Irony Mod Manager vs Prismo

Irony Mod Manager is a free, open-source alternative to the official Paradox launchers. It supports Crusader Kings III, Europa Universalis IV and V, Hearts of Iron IV, Imperator: Rome, Star Trek: Infinite, Stellaris, and Victoria 3 on Linux, macOS, and Windows. Mods are imported manually, organized into profiles, and assigned deterministic load order according to each game’s rules. Conflict handling differs by title: Stellaris has full solver support, HOI4 has analysis-only support, and other listed games use merging. Multiple merge strategies are available, and the manager can generate patch mods during conflict resolution. An external editor or merge/diff tool can be configured. Official binaries are published on GitHub Releases. Windows and Linux update downloads are signature-verified; macOS updates require manual replacement. The macOS Finder bundle is unsigned and unnotarized. Windows 7 is no longer officially supported, and mods cannot be uploaded to Steam Workshop.

Prismo publishes Zephyr, a free, open-source desktop mod manager for Linux, macOS, and Windows. Zephyr lets users browse, install, update, and organize mods for about 200 games. Built-in access combines Thunderstore and CurseForge browsing. Users can create and switch between profiles for each game, then share a profile through a code or link. Optional cloud synchronization uses Discord sign-in to synchronize profiles across devices. The app also includes an Archipelago multiworld randomizer with a bundled Python runtime, a configuration editor, gamepad navigation, and seven languages. Without sign-in, profiles, configuration files, and preferences remain on the device, while public mod metadata is requested anonymously. Cloud-enabled profile archives and metadata are stored with Prismo Studios’ hosting provider in France. Zephyr is licensed under GPL-3.0, with source code on GitHub. Installers include Windows .exe, Linux AppImage and .deb, and macOS .dmg files.