What is certification?
Certification is a process that Novell Labs completes to verify that an NLM is friendly to a Novell Server. It is also a way to work out some of the more difficult problems associated with NLM development. Additionally, it signifies to your customers that your NLM will work correctly with NetWare.
Novell's Yes, Tested and Approved Software Certification site:
Novell's Yes, Tested and Approved Software Certification software test tools: