Favourite iPad apps

This is a listing of my favourite iPad apps: Dropbox - Absoutely invaluable for shifting files too and from the iPad; synchronise files between iPad and other computers; useful for collaborations Squeezepad - Excellent and easy to use interface for Squeezebox Server.  Logitech's series of Squeezebox audio devices are really rather a nice way of managing and playing digital audio files. iAnnotate - read and annotate pdf files.  Aji Reader Service can be used to synchronise pdf files between Mac or PC and iAnnotate.  I use this to synch my pdf collection which I manage on the Linux and Mac notebooks using Mendeley.  Unfortunately the current version of the Mendeley iPhone/iPad app leaves quite a lot to be desired. iWork - three iWork applications have iPad versions: Pages, Numbers and Keynote Skype -VOIP telephony via the iPad.  No video of course, but the rumoured second generation iPad may have video.  Works well on my WiFi model iPad. The Feed -Interfaces with Google Reader to help keep on top of your RSS feeds (I usually follow around 120 or more feeds). Tweetdeck - Not quite as full-featured as the desktop version, but still pretty good for emitting thoughts into the twitterverse.  Has a useful browser panel. Headspace - A kind of hybrid task manager, planning, to-do list app that is really quite versatile.  Three dimensional effects! Wolfram - Very useful if your web searches aim to pull out numerical analyses.  Reasonably good value when I got it on special offer, but I guess one could always access Wolfram Alpha via Safari.  A bit too focussed on American data. Notes Plus - very versatile note taking app, with diagrams and text.  No character recognition - for this try WritePad.  Works best with an iPad stylus. Quickoffice - read and edit MS Office documents. Penultimate - a neat and easy graphic note-taking app.  Works best with a stylus, otherwise you're finger-painting