You Might have heard of Google Labstwitter_logo3? Gmail Labs, the one which allows you to access many features for your Gmail account which are under development and testing like the Gmail Goggles, Undo Mail Feature and so on. 

FaceBook Prototypes, which allows users to use applications which are not yet released for public use but are up for testing and other purposes. I did try out the Desktop Notifications Application from there, but found out that it was real buggy.

Similarly Twitter,  about which the developers are crazy have developed applications for Twitter using it’s API since a long time but very few allow complete integration with Twitter.com. But Recently when Britt Selvitelle, Twitter’s user experience and front end engineering lead confirmed that soon we might be able to see, Twitter Labs, Developers would get an awesome opportunity to develop apps for Twitter.com itself, test it out with users and showcase them. 

It will Include add ons to Twitter along with some more cool features you might have always missed. Directly watching videos in Twitter time line etc. might be possible soon!