Expensify
Makes it straightforward to get around one of the most tiresome parts of business: filing expenses. Records mileage, tracks spending, adds cash expenses and even uploads images of receipts. Link a corporate or personal credit card with the app and card purchases are automatically imported and e-receipts generated.
Free, available for BlackBerry, iPhone or iPad, Android and WebOS (Palm)

WorldMate
The number one travel app for BlackBerry, Worldmate helps executives keep track of their itineraries, search for flights, receive news of flight delays, book hotels, organise car rentals and check the weather. All bookings are added to an itinerary and with everything synchronised with the WorldMate online travel planner and your calendar, schedules are easy to share with colleagues.
Basic version free, available for Android, BlackBerry, iPhone or iPad

Earthcomber
Helps business travellers locate just about everything they need when in an unfamiliar country or city. Finds everything from free WiFi zones, petrol stations and cashpoints to restaurants, cafés, pubs and shops, all located on an easy-to-use map. Places that have been reviewed show up in the listing and entries carry a link to a telephone number, an address and other useful information. A genuine one-stop-shop.
Free, available for Android, BlackBerry, iPhone or iPad

The TrainLine Timetable
For those travelling on business in the UK, the trainline.com app is handling more than two million train time requests every year. It proved to be one of the most successful apps last year. Finding out train times on the go couldn't be easier; the download facility means users can view timetables even when there is no internet connection. Passengers can now also buy train tickets through the app.
Free, available on Android, BlackBerry and iPhone

Virgin Atlantic Jet Lag Fighter
Anyone who has suffered from travelling across time zones knows how hard it is to shift jet lag. Virgin Atlantic has devised this app in partnership with creative agency Mental Workout and sleep expert Dr Chris Idzikowski. It revolves around a personalised daily activity calendar, providing advice based on the user's profile and his or her trip details. Enter your flight information and the app calculates the best way to beat jet lag.
Costs £1.19, available for iPhone

Talk To Me
For those business travellers who need to put their message across but don't speak the right language. This real-time foreign-language translator will do the job for you—say something in English and the application translates and responds in one of 40 languages. You can either play back the translated message or choose to send the file via SMS or email. The app also converts text to speech.
Free, available for Android