SixtyFour allows user to set a preference to start a 64-bit application in 32-bit mode. This reduces memory usage substantially by forcing the application to use less resources.

By running most, if not all, apps in 32-bit mode on low-memory systems, you can potentially increase system performance. With SixtyFour, you can keep your Mac running longer and better, especially if you need to run multiple apps simultaneously. This software allows you to maintain system performance without upgrading to newer, more expensive Mac models with more RAM.
Overall, SixtyFour is the perfect solution for anyone looking to optimize their Mac's performance without breaking the bank. Do yourself a favor and give this app a try!
Version 1.7.3:
Fixed startup crash on OS X 10.11
Minor bug fixes
Updated ProcessTimer