The folks at Source. We've been producing extensions for Photoshop since 2012. Our plugins are designed to ease some of the most common issues in the design to code process.
These plugins are focused on the developer stage of the site creation process; turning PSDs into fully functional websites. Given many developers don’t even need Photoshop for any other purpose than accessing PSDs, it’s a natural next step to see this type of workflow enhancement taken right out of Photoshop all together.
That's what our new service, Avocode, is all about.