TestComplete is a function testing tool developed by Smartbear company.
We can test windows, web and mobile applications using TestComplete.
It is a licensed tool.
Here is the list of salient features of TestComplete.
Record and playback
Data driven, keyword driven testing
Integration with BugZilla, Jira
COM based architecture..So We can automate the TestComplete itself.
Support for many technologies like Xamarin, Adobe, HTML5, Silverlight etc.