| WinHKI HKI1 Compressed Archive Format | |
| N/A | |
| Ads |
Windows
| .a00 | Split Multi-volume ARJ Compressed File Archive (part 2) |
| .a01 | Split Multi-volume ARJ Compressed File Archive (part 3) |
| .a02 | Split Multi-volume ARJ Compressed File Archive (part 4) |
| .ace | WinACE Compressed Ace Archive Format |
| .alz | ALZip Compressed Format |
| .ar | Linux/Unix Command Library Format |
| .arc | ARC Lossless Data Compression And Archive Format |
| .arj | ARJ Compressed Archive Format |