Very soon Sente will be releasing a major update to the PDF rendering engine on their iPad app. When they do, I will revisit Sente with an in-depth review of an app which has evolved a lot since I last wrote about it. Till then, here is a quick list of seven lessser-known, but invaluable, apps for doing research on your iPad:

• Editorial is an excellent text editor that has become an essential part of my plain text workflow. Even if you don’t use any of it’s scripting capabilities, it is a first-rate word processor, but the ability to program your word processor is especially useful. Here are some of my own Editorial “workflows” along with links to others.
• Everclip solves a problem with doing research on the iPad* — multi-tasking. Everclip helps you multi-task  by watching your clipboard in the background (for about 10 min after you launch it) and adds any webpages or text you clip to new notes in Evernote. Another program, by the same developer, Lightly does something similar – but allows you to highlight text as well.  (*Actually, it is technically an iPhone app, but the small screen size on the iPad doesn’t really matter for what it does.)
• MoveEver gets around a limitation with the Evernote iOS app — it’s lack of batch operations. MoveEver allows you to quickly tag or file large number of items at once. Hopefully Evernote will eventually add this feature – but till then, MoveEver has you covered.
• Day One is my favorite journaling app. The best thing about Day One is that it makes it incredibly easy to update your journal – it can even remind you to do so at various times throughout the day (essential for me when I’m doing fieldwork). I also like that it syncs between my various Apple devices, making it easy to update no matter what I’m doing. Unfortunately for those who need high-security, the passcode protection is fairly minimal (your notes aren’t encrypted), but it is enough to keep out prying eyes.
• Memrise is a great tool for learning a new language. Or perhaps memorizing your IPA symbols. I’ve been using it to study Amis!
• Workflowy is my new favorite brain-storming app. It is a great way to make, organize and share lists (useful for collaborating with other). It is  packed with lots of useful features, like the ability to export to a plain text file, hide completed actions, zoom in on sub-lists, etc. (Unfortunately, the iOS version of Workflowy is inferior to the web app: it isn’t as easy to use, and it lacks some of the features of the web app; but it does make it possible to access your account offline and on the go.)
• PDF PROvider comes in handy when people email you Word files and you want to mark them up in GoodReader. It converts them to PDFs for you and lets you send those PDFs to other apps. Simple, but it does the job fairly well.

Have I left out your favorite app? Let us know in the comments!

UPDATE: Added a few missing links and cleaned up some of the hastily written text.