NASLite is a Network Attached Storage (NAS) server operating system designed to transform a basic computer into a dedicated file server. Utilizing highly optimized versions of Samba, uCLibc, BusyBox, and various other Linux tools, it provides SMB/CIFS, FTP, or NFS filesystem support. It accommodates multiple client OSes: Windows, Mac OS X, and Linux. NASLite offers SMART disk monitoring and large file support, and is incredibly easy to install and administer.
DeskNow is a complete mail, calendaring and collaboration server. It offers full mail support, an Ajax Web interface, group calendaring with iCal, meeting planning, an Outlook connector, SyncML, Jabber instant messaging, RSS feeds, document management with WebDAV, message boards, address books, and mailing lists. User management includes virtual domains, user groups, and access control lists for all shared objects. DeskNow also supports server clustering, ActiveDirectory, and LDAP authentication, and can automatically import accounts and emails from any existing mail server.