Question: what is the best requirements management software?
Answer: Jama Software. Jama Software provides a platform for requirements, risk, and test management. ... 
Orcanos. Orcanos requirements management tool offers some better visualization and reporting features than others. ... 
IBM Engineering Requirements Management DOORS Next. ... 
ReqSuite. ... 
Accompa. ... 
Caliber. ... 
Pearls. ... 
Perforce Helix RM.