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Onyx

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What Onyx is

Onyx is a free, open-source game launcher for Windows and Linux that combines libraries from multiple stores. It can import games from Steam, Epic, GOG, Xbox, and other sources without requiring an account or subscription. Library views include Grid, List, Logo, Carousel, and Cover Flow. You can edit game titles, release dates, and developer names, and search IGDB or RAWG for metadata and SteamGridDB for artwork. Those services require your own API keys and adherence to their terms and rate limits. A game’s context menu or details panel can open a preferred mod manager. Settings cover scaling, spacing, accent colors, performance, and interface behavior. Windows has an installer. Linux AppImage, .deb, and .rpm packages are testing builds, and the project notes rough edges while Linux support remains in testing. macOS is unsupported and not currently planned. Onyx also has no cloud sync. Discord and Reddit are listed for community discussion and updates.

Who it suits

Onyx suits players who want one library for games spread across several launchers, with no account or subscription. It is intended for Windows users and Linux users willing to use testing builds.

What it does well

  • Free and open source
  • Imports libraries from multiple stores
  • Offers five library viewing modes
  • Supports metadata and artwork editing
  • Requires no account or subscription

What to know first

  • Linux builds are still in testing
  • Linux support has rough edges
  • macOS is unsupported and not planned
  • No cloud sync

Verdict

Onyx centralizes games from several launchers and provides flexible library views, metadata editing, and interface controls at no subscription cost. Linux users should expect testing-stage limitations, and macOS users cannot use it.

Facts from Onyx's own pages

Accounts
The site says no account is required to use Onyx. · onyxlauncher.co.uk, 8 Oct 2026
Accounts and subscription
The site says no account is required and there is no subscription. · onyxlauncher.co.uk, 9 Oct 2026
Artwork services
The README lists IGDB and RAWG for game metadata, and SteamGridDB for artwork; it says users need their own API keys and must follow provider terms and rate limits. · github.com, 8 Oct 2026
Community and support
The site links to Discord for chatting with developers and users, Reddit for discussion and updates, and Ko-fi for contributions. · onyxlauncher.co.uk, 9 Oct 2026
Cost and license
The project is described as open source with no subscription, and its GitHub README says it is free under GPL-3.0-or-later. · github.com, 8 Oct 2026
Credential storage
The README says API credentials are stored in the operating system's secure credential store when available, with electron-store as a fallback. · github.com, 8 Oct 2026
Customization
Onyx settings include performance and interface options, while view personalization includes scaling, spacing, and accent colors. · onyxlauncher.co.uk, 9 Oct 2026
Launcher integrations
The site names Steam, Epic, GOG, and Xbox among the libraries Onyx can import, with other sources also supported. · onyxlauncher.co.uk, 8 Oct 2026
Library views
Library views include grid, list, logo, carousel, and cover flow. · onyxlauncher.co.uk, 9 Oct 2026
Linux integrations
The README says Linux support is in testing; Steam is supported, Epic and GOG are read through Heroic, and Lutris and Bottles can be detected for folder scans. · github.com, 8 Oct 2026
Linux packages
The site lists Linux AppImage, .deb, and .rpm builds as testing and warns users to expect rough edges. · onyxlauncher.co.uk, 8 Oct 2026
Linux support limits
The site says Linux support has rough edges and asks users to report problems. · onyxlauncher.co.uk, 9 Oct 2026
macOS support
The README says macOS is not supported and is not currently planned. · github.com, 8 Oct 2026
Metadata and artwork
Users can edit game titles, release dates, and developers, and search multiple sources for box art and banners. · onyxlauncher.co.uk, 9 Oct 2026
Mod managers
Users can open a preferred mod manager for a game from its right-click menu or details panel. · onyxlauncher.co.uk, 9 Oct 2026
Open source
The site describes Onyx as open source. · onyxlauncher.co.uk, 9 Oct 2026
Purpose
Onyx combines games you already own into one launcher and library. · onyxlauncher.co.uk, 9 Oct 2026
Store integrations
The site names Steam, Epic, GOG, and Xbox among the libraries Onyx can import. · onyxlauncher.co.uk, 9 Oct 2026
Target users
The site describes Onyx as a focused launcher for players who want less setup overhead than Playnite. · onyxlauncher.co.uk, 9 Oct 2026
Windows and Linux
The site offers a Windows installer and says Linux builds are in testing as AppImage, .deb, and .rpm packages. · onyxlauncher.co.uk, 9 Oct 2026

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