My Screambird alternative trance music project now has a page on Google Play where all the tracks released so far (four of them) can be purchased (or listened to for free): http://goo.gl/tmYvd
645 Pro: a camera app that has an option to create tiff files as well as jpg files, and offers some cool features like real-time ISO data, optional grid overlays, day and night modes, and aspect ratio dial.
Pocket: (formerly ReadItLater): an app that downloads the text from stories for reading later; competitor to Readability which was mentioned in episode #29.
Read Later: a free desktop client app for the Pocket (formerly ReadItLater) service.
ZooTool: a free social bookmarking service; works with Reeder. [Reeder was reviewed in episode #11].