the company created into the early 1980ern rationally software has itself in particular with systems analysis and - Design busily and also numerous tools for this purpose develops and offered. The most well-known products are:
- Rationally Unified Process (RUP), on the UML which is based Framework to describe over development processes
- rationally CLEAR cheese and rationally ClearQuest, products to the configuration management and for error pursuit
- rationally rose, a graphic on the UML are based software Design tool.
- Rationally Application Developer (WHEEL), Java IDE, formerly Websphere Studio Application Developer (WSAD)
the company rationally software was bought 2003 by IBM. The company and the product names remained however so far.