Like XKit? 
Here’s a couple of ways to support it, and only one of them costs money!

1. Send bug reports and feature requests. If you encounter a bug, screenshot it, with information about what you were doing and whatnot, and submit to me. You can find more information about how to send a bug report here. (the “I have another problem not answered here.” section.) If you have an idea for an extension, send me an ask! I will try to implement it as soon as possible, if it is possible to implement it.
2. Take the XKit Survey, available here. It just takes a few moments!
3. Talk to people about it, and spread the word.
4. Donate. Because I’m kinda broke, and developing (and providing support for) XKit takes a lot of time. You can donate here.

Thanks for putting up with this post on your dashboard, and using XKit! =3