ModNest ✨
Mods & CC organizer for The Sims 4
ModNest is a Windows 10 & 11 app that organizes your Sims 4 Mods folder for you. It sorts CC by what's inside each file, imports new downloads, moves broken and duplicate files out safely, and finds the mod that stops your game from starting. It never deletes anything.
‼️ Windows 10 & 11 only. Mac coming soon. ‼️
What ModNest does
Organize
Sorts all your CC automatically: hair, makeup, clothes, shoes, accessories, pets, Build/Buy, gameplay mods and more. It reads what's inside each .package file, not just the name. It also grabs new downloads from your Downloads folder and unpacks .zip, .rar and .7z files.
Preview
See where everything would go before anything moves. Nothing is moved, imported or deleted.
Undo last run
Puts everything from the most recent run back exactly where it was.
Quarantine
Broken, duplicate and game-breaking files are moved to a Quarantine folder outside Mods. When a newer copy of a mod arrives, ModNest swaps it in and keeps the old one in Quarantine\Replaced Versions.
Find Bad Mod
Game says "Unable to start"? Pick the last day it started fine. ModNest halves the suspects each launch until it finds the file causing it.
My Mods
Every mod and CC file with its picture. Search by name, filter by CAS, Build/Buy, Gameplay, Script or Turned off, sort by newest or biggest, rename, or move a file to Quarantine.
Mod Sets
Save which mods are off as a set, like "Legacy save" or "Build only", and switch between sets in one click. Mods you add later stay on.
Check my saves
See which CAS and Build/Buy CC your saves and saved Sims actually use, and which you never use. Turn the unused ones off to make Create-a-Sim load faster.
Health check
Finds why mods might not show up: mods switched off in the game, script mods in too-deep folders, packages more than 5 folders deep, zips left in Mods, and files that don't belong there.
Tools
Move to Tray moves downloaded Sims and lots out of Mods into your Library. Back up your whole Mods folder to a zip, clean out empty folders, and clear the thumbnail cache.
It never deletes anythingPreview firstUndo anytime
Requirements
| Windows | Windows 10 or 11 |
|---|---|
| Mac | Not yet. Coming soon |
| Game | The Sims 4, any packs |
| Needs | .NET Framework 4.8 (already on Windows 10 May 2019 Update and newer, and on every Windows 11 PC) |
| Download size | About 0.6 MB. No ads |
| Price | $7.99 Patreon tier, updates included |
Close The Sims 4 before you organize. ModNest shows a friendly reminder if the game is still open.
Version history
| Version | Date | What's new |
|---|---|---|
| 1.1 | My Mods with pictures, turn mods on/off, Mod Sets, Check my saves, Health check, Move to Tray, Back up, and more tools. | |
| 1.0 | First release: Organize, Preview, Undo, Find Bad Mod, duplicate and update handling, Send Feedback. |
Find Bad Mod
If The Sims 4 shows "Unable to start" after you added new CC, open Find Bad Mod and pick the last day your game started fine. ModNest moves everything added after that out of your Mods folder for a bit, then halves the suspects every time you launch the game. In a few launches it finds the one file causing it, moves it out, and puts everything else back.
Questions
How much does ModNest cost?
ModNest is a members' download in the $7.99 tier of my Patreon (KatieMartin236). Every update is included, so you never pay again for a new version.
Does ModNest work on Mac?
Not yet. ModNest works on Windows 10 and 11 only. A Mac version is coming soon.
Will ModNest delete my mods?
No. ModNest never deletes anything. Broken and duplicate files go to a Quarantine folder, old versions of updated mods are kept in Quarantine\Replaced Versions, and Undo last run puts everything back.
Windows says "Windows protected your PC". Is ModNest safe?
That message is normal for new apps from small creators that aren't code-signed yet. Click More info, then Run anyway. Preview shows every move before anything happens, and ModNest never deletes anything.
I used a different mod manager before. Will ModNest work?
Yes. Mods another manager turned off (.packageOFF and .ts4scriptOFF files) show up in My Mods as "off". Just click Turn on.