This is one of the first pieces of software I immediately reinstall after I buy a new computer or reformat my drive. I don't think it has ever crashed on me. I installed a Nortel phone system in my office. It's the best office telephone system on the market, yet compared to what you can do with it, PhoneValet, kicks butt. I am rather technically adept and am always an early adopter of new technologies, but I haven't been able to get my Nortel's features figured out or stable. I am about ready to rip it out and set my whole system up on PhoneValet, which I have been using in my home office for years. PhoneValet is so easy to setup and use, yet it's features are among the best documented of any software/hardware combos I have owned. It's so much better than any telcom services or any major phone system. You can't go wrong with it.