Why not take these open source softwares and give them Comodo Style :}
-Pidgin-IM-instant messaging
-Mozilla Thunderbird-Email Client
-Gnucleus-Peer to Peer Filesharing
-X-Chat 2- IRC
-Chatzilla-IRC
-TrueCrypt-Encryption
-KeePass-Password Safe
Just food for thought :THNK