XLT is a load and performance test tool that differs from other approaches due to its focus on high quality reporting and Java as programming language for the scripts. There are many ways to work with XLT and this documentation will show you some. It will explain features and functionalities and hopefully inspires you to take your performance testing to the next level.
Xceptance Test Center (XTC) is the upcoming SaaS solution for XLT and related testing services, such as monitoring. This documentation as well as XTC itself are work in progress and will be progressively enhanced, in parts by your feedback.