BMI - Bethesda Mod Installer

BMI — Bethesda Mod Installer

Free, open-source mod manager and installer for Bethesda games, In beta phaseBMI (Bethesda Mod Installer) is a free and open-source mod manager for Skyrim Special Edition, Skyrim Anniversary Edition, Fallout 4, Fallout: New Vegas, Fallout 3, Oblivion, Starfield and Morrowind. Download, install, sort and play with mods from Nexus Mods in one place — a lightweight alternative to Vortex and Mod Organizer 2 (MO2).

📢 Join the community on Discord!

The easiest and fastest way to talk to me is through my Discord server.

There you can:

• []Ask me questions directly[/]

  []Report bugs or problems[/]

  []Suggest ideas and improvements[/]

  []Find out about upcoming updates[/]

See you there! 😄

★ Key features

• []Official Nexus login (OAuth) — sign in with your Nexus account. No API keys to paste.[/]

  []One-click downloads via the standard

  nxm://protocol ("Mod Manager Download"), just like Vortex/MO2. Automatic downloads with Premium.[/]

  []MO2-style mod manager — drag-and-drop load order and overwrite priority, category separators, per-mod file view, hide/show files, notes, plugin info (masters, ESL) and full profiles.[/]

  []Clean-Data VFS mode — virtualizes your mods at launch without copying them into the game's Data folder, keeping it clean (MO2-style USVFS). Fully reversible.[/]

  []FOMOD installer wizard — pick options manually or auto-install recommended.[/]

  []Collections — paste a Nexus collection link and queue every mod at once.[/]

  []Dependency resolver — required mods are downloaded first.[/]

  []Force game language — keeps the game in your language (

  sLanguage) on every launch.[/]

  []Platform variant filter — warns and blocks the wrong GOG/VR files on a Steam install (a common cause of SKSE errors).[/]

  []External tools — launch Nemesis, xEdit/SSEEdit, DynDOLOD or Synthesis from the app.[/]

  []One-click Play with your Script Extender (SKSE64, F4SE, SFSE…).[/]

  []Multi-language UI: English, Español, Français, Deutsch, Italiano.[/]

🎮 Supported games

Skyrim Special Edition

Skyrim Anniversary Edition

Skyrim (Legendary)

Fallout: New Vegas

Oblivion (original)

💾 Requirements

• []Windows 10 or 11 (64-bit).[/]

  []A free Nexus Mods account.[/]

  []The game installed (Steam, GOG or Game Pass).[/]

  []No Python or extra software — single portable

  .exe.[/]

🚀 How to use

• []Run BMI.exe (portable, ~130 MB).[/]

  []On the Explore Nexus tab, click Sign in with Nexus (official OAuth login).[/]

  []Set your game's Data folder (auto-detected on Steam).[/]

  []Add mods: paste a mod/collection URL, browse Nexus in-app, or use "Mod Manager Download".[/]

🆚 Why BMI?

A free, no-nonsense mod manager: the one-click downloads and clean-Data virtualization of MO2, the simplicity of Vortex, plus automatic translations and a platform-variant filter. Open-source and lightweight.

📜 Open source & credits

• []Source code: github.com/carbollo/BMI[/]

  []License: GPL-3. 0.[/]

  []Virtual file system: powered by USVFS, from the Mod Organizer 2 team (GPL-3. 0). Full credit to them.[/]

⚠️ Antivirus note

As with MO2 and other mod managers, some antivirus software may flag the compiled

.exeor the USVFS component as a false positive (due to the file-virtualization hooks). BMI is open-source — you can review the code on GitHub.