When it comes to design, it can often be quite tricky to get designer and client to agree 100% or even just be on the same page with regards to the direction of the project. Unless communication is streamlined and completely clear from the start, the project can run into a number of disasters, not to mention becoming costly and more time consuming than necessary. Osmosis is a web application that serves as a kind of questionnaire and design brief to help creatives save time at the very start of a project. The Osmosis API is available for developers to integrate this functionality with other applications.
Stack Overflow, the very successful question and answer site for programmers, have now released their own API into public beta. The API actually works with all of the Stack Exchange sites, including serverfault.com and superuser.com, with more sites possibly launching in the future. The API is supported by the site http://stackapps.com.