Rekall 2.3.4 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. Rekall for Mac lies within Developer Tools, more precisely DB 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. The most popular version of the program is 2.3. The actual developer of this Mac application is theKompany.
From the developer:
Rekall is a database front-end. It is not itself a database -- data is stored somewhere else, in an SQL server, and Rekall is fundamentally just a tool to extract, display and update that data (of course, it does lots more than that, it does forms and reports and scripting and so on). It is database agnostic, and does not have any preferred database in the sense that Access® uses the Jet® database engine.
You may want to check out more Mac applications, such as WitangoStudio, MySQLman or SequelPro, which might be similar to Rekall.