Software every cheating spouse should have! (Unless you want to get caught).
If you are communicating with your lover via cell phones, you can get hacked, and thus busted. If you are communicating with your lover using Skype, WebEx, or Facetime, you can get hacked, and thus busted. If you want to get "virtual freaky" with your lover, or want to IM securely, you will want to use the ultra secure VIA3 from http://www.via3.com/, where you have SECURE video, audio (VOIP), file sharing, IM, and chat that the NSA couldnt decode.