So I am testing out MarsEdit, an app created by RedSweater. So far I am really liking it, so many rich and awesome features that make it nicer than using Tumblr itself to update and post. It took a few issues to finally get it working, one of which was an error on my own part which was entering wrong credentials. After a few very quick tweets by RedSweater, these minimal and mostly my fault issues were quickly resolved. So not only do they produce a great app, they also give great support.