As you probably heard, Apple finally removes support for 32-bit Mac applications this fall. This means that older software that has not been moved to 64-bit code will not work on the latest MacOS Catalina, and although Cupertino has provided guidance on the forthcoming "app ocalypse", identifying and taking action is a problem on affected apps. 19659002] A free (donation accepted) Mac tool called Go64 aims to ease the 64-bit transition by performing a quick scan of your applications and listing the 32-bit code still present. It's fast and painless – Go64 took less than 45 seconds to scan 1,586 apps (?!) On my iMac Retina 5K boot disk.
Of these, approx. 150 apps only 32-bit, many support programs from older Adobe Creative Suite installations. The remaining 45 were technically 64-bit, with minor dependencies on older 32-bit code. Such programs are displayed with a yellow warning in the 64-bit column and should work fine under Catalina. (It includes Apple's Final Cut Pro X and Compressor 4, which is expected to be fully compatible with the time Catalina is released.)
If you select an app with this warning, additional information appears at the bottom, while clicking More info displays a complete list of outdated components. In the case of an otherwise 64-bit Pro tool 12, the AvidVideoEngine.app frames are still 32-bit code; The older Pro Tools 10 are completely 32-bit, and therefore they are incompatible.
Finding 32-bit apps is only half the battle. The Go64 is designed to help upgrade or clean older software as well. While not an automated process, most software identified by Go64 contains a company name and website, with the latter only a click away in the toolbar.
After examining potential upgrades from the developer, the costs can be manually logged for future reference; It is also possible to save reports, but there is no way to print or export as a PDF. For many unwanted or abandoned apps, a click on the Move to Trash button removes them from your hard drive; others must be manually deleted.
Thanks to Go64, we got a jump on cleanup ahead of Catalina. Apart from a splash screen when you exit the app (which can be turned off after the first time), other St. Clair Software tools such as the excellent default folder X promote no intrusive ads or personal information.
Bottom line  A fast, free way to get a comprehensive look at 64-bit app compatibility and avoid surprises before installing macOS Catalina.