Google Apps is always being updated with new features on a regular basis. The killer new feature is the ability to add extra services in addition to the standard offering of Gmail, Docs, Calendar et al. There are several neat tools available from Google Labs and more are sure enough to pop up as time goes on. Currently there is a neat website bookmarking service, an forum/support centre (Moderator). There is also a most useful tool for version control and bug tracking.

There is also the ability to add services built using Google App Engine. But here's the real sweet part; developers can roll their own services integrated with apps, the possibilities here are endless. All that is needed is the App's public key to add a new service.

There are also some interesting services available from Google partners, some are free and others are subscription based. The most notably free app I have yet come across has to be Xoopit, which manages attachments and simplifies finding attachments, among many other cool features. Previously additional services to Google Apps from third parties were only available to Premier edition of apps and not users of the free Apps edition. I expect we will see more interesting apps coming from Google Labs. There is also Salesforce CRM integration, it is not particularly well integrated and a bit kludgy, it may suit some organizations but the Docs and Gmail integration could be improved, especially before handing over money for a subscription to the sales force service.

Combining the ability to create apps that integrate with the Google Apps suite and the recently opened up API to programmatically write to Google Docs opens up an endless possibility of document management solutions, such as invoicing and other such automated documents.