I like that it's very easy to use. You can easily create new certificates, revoke old ones, etc. It also has a great user interface. The ability to bulk import certificates from other providers is helpful as well. I dislike having to manually create each certificate in each client. If you're not familiar with SSL/TLS or encryption at all, this program can be tricky to figure out. However, once you get the hang of it, you really can't go wrong. We're using it for all of our internal applications. It makes things much easier when creating new certificates and managing them.