Modrex Mod Manager

Browse ModWorkshop and Nexus Mods, install in one click, and launch the game modded or vanilla from the same window.

Free and open source. v0.15.2, released Sep 23, 2026.

Browse mods2 / 5
Browse mods2 / 5
Choosing a game in Modrex: PAYDAY 3, PAYDAY 2, PAYDAY: The Heist, Crime Boss and RAID
Browsing ModWorkshop and Nexus Mods inside Modrex
The Modrex installed mods list, each mod with its own switch
The Modrex news tab showing the latest posts for the active game
Modrex application settings: language, accent color, updates, usage analytics and Discord Rich Presence

Features

Launch modded or vanilla

Launch with enabled mods or use Launch without mods. Ready or Not uses Safe Mode for Pak mods. Other games temporarily hide managed mods and restore them when the game exits.

The Launch without mods and Launch modded buttons in the Modrex top bar

ModWorkshop and Nexus Mods in one place

Search both sites with categories, tags and sorting, read the mod page, and install from the result. Nexus lists 6,076 mods for these games.

Browsing ModWorkshop mods in Modrex, with Install buttons on each result

Recognizes mods you already have

Modrex matches the files in your game folder against 29,395 known mods, so mods you installed by hand are detected too.

The Modrex installed mods list, each mod with its own switch

Why Modrex

ModrexModrexVortexVortexMod Organizer 2MO2
Browse mods in the appYesPartly, CollectionsNo
Installs mods from ModWorkshopYesNoNo
Installs SuperBLT and UE4SS for youYesPartly, Some gamesNo
Native Linux appYesNoNo
One-click launch without modsYesPartly, Via profilesYes
Installs mods from Nexus ModsYesYesYes
Supported games6500+45+
Several mod setups per gameNoYesYes
Shareable mod listsNoYesPartly, Wabbajack
Leaves the game folder untouchedNoPartly, HardlinksYes

Download

Modrex updates itself after the first install.

Windows

Or with winget

winget install modrex

Linux

Or with the install script

curl -fsSL https://modrex.net/install.sh | sh

Works with Steam, Epic Games and the Xbox app on Windows, and Steam on Linux. See the installation guide.

v0.15.2

Changed

  • Mods that download from outside ModWorkshop no longer appear in the updates list.

Fixed

  • Fixed Update in the updates list opening the mod's page instead of installing the update.
  • Fixed Reinstall swapping a mod's chosen file for a different one.
  • Fixed updating a mod with several paks leaving the old paks behind or asking which paks to install again.
  • Fixed updating a PAYDAY 2 or RAID mod leaving files from its old version behind.
  • Fixed an already updated mod staying in the updates list.
  • Fixed a mod's Downloads tab showing only its first 20 files.
v0.15.1

Added

  • ModWorkshop mod links inside a mod's description, changelog, file notes and instructions now open that mod's page in Modrex instead of the browser.
  • The back mouse button, Alt+Left and the keyboard Back key now leave a mod's page.

Fixed

  • Fixed update progress and restart controls disappearing from the update popup.
  • Fixed window resizing dismissing the update popup.
  • Fixed global settings reopening the last game's settings.
  • Fixed ModWorkshop update detection and restored identification index refreshes after an upstream API change.
  • Fixed Browse hiding category and tag filter loading failures when a request fails.
v0.15.0

Added

  • Added Italian as a language option for the app's interface.
  • Added Simplified Chinese as a language option for the app's interface.
  • Added a viewer for browsing the contents of installed Unreal Engine pak mods.
  • Added an optional Windows setting to start SISR before games launched from Modrex, with setup and launch-failure warnings.
  • Added a setting to choose the app's accent color.
  • Modrex now names which UE4SS release is installed, and can replace it with another or remove it. Both say what they change and what they keep first.

Changed

  • Startup no longer runs the Microsoft Store lookup for a game more than once at a time.
  • The game picker no longer changes which copy of a game is selected while working out which games are installed.
  • PAYDAY 3 no longer asks for the -fileopenlog launch option, which the game stopped reading in Update 3.8.

Fixed

  • Fixed installing a file from the Manage Files list picking the wrong one when a mod's archive holds two files with the same name in different folders.
  • Fixed installing the wrong file from an archive that contains two entries whose names look the same, such as a mod packaged with both forward and back slashes in its paths. Each entry you pick now installs its own contents.
  • Fixed Nexus Mods sign-in and website mod downloads not reaching Modrex on Linux.
  • Fixed enabling or disabling a mod being reported as done when its files could not be moved, such as while the game is running.
  • Fixed a mod being left split between folders when its .ucas or .utoc file could not be moved with its pak.
  • Fixed mod folders and load order being lost when Modrex could not read its saved mod list.
  • Fixed dragging a mod's archive onto Modrex moving that mod out of the folder it was filed in, unlike installing it from its page.
  • Fixed uninstalling a PAYDAY 3 mod deleting another mod's files.
  • Fixed one UE4SS release reading as installed on another release's page, leaving no way to switch between them.
  • Fixed installing UE4SS leaving an older one hooked into the game beside it.
  • Fixed your own Lua mods being left in the old folder when a UE4SS update moves where the loader reads them.

Security

  • Opening the log from Settings now opens the log file itself instead of writing a copy to a predictable name in the system temporary folder, which another program could have redirected at one of your own files.
  • Cleanup after installing a .pdmod file or a loose non-archive file can no longer reach outside the files Modrex staged, and refuses a link rather than following it out of the temporary folder.
  • Archives waiting on a choice, such as picking which files to install, are now tracked by Modrex itself rather than by a file path passed back from the interface, so only the archive Modrex staged can be opened or removed.