I use Instapaper a lot—basically everyday—to keep track of things I need to read and things to post. On my Mac, I just use Instapaper in the browser to make posts, but I’ve hoped for a decent Instapaper client for a while.
ReadKit looks like it fits the bill. It’s simple, supports Instapaper, Pocket, Pinboard and Delicious, but it’s also relatively well-featured. Managing folders in Instapaper through the iOS versions and on the web has always been a bit of a pain, but it’s much easier to do on a Mac—and should be much more useful for me as a result.
Here’s Federico Viticci’s review from January.
If you have similar needs, I’d recommend giving it a look.
Thanks to Ben Brooks for pointing it out.