certifications in software testing

There are various certification programs available for the software testing professional. Basically for software testing there are two ypes of certification programmes.some certification are based on the subject knowledge i.e.how you should maintain the test process and test you ab0ut different testing terms.and ohter are tool based knowledge certification.some of the important testing certifications are:
1)Certifications from International Software Testing Qualification Board, ISTQB
This certification basically involves two levels:Foundation level and Advanced level.Advance level is further divided into Technical Tester,Functional Tester,Test Manager .
2)Certified Software Test Engineer (CSTE)
3)CSTP (Certified Software Test Professional) and CTM (Certified Test Manager):
This certification program is conducted by International Institute for Software Testing, IIST
Tool based certification:
Tools based certification are Mercury/HP product specialist exam and IBM Rational robot,RFT,RPT etc.Basically certification on these tools show that you have got enough expertise in these tools.