Calex 1.3 for Mac could be downloaded 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 Productivity Tools, more precisely Cloud Services. 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 was originally developed by Martin Stemmle.
From the developer:
Calex helps you managing corporate time. Simply select your important calendars from any source and let Calex combine them to one single sheet. With Calex it becomes a lot easier to make appointments. Simply export a snapshot of your current calendar for any given period. Do not worry about giving too much insights by selecting the right amount of details for calendar exports.
You may want to check out more Mac applications, such as Everport - for moving 37signals' Backpack data to Evernote or Zeta Uploader, which might be similar to Calex.