Tumblr - A feature rich and free blog hosting platform offering professional and fully customizable templates, bookmarklets, photos, mobile apps, and social network integration.
Vicinity - High Quality Ambient Background Sounds in your macOS MenuBar
Soup.io - Soup is a tumblelog, a super-easy blog that can do more than just text: post links, quotes, videos...
chatback - Automatically connect to people around you & chat
Postly - Turn your photos into REAL beautiful postcards. Available on iPhone, iPad and Android. Make friends and family smile with a postcard!
BuddyPress - WordPress social networking in a box.