Downloading Solis 1.0.8 for Mac from our website was free. The program lies within Developer Tools, more precisely Webmaster Tools. This Mac application was originally developed by Cazoobi Software.
From the developer:
Solis for Mac is a live design output that integrates seamlessly with your favourite code editor. The tool delivers a real-time, multi-viewport preview of HTML, CSS, SCSS, and LESS as you write it. The application is a powerful addition to your web design workflow.
You may want to check out more Mac applications, such as Peg or Timenerd, which might be similar to Solis.