The primary IDE for building PalmOS applications. Palm has exclusive rights to CodeWarrior for their version of the environment, currently in Version 6 (as of August 2000).
I particularly like CodeWarrior as it is one of very few almost seamless ports between Wintel and MacOS. Of course moving resource files from one to the other remains a problem.
The only problem with Palm having the PalmOS version of Metrowerks in house is that now Metrowerks can not as easily provide the stellar support they could when they had control over it, which bites. Palm, like it's arch rival, rarely admits to bugs, where Metrowerks always made sure their tools were the best, damn the publicity.