FModel vs Runa

FModel is free, open-source Windows software for exploring and extracting content from games made with Unreal Engine. It can browse game archives, including encrypted ones, and compare two archive states to identify new or modified packages; encrypted archives require an AES key. It parses more than 30 asset types, displays their properties and offers image, audio and 3D viewing for supported content. Package properties can be shown in formats including JSON, INI, XML and TXT, and models can be saved as PSK files. An Export Session window supports batching raw data, model, world, texture and animation exports. The August 2026 release added USD export for meshes, animations, materials and worlds, plus WebP export and texture quality settings. Whole-level export is in USDA format, and sockets or attachments may not always be placed correctly. FModel is distributed as a portable x64 executable in a ZIP archive. It requires .NET 10.0 or later, and some games may require up to 2 GB of free RAM.

Runa is a free terminal file manager written in Rust for Linux, macOS and Windows. Its keyboard-driven interface provides dual-pane browsing, a preview pane, tabs, and actions for moving, filtering, copying and renaming files. Keybindings, colors and layout can be changed in a TOML configuration file. The project describes a multithreaded engine with dedicated worker threads for input/output, previews, search and file operations. An optional fd installation enables recursive fuzzy search across files and folders; without fd, Runa remains usable but cannot perform that search. The optional bat tool adds syntax-highlighted previews, while built-in preview methods work without it. Installation is available through Cargo, Arch Linux AUR, Homebrew, Scoop, precompiled binaries or source builds. Releases from v0.5.11 are described as immutable and include attestations and SHA256 checksums. Runa is dual licensed under MIT or Apache-2.0 and remains under active development.