If you are a big user of Twitter, you might be familiar with the company UberMedia. This company makes some of the most popular apps that users of Twitter actually use to send their tweets. UberMedia is behind popular apps like UberSocial, Echofon, and Twidroyd. These apps allow the Twitter user access features that Twitter doesn't offer directly.
The apps are popular enough that they accounted for 11.5% of all Tweets sent on one single day last month. The relationship between Ubermedia and Twitter isn't on the most stable ground though. Twitter blocked three of the firm's apps a while back and forced the UberTwitter app to change names to UberSocial. This may be part of the reason why UberMedia is eyeing launching a service that will compete with Twitter.
Some think that a competing service from UberMedia might be able to succeed against Twitter where other competing services from big names like Google have failed. The reason a competing UberMedia service may work is that the apps for Twitter are so popular that the company makes. The UberMedia competitor would go after Twitter by addressing common complaints about Twitter like the character limit among others.