A free desktop app that turns your mods folder into a proper library. For The Sims 1, 2, 3, 4, Medieval and the SimCity series, on Windows, macOS and Linux.
Also for other platforms
Every look is drawn after a game's own interface: colors, logos, the shape of every button, even the classic Sims 1 UI sounds. Pick one and it stays put, whichever game you're managing. Try them right here: this page re-themes with them, and every screenshot is the real app.
The Sims 4 library in the app's default mint, flat and modern like the game. The whole page just re-themed with it.
Stop renaming files by hand and guessing which download broke your game.
The app looks inside your .package files and pulls out the actual artwork, plus a breakdown of what's inside: CAS parts, objects, textures, tuning.
Flip a toggle to turn any mod off without deleting it. The file is safely renamed so the game just skips it; flip it back any time.
Installed the same mod twice, or kept an old version next to the new one? Both get badged. The app also looks inside your packages and flags the ones that override each other's resources, the real reason CC breaks.
Drop files or whole folders onto the window and they land in the right place. .zip, .rar and .7z downloads are unpacked for you, folder structure kept, readmes and screenshots left out. The Sims 3's own .sims3pack format works too.
Localized folder names ("Los Sims 3"), the Ultimate Collection, OneDrive-moved Documents, multiple installs: it finds them, or you can point it anywhere.
No mods folder yet? One click creates it with the files the game needs, like the Resource.cfg framework The Sims 3 requires before mods work at all.
Search your whole library, filter by category, switch between grid and list, and watch live totals for enabled, disabled and conflicting mods.
Beside our own listings, The Exchange carries the sc4pac channels: Simtropolis and SC4Evermore, credited to the project that keeps them. A download brings everything it depends on, or nothing at all.
See every household, every Sim, and the world's stats, read straight from the save file.
A lot dropped in your Mods folder sits there forever and the game never looks at it. These go into the game's own Tray or Library instead, and they're shown as the pictures the game made of them.
Expansions, game packs, stuff packs and kits, each with its own artwork and what it takes up on disk. The Sims 4 and The Sims 3 can switch one off without moving a single file; the other games list what you have.
Free, with no account and no installer tricks. Pick your platform:
Latest release
Recommended for most people. Windows SmartScreen may warn because the app isn't code-signed yet; choose More info → Run anyway.
Download .exeNo install needed. Extract the zip anywhere and run sims_mod_manager.exe.
Download .zip
Signed & notarized by Apple. Open the .dmg and drag the app into Applications, then open it like any other app.
Download .dmg
Extract the folder and run TheSimsModManager.sh. Works with Wine/CrossOver game installs too.
Download .tar.gzYou'll need 64-bit Windows 10 or newer, macOS 10.15 Catalina or newer, or a recent 64-bit Linux distro.
Every version is built automatically for all three platforms, and the app lets you know when an update is out.
Each one keeps its mods somewhere different. The app knows where.
Custom buildings go in the game's own Buildings folder, which is flat: a file in a subfolder never loads, and the app says so.
Mods live in the install folder's Downloads directory, not in Documents. The app knows the difference.
Both Plugins roots, with load order left exactly as a download arrives. Anything sc4pac installed is left to sc4pac.
Handles the standard EA Games Documents folder and the Ultimate Collection's own folder name.
.SCSPack content, filed into the Import folder the game's own package installer uses.
Needs the Resource.cfg mod framework before any mod loads; the app creates it for you.
Mods live in the install folder, not Documents, and need a Resource.cfg; the app sets both up for you.
Reads SimCityUserData > Packages inside the install. It sits under Program Files, so Windows may ask for administrator rights.
Uses the standard Mods folder. Just remember to enable CC & script mods in the game's options.
Every location is just a smart default; you can point any game at any folder in Settings, and hide the ones you don't play. The app was built so any moddable game can be added.
Yes. The app is free to download and use, and there's no account, no ads, and no "pro" version. If it saves your Saturday, you can buy the developer a coffee, but that's entirely optional.
Disabling a mod only renames the file (adding a .disabled suffix) so the game skips it; nothing is ever deleted, and re-enabling restores the exact original file. Your saves are never touched.
The app isn't code-signed yet (certificates are expensive for a free project), so SmartScreen shows a warning on first run. Choose More info → Run anyway. Every download is built and published automatically by GitHub's own servers, so nobody can slip anything into it along the way.
Yes. It detects localized user folders ("Los Sims 3", "Die Sims 2"…), the Sims 2 Ultimate Collection, Documents folders moved by OneDrive, and multiple installs of the same game. If all else fails, you can point it at any folder manually.
Right inside the app: open Settings → Report a bug (or Suggest a feature) and your app version, OS and current game come prefilled. You can also drop a message on Tumblr.