Download of Culrs 1.0.0 for Mac was available from the developer's website when we last checked. We cannot confirm if there is a free download of this app available. The software lies within Developer Tools, more precisely Webmaster Tools. We recommend checking the downloaded files with any free antivirus. This free Mac application is a product of Culrsteam.
From the developer:
Culrs is an application that simplifies and accelerates the process of choosing colors for your design. The color palettes are nested in your menubar so you can manage them with ease. You can choose any palette from any category for your design. With this tool, you can easily find the right color combinations for your projects.
You may want to check out more software for Mac, such as Browsealoud, solr or joomla-, which might be similar to Culrs.