You could have downloaded CERF 4.5.0 for Mac from our software library for free. The software lies within Productivity Tools, more precisely Office Tools. The most popular version of the application is 4.5. Cerf4.5clientosxc.dmg is the common file name to indicate the CERF installer. This free Mac application is a product of Cincinnati Children's Hospital Medical Center.
From the developer:
CERF is designed to replace paper notebooks entirely. It enables collaborations and sharing of data and research results, provides a complete audit trail as well as version control for documents, and allows you to search very efficiently through all text notes, PDFs and Word documents stored in the system.
You may want to check out more Mac applications, such as PitStop Extreme or FileOpenInstaller, which might be similar to CERF.