CKAN vs Modrix

CKAN helps Kerbal Space Program players find, install, and manage mods through a client connected to an online registry. Users can refresh the registry and search by mod name, identifier, author, or relationships. CKAN uses mod metadata to select mods for the game version, install dependencies, and identify conflicts or incompatibilities. By default, a mod must be marked compatible with the exact game version; users can choose additional compatible versions, and an All filter can display incompatible mods. The client provides graphical, console, and command-line interfaces. It runs on Windows, macOS, and Linux, with installation options for several Linux distributions. The executable can manage game installations from any folder; placing it in a game folder supports portable use. Mod authors can contribute or correct metadata. CKAN is open source and MIT-licensed, and is free. On macOS 10.15 and later, the console interface is the default because the graphical interface depends on a 32-bit WinForms application in Mono.

Modrix is a game mod manager with graphical, terminal and command-line frontends built over one shared engine. It is presented as an open-source alternative to Vortex and has built-in support for 86 games, with additional games available through a community plugin registry. A browser extension passes Nexus Mods download links and session cookies to Modrix so it can download and stage files without a Nexus API key. On Linux, the project describes Steam and Proton as first-class options and says Modrix usually detects Steam-installed games for a one-click add-and-switch action. Deployment uses hardlinks where possible, backs up files before overwriting, journals changes for crash recovery and supports reversing deployments. Modrix surfaces conflicts between enabled mods and offers rules and per-file overrides to resolve them. The CLI supports scripting and JSON output, and an MCP server exposes engine functions as tools for agents. The project states that it has zero telemetry and that Lua game plugins are sandboxed. It is GPL-2.0-only and costs nothing.