These are the standard certifications which is given to the software companies

 ISO – International Organizations for standards.
SEI – CMM – Software Engineering Institute – Capability Maturity Model.

 CMM level 5 – Optimizing.
CMM level 4 – Managed – (no defects)
CMM level 3 – Defined – (More than two applications)
CMM level 2 – Repeatable – (Two applications)
CMM level 1 – Initial – (beginning)
these levels are classified by considering the Kpa values.
Kpa - Key process area
PCMM – People Capability Maturity Model.
SIX SIGMA