It’s been compared to a road map, a library and a musical score. Here’s why it’s so important to user engagement.

The founders assembled here walk a trail blazed by the likes of Moz co-founder Gillian Muessig, Smartsheet co-founder Maria Colacurcio and PicMonkey co-founder Lisa Conquergood. In doing so, they widen the path for those who will come after them.

Building unique and memorable user experiences is an art form, one that these Seattle tech companies have mastered in their own unique ways. Though you may have never heard of them, these five companies have worked with some of the biggest businesses in the Puget Sound region.