BSAOpt vs UAssetGUI
BSAOpt
github.comUAssetGUI
github.comSide by side
| Figure | BSAOpt | UAssetGUI |
|---|---|---|
| Price from | Free | Free |
| Free plan | Yes | Yes |
| Free trial | — | — |
| Open source | — | — |
| Windows | Yes | Yes |
| Linux | — | Yes |
| Plans published | 1 | 1 |
| Spec score · Game Modding Tools | 7.8 (#9) | 7.8 (#12) |
| License | The source file states it is available under either the Mozilla Public License 1.1 or GNU Library GPL version 3 terms. | The project is distributed under the MIT License, which permits use, copying, modification, distribution, sublicensing, and sale subject to its stated conditions. |
| Purpose | BSAopt manages and recompresses BSA files, treating them like directories so files inside can be addressed easily. | UAssetGUI is a tool for low-level examination and modification of Unreal Engine game assets by hand. |
Plans
In their own words
BSAOpt
BSAOpt is free, open-source Windows software for managing and recompressing BSA archives. It presents archive contents like directories, allowing files inside to be addressed directly, and can deduplicate files. Copy, Pack, Unpack, and Convert operations depend on the selected input and output. The listing says compression is roughly 5% better for files and 20% better for WAV files. Supported formats are BSA and ZIP, with archive extraction and mod packaging included. Version history lists Morrowind support, Fallout compatibility, and Xbox-type archives. Version 1.6.3 added recognition for XWM, FUZ, OGG, GID, and PEX files. Optional logs and a broken-header dialog can attempt recovery from corrupt BSAs. It is partially multi-threaded, supports 32-bit and 64-bit Windows Vista or later, and requires administrator execution when UAC is enabled. The listed version is 1.6.3, updated 14 January 2013.
UAssetGUI
UAssetGUI is a desktop tool for examining and modifying Unreal Engine game assets by hand. It supports .uasset, .umap, .usmap, .utoc and .ucas files, as well as JSON. Windows is supported directly; Linux setup runs the Windows executable through Wine. Command-line arguments can export and import UAssetAPI JSON without opening the graphical interface, and custom C# scripts can extend the program. Portable mode, available in v1.1.0 or later, keeps configuration and saved mappings in a Data folder beside the executable. The v1.1.0 release added opening and saving .utoc and .ucas containers through built-in retoc integration. Pre-built binaries and an experimental build are available from the repository’s Releases page. Release notes report support for Unreal Engine 5.6 and 5.7, while earlier notes identify limits for some Unreal Engine asset support. UAssetGUI is free under the MIT License, which provides the software without warranty. The maintainer announced retirement from UAssetGUI development, though future contributors or releases might follow.