From TealPoint Software:
Stop crashes and monitor your memory use with TealMemBrain, the application stack stabilizer. TealMemBrain boosts your stack space on OS3 and OS4 handhelds, eliminating the major cause of system instability.
A pop-up information window provides snapshot of the current memory state of the device from within any program, helping to show any potential shortages or conflicts. A special stack-boost feature optionally increases the amount of stack memory allocated to applications, making the device much more stable when running drivers, hacks, or other system extensions. TealMemBrain runs on handhelds running PalmOS 4 or earlier.