Analogs of cisco in other areas?

Question

Professional Certification

I know about existence of certificates from cisco. Interested in whether there are organizations that certify in other computer areas, and whose certificates are also widely quoted?

Answer 1

Each area has widely cited certifications, which, however, IT specialists in other areas may not know about. Given that there are many areas, it would be nice to narrow the circle based on your interests. Here, offhand, popular certificates for administrators:
Microsoft products
Certification from the Linux Foundation
Oracle products (DB, Java, Solaris, etc.)
MySQL