The feature list of WinAce includes:
- compression of the following formats: ACE, ZIP, LHA, MS-CAB, JAVA JAR
- decompression of: ACE, ZIP, LHA, MS-CAB, RAR, ARC, ARJ, GZip, TAR, ZOO, JAR
- multi-volume (disk spanning) archives for ACE, ZIP, CAB
- self-extracting archives (SFX) for ACE and ZIP
- password encryption & recovery records for data protection
- Integrity check for ACE, ZIP, LHA, MS-CAB, RAR, ARC, ARJ, GZip, TAR, ZOO, JAR
- Repair functionality for ACE and ZIP archives
- Authenticity verification for ACE archives
- comment files in HTML, ANSI or ASCII for ACE- and ZIP-Archives
- full command line access (compatible with DOS ACE)
- detailed information for all archive types
- Quickviewer for graphic files, Word Documents, HTML pages and ASCII files
- full drag&drop support
- complete file-management (copying, moving and deleting of files and directories)
- optimization of existing archives
- access to your archives in Windows Explorer and via the context menu (shell extension)
- table of contents in the "Properties" panel of ACE and ZIP files (shell extension)
... and so much more!

Changes in WinAce 2.65:
- fixed some small miscellaneous bugs