XKit has been discontinued. Similar apps include New XKit, which is free and open source. Other options are Tumblr Savior. Between them they cover Mac, Windows, Linux and the web.
A fork (copy with changes) of the original XKit addon, which improves your Tumblr experience. It is comprised with the ability to install more extensions, further adding more features.
Tired of posts about the iPhone filling up your dashboard? Hate hearing about some athlete's latest blunders? If you just want to hide posts about certain topics, Tumblr Savior is here to save you. Just add your most despised terms to the black list and Tumblr Savior will...
