For a limited time, you may try - and retry - DataStax Academy's Cassandra Developer exam for free, and get a valuable Apache Cassandra Developer Associate certification. Here is all about these newly reviewed certification and exam, including some practice tests I recommend to improve your chances and score higher.
We identified most if not all specialized certifications in NoSQL products and services. This is a unique list for NoSQL data engineers, database administrators, data modelers or data architects. Many of these professional certification programs are brand new, and people don't know about them.
All about the new free Neo4j 4.0 Certification. As a Neo4j Certified Professional, you may upgrade your skills passing another free online exam, for version 4. Here is all you need to know, with some recommended practice tests I published on Udemy and as a Kindle e-book.