...
The Configuration Management Database or CMDB is an ITSM process that is predominantly being used in datacenters to manage their Configuration Items (CIs).
Market shares of prominent competitors
Main competitors as
Main competitors asof 2018 include, according to the IT market research companyAppsRunTheWorld:
ServiceNow (approx. 36.8%)
Atlassian (JIRA Service Desk) (approx.13%)
BMC Software, Inc.
Ivanti
LogMeln, Inc.
Microsoft
IBM
SolarWinds
CA Technologies Broadcom
ASG Technologies
Others
The same study, which is carried out annually indicates changes in market share from 2015 to 2018:
...
Others: shares shifted among remaining vendors.
SAP, Axios systems (ASSYST), ASG Technologies, CA Technologies, IBM: market share diminished
SolarWinds, BMC, LogMeIn, Ivanti (merged from HEAT and Landesk), Microsoft: market share increased
https://www.metamorphant.de/blog/posts/2020-04-15-jira-service-desk-vs-service-now/
List of 10 https://www.device42.com/blog/2020/02/24/10-cmdb-tools-you-need-to-consider-in-2020/