As Twitter focuses more on how to monetize the company, developers are beginning to feel as though they may get the cold shoulder.

Until recently, Twitter has been very free with its information that allows developers to build companies on applications that complement or make direct use of the company’s platform. More recently, however, it’s becoming evident that Twitter has ambitions to make some of the profits from those developers’ ideas its own.

Twitter recently acquired the company Atebits, which makes the popular iPhone and Mac application Tweetie, and it has been making inroads toward developing in-company applications that directly rival many companies whose offerings make use of the Twitter structure and data.

Another example of Twitter simply buying up the information is the search engine company, Summize, which Twitter acquired in 2008. What developers are worried about isn’t being bought out – it’s being circumnavigated entirely.

For example, one company, CoTweet, offers tools for businesses to manage their Twitter accounts. Twitter is in the process of developing its own in-house business system that directly competes with CoTweet.

And CoTweet is not alone in its fears that perhaps what came to them so freely might not stay that way for long.