Corkscrew vs Zephyr

Corkscrew is a free, open-source mod manager for Linux and macOS. It supports Skyrim and lists Fallout 4 support; Starfield is described as coming soon. Its built-in mod source access includes Nexus Mods downloads using OAuth 2.0 with PKCE, NXM links and Nexus SSO. Users can install Nexus mods with one click, add archives, run FOMOD wizards and reorder mods by dragging. Profiles let users switch between vanilla, lightly modded and large-plugin setups. Plugin tools include LOOT sorting, master validation, conflict detection and dependency views. Corkscrew also supports Wabbajack modlists through a seven-phase installation pipeline. Custom SSE Engine Fixes patches cover more than 60 crash sites and deploy automatically. The project requires no account and uses no telemetry. It is licensed under GPL-3.0, and its page lists a 17 MB download. Support links include GitHub, Issues and Support on Ko-fi.

Zephyr is a free desktop mod manager for browsing and installing mods, then switching between game mod profiles. It supports about 200 games out of the box and combines Thunderstore and CurseForge browsing in one search. Mods are deployed by copying them, and users can share a profile code or link so friends can reproduce a setup. Optional cloud sync requires signing in with Discord and enabling the feature. Zephyr also includes an Archipelago multiworld randomizer with Python bundled, a BepInEx configuration editor, and gamepad navigation throughout the interface. Customization includes seven themes, custom fonts and colors, and seven language options. The app is available for Windows, macOS, and Linux, and is distributed under the GPL-3.0 license. The maker says that without sign-in, personal data stays on the device and mod metadata requests are anonymous. With cloud sync enabled, profile archives and metadata are stored with the maker's hosting provider in France. The Windows build is not code-signed and the macOS build is not notarized.