This is what I found on picozip:

PicoZip is an award winning file compression utility for Microsoft Windows users. Its intuitive user interface is extremely easy to use, while its wide ranging support for most file compression formats and comprehensive feature set makes PicoZip the only archive utility you will ever need.

PicoZip is compatible with Zip files created by WinZip, PKZip and others.

Supports ACE, ARC, ARJ, BH, CAB, GZ, JAR, LHA, LZH, RAR, TAR, TGZ, WAR, Z, ZIP, ZOO, MIM, XXE and UUE file formats
Simple and intuitive user interface
Seamless Windows integration
Fast and easy automated backup
Integrated archive files explorer
Powerful batch features to automate repetitive tasks
Easy favorite archive folders management
Strong 128-bit and 256-bit AES encryption
Create self-extracting archives
Repair ZIP archives
Split ZIP archives
Convert archive formats
Flexible filtering of files in archives
Integrated email support
Virus scanner support
Quick access tray tool
Customizable look using toolbar skins
Recover password from Zip files
Lifetime FREE upgrade
Supports Windows 98/98/NT/2000/ME/XP

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