ZAP is no longer an OWASP project, and has not been one since August 2023.
So if you see ZAP referred to as “OWASP ZAP” anywhere, that reference is out of date - the correct name is just ZAP, or ZAP by Checkmarx.
For more context on the move out of OWASP, see:
- ZAP is Joining the Software Security Project (August 2023)
- ZAP Ownership