"FoxTrot Attaché Search is an iPad and iPhone companion to FoxTrot Personal and Professional Search, far and away the most powerful search and indexing application on the Mac. It leaves applications like Spotlight, Devonsphere Express and Found for dead.
The indices Foxtrot builds can have the text contents of the files included, including emails, PDF, PowerPoint, etc. With Foxtrot Attaché, one can now take those indices and the contents with you. This means I can take all my emails with me or the contents of 1000 academic articles.
The searching is fairly flexible on iOS and the speed is blinding. I mean instant, like you've got a Mac Pro doing it. If you use Foxtrot Search, get this. If you don't use Foxtrot Search and you have a lot of files to search, check it out." -- The real Entropy Dave5 on the Apple App Store (UK)