Lots of tools to help you catch a wife cheating or catch husband cheating including the following websites.
http://www.spokeo.com -find hidden profiles of people online
http://www.cellphone-spybubble.info - spy on anyones cell phone
http://www.mobiletelephonespy.info- more info on cell phone spying
http://www.phonecalltrace.info- find the name and address belonging to a phone number even if their info is unlisted or unpublished
http://www.trickstocatchcheater.com- tons of tips and secrets to catch cheater
http://www.phonespoofcard.info- make your phone number and name on their caller ID say anything you want.