Tilde Inc is a software development company known for creating and supporting innovative open-source technologies and web applications. They are particularly recognized for their work on the Ember.js JavaScript framework, contributing significantly to its development and community. Tilde also offers Skylight, a performance optimization tool for Ruby on Rails applications, which helps developers identify and remedy performance bottlenecks. The company's focus is on empowering developers by providing tools and frameworks that enhance productivity and efficiency.