Ruya - A calming space
Sourcegraph - Sourcegraph is a free, self-hosted code search and intelligence server that helps developers find, review, understand, and debug code. Use it with any Git code host for teams from 1 to 10,000+.
Defonic - Create a unique sound environment at home or in the office
Atlassian Fisheye - With FishEye you can search code, visualize and report on activity and find for commits, files, revisions, or teammates across SVN, Git, Mercurial, CVS and Perforce.
Spaces.FM Beta - Binaural sounds to improve focus and boost your productivity
Krugle - Krugle is the complete enterprise solution for search targeted to the development organization.