.UC2 ファイル拡張子

UltraCompressor II and UltraExpander II were DOS and Windows compression and decompression programs released in 1994. Users could use UltraCompressor II to compress and store files in UC2 archives, in the interest of saving hard drive space or more easily sharing files with others. They could then use UltraExpander II to extract files from UC2 archives.

Notably, UltraCompressor II analyzed files' content before compressing them, allowing it to compress files more compactly than some of the era's other compression programs. However, this extra analysis increased UltraCompressor II's compression times.

In Windows, you can attempt to install UltraExpander II in a DOS emulator, such as DOSBox, and use it to decompress your UC2 archive.

In Linux, you can use the free program unuc2 to decompress your UC2 archive.