Onyx

onyxlauncher.co.uk

What it is

Onyx combines games you already own into one launcher and library.

From onyxlauncher.co.uk's own pages, read 9 Oct 2026.

Data plate

Price: Free to use
Free plan: Yes
Free trial: No
Runs on: Linux, Windows
Open source: No
Website: onyxlauncher.co.uk
Accounts: The site says no account is required to use Onyx.
Accounts and subscription: The site says no account is required and there is no subscription.
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.
Community and support: The site links to Discord for chatting with developers and users, Reddit for discussion and updates, and Ko-fi for contributions.
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.
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.
Customization: Onyx settings include performance and interface options, while view personalization includes scaling, spacing, and accent colors.
Launcher integrations: The site names Steam, Epic, GOG, and Xbox among the libraries Onyx can import, with other sources also supported.
Checked: 9 Oct 2026

Claim its page to correct a fact and see how many players open it.