Normally we'd give a brand new site a break for not immediately having an API. When it comes to the rabidly popular FourSquare, which launched in March, developers have been clamoring to build on top of the service. So, today's launch of the FourSquare API (our FourSquare API profile) is bound to be met with extreme enthusiasm.
Jigsaw, has announced additions to their RESTful JSON and XML API as well as a developer program designed to enable developers to query, share, and resell Jigsaw’s community-contributed database of company data and contact information. They came onto the API scene in June 2008 with their declaration of "Data Independence Day", which focused on providing free access to their database of company information (more details at our Jigsaw API Profile).