Frequently Asked Questions

FaynoSync is a self-hosted, open-source auto-updater service for desktop and cross-platform applications. It manages release distribution, versioning, and secure delivery of updates so your apps can update themselves automatically across Windows, macOS, and Linux.

Yes. FaynoSync is free and open source. The main API, dashboard UI, and admin panel are all available on GitHub under the ku9nov organization, and you can self-host the entire stack without licensing fees.

FaynoSync is platform- and language-agnostic by design — it can manage updates for any application, written in any programming language, on any platform. You flexibly define your own platforms and architectures to match exactly what you ship, so support is not limited to a fixed list. Common setups include desktop apps on Windows, macOS, and Linux with frameworks like Electron (electron-updater), Tauri, or Squirrel, and architectures such as AMD64 and ARM64 — but these are examples, not boundaries.

Squirrel and electron-updater are client-side update mechanisms, while FaynoSync is the self-hosted backend that stores releases, manages versions and channels, and serves update metadata to those clients. FaynoSync works alongside them, giving you a single server to manage updates for multiple apps and platforms with multi-cloud storage and telemetry.

Yes. FaynoSync is designed to be self-hosted. You run the API with MongoDB and connect it to your own object storage, keeping full control over your release data and update infrastructure. See the Getting Started guide for local and production deployment instructions.

FaynoSync stores update artifacts in object storage and supports multi-cloud distribution, including Amazon S3, S3-compatible providers, and self-hosted MinIO. This lets you keep artifacts close to your users and avoid vendor lock-in.

Yes. FaynoSync supports multiple release channels (such as stable, beta, and nightly) so you can publish versions to specific audiences, test releases before a full rollout, and control which users receive which updates.

FaynoSync delivers updates over a secure pipeline with metadata signature verification inspired by The Update Framework (TUF). Update metadata is signed and verified, expiration and version monotonicity are enforced, and private artifacts are served through authenticated, signed storage URLs.

Yes. FaynoSync includes built-in telemetry that lets you track update adoption, active versions, and rollout progress across your user base, giving you insight into how releases are performing in production.

Start with the Getting Started documentation, which walks you through running FaynoSync locally with Docker, configuring storage and MongoDB, and uploading your first application release. From there you can connect your desktop app and enable automatic updates.