Downloading Kleer 2.0 for Mac from the developer's website was possible when we last checked. We cannot confirm if there is a free download of this app available. Kleer for Mac lies within Developer Tools, more precisely Webmaster Tools. According to the results of the Google Safe Browsing check, the developer's site is safe. Despite this, we recommend checking the downloaded files with any free antivirus software. This Mac application is an intellectual property of seyDesign.
From the developer:
Kleer is a very accessible RapidWeaver theme, making it ideally suited towards business, education, corporate and government websites. The dead-simple split or block navigation layouts offered make it feasible for visitors to navigate an entire website using just their keyboard.
You may want to check out more software for Mac, such as AcidSearch Installer, Blog.Mac Template Editor or solr, which might be similar to Kleer.