Download of InCatalog 2.29.3 for Mac was on the developer's website when we last checked. We cannot confirm if there is a free download of this app available. The actual developer of this software for Mac is Em Software, Inc. We recommend checking the downloaded files with any free antivirus. The program is included in Design & Photo Tools.
From the developer:
InCatalog, a plug-in for Adobe InDesign, and Xcatalog, an XTension for QuarkXPress, with their easy-to-use data linker panels, enable you to create transparent links between your documents and your databases or spreadsheets. Once you have links in place, you can update prices, graphics, or product information with a simple menu invocation—or even change versions or swap languages.
You may want to check out more Mac applications, such as Realsoft3D, FRS Coloring Book Volume 2 or FbxConverter, which might be similar to InCatalog.