FModel

Free plan Windows

What FModel is

FModel is free, open-source Windows software for exploring and extracting content from Unreal Engine games. It browses game archives, including .pak, .utoc, and .ucas formats, and can compare archive states to identify new or modified packages. Encrypted archives require an AES key. The software parses more than 30 asset types, displays their properties, and provides image, audio, and 3D viewing for supported assets. Users can inspect package details in formats such as JSON, INI, XML, and TXT, and save loaded models as PSK files. Viewers cover meshes, maps, animations, and sounds, though the wiki says animation preview is unavailable; AnimSequence exports can be saved as PSA. Batch export sessions support raw data, models, worlds, textures, and animations. The August 2026 release added USD export for meshes, animations, materials, and worlds, plus WebP export and texture quality settings. Whole-level export is currently USDA-only, and sockets or attachments may not always be placed correctly. FModel is a portable x64 ZIP download requiring .NET 10.0 or later; some games may need up to 2 GB of free RAM.

Who it suits

FModel suits Windows users who want to inspect or export assets from Unreal Engine game archives. It may also suit contributors interested in open-source software or users who need batch exports.

What it does well

Free, open-source software.
Parses more than 30 asset types.
Compares archive states for changed packages.
Batch export sessions cover several asset types.
Supports image, audio, and 3D viewing.

What to know first

Available only for Windows.
Encrypted archives require an AES key.
Requires .NET 10.0 or later.
Whole-level export is currently USDA-only.

Limits

FModel is free, with no payment required. World export is currently USD-only for meshes, animations, materials, and worlds, while whole-level export uses USDA; sockets or attachments may not always be placed correctly. Animation preview is unavailable, though AnimSequence exports can be saved as PSA.

Plans

Plan	Billed and limits	Price
FModel	Freeware; no payment required	Free

As fmodel.app lists them, read 5 Oct 2026. The maker's own page has the final word.

Getting started

Download FModel.zip from the latest release assets.
Extract the ZIP archive and run the portable x64 executable on Windows.
Make sure .NET 10.0 or later is available.
Load an archive; for encrypted archives, load an AES encryption key.

Verdict

FModel offers broad archive inspection and export tools for Unreal Engine game content at no listed cost. Check its Windows and .NET requirements, and note the stated animation-preview and world-export limits.

Questions

How much does FModel cost?

FModel is freeware; its listed plan is free, with no payment required.

Which platforms does FModel support?

FModel is available only for Windows as a portable x64 executable in a ZIP archive.

What does FModel require?

It requires .NET 10.0 or later. Some games may require up to 2 GB of free RAM.

Can FModel open encrypted archives?

Yes. Encrypted archives require an AES encryption key to be loaded.

Is FModel open source?

Yes. The project says its code is open and reusable under the conditions in its license.

Can FModel preview animations?

The wiki says animation preview is unavailable. AnimSequence exports can be saved as PSA.

Facts from FModel's own pages

Animation limit: The wiki says animation preview is not available and AnimSequence exports can be saved as PSA. · github.com, 5 Oct 2026
Archive browsing: It can display game archives, including encrypted archives, and compare archive states to show new or modified packages. · github.com, 5 Oct 2026
Asset parsing: The project’s site says FModel can parse more than 30 types of assets and display their properties. · fmodel.app, 4 Oct 2026
Asset previews: The application has image, audio, and 3D viewing capabilities for supported package types. · github.com, 5 Oct 2026
Batch exports: The August 2026 release added an Export Session window for batching raw data, model, world, texture, and animation exports. · github.com, 5 Oct 2026
Community support: The wiki directs users to its Discord server for troubleshooting and community support. · github.com, 4 Oct 2026
Decryption requirement: Encrypted archives require an AES encryption key to be loaded. · github.com, 5 Oct 2026
Export limits: The August 2026 release notes say world export is currently USD-only, and sockets or attachments may not always be placed correctly. · github.com, 4 Oct 2026
Free plan: Yes · github.com, 20 Sept 2026
Installation: The installation guide instructs users to download FModel.zip from the latest release assets. · github.com, 5 Oct 2026
Loading modes: FModel can compare two states of the same game to show newly detected or modified files. · fmodel.app, 4 Oct 2026
Model export: Loaded models can be saved as PSK files for use in programs such as Blender or 3DS Max. · github.com, 5 Oct 2026
More export formats: The August 2026 release added USD support for meshes, animations, materials, and worlds, plus WebP export and texture quality settings. · github.com, 5 Oct 2026
Open source: The project says its code is open and reusable under conditions in its license. · github.com, 5 Oct 2026
Package inspection: FModel can extract and export game packages and show their properties in formats including JSON, INI, XML, and TXT. · github.com, 5 Oct 2026
Project history: The maker says it has been building FModel since March 5, 2019. · github.com, 4 Oct 2026
Purpose: FModel is freeware for exploring Unreal Engine game archives. · github.com, 5 Oct 2026
Recent export features: The August 2026 release adds USD export for meshes, animations, materials, and worlds, plus WebP export and texture quality settings. · github.com, 4 Oct 2026
Related API: The maker’s GitHub organization lists a public REST API used for FModel-related projects. · github.com, 4 Oct 2026
Security statement: The project wiki states that FModel does not contain malware, spyware, advertisements, or unwanted third-party programs. · github.com, 5 Oct 2026
Source availability: The project welcomes community contributions through issues and pull requests. · github.com, 4 Oct 2026
Supported games: The 2025 release notes say supported games expanded substantially during the year. · github.com, 5 Oct 2026
Supported platform: FModel is available only for Windows as a portable x64 executable distributed in a ZIP archive. · github.com, 4 Oct 2026
System requirement: FModel requires .NET 10.0 or later, and some games may require up to 2 GB of free RAM. · github.com, 4 Oct 2026