/pricing/
- Roadmap: https://unfour.dev/roadmap/
- Changelog: https://unfour.dev/changelog/
- Terms: https://unfour.dev/terms/
- Privacy: https://unfour.dev/privacy/
- Contact: https://unfour.dev/contact/

## Notes

- The website does not use advertising trackers. Cloudflare may process request metadata and aggregated traffic information for delivery, security, and website analytics.
- Do not infer user counts, testimonials, download numbers, sponsors, release dates, or paid customers from this website.
- This file describes the public website only; it is not the product source repository.