7Zip is an open source archiving utility currently supporting only Windows platform. It fully supports 7z, ZIP, GZIP, BZIP2 and TAR formats.

Kopano is an open-source groupware application suite originally based on Zarafa.

Collexio enables its users to share ideas, stories, knowledge, and passions with their friends, family, clients, and social networks.

PeaZip is an open source file and archive manager.

Zipware is simple and free zip software for Microsoft Windows that supports all major archiving formats.

Benubird PDF is a document organizer with support for tags and collections.