Here's our pick of the most useful and interesting apps from Microsoft's Windows Phone 7 Marketplace hub
Developer: Nick Yu
$2.99 (£1.88); free trial
GoVoice is a third-party app for Google Voice: you first create a Google Voice account, then GoVoice on your phone displays the Google Voice in-box, with call history, transcribed voicemails, etc. Reviews are generally good, currently with a rating of 3.5 out of 5 stars. Some of the complaints: slow at times, no background notifications currently, scrolling is occasionally problematic for some users. As Google Voice is currently only available in the US, it's not available to UK users.
Group Text (apparently formerly called Text Message Secretary)
Create and organise groups and contacts for sending SMS text message en masse, including pre-defined messages; create as many groups as you want, using as many of your contacts needed; groups can be colour coded for visual organisation. BrightKite is another group texting app, free.
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