I am using eclipse 4.15 (2020-03) and clearcase 8.0.1. I want to download clearcase plugin in eclipse that is supported by this version of eclipse. I tried from https://sourceforge.net/projects/eclipse-ccase/ and https://www.ibm.com/support/pages/node/306535 but nothing seems to be working.
I couldn't find anything in eclipse marketplace either. Can someone suggest something?
The page you mention includes:
Regarding point 2, you are using a much more recent Eclipse than Luna.
And point 1 points to "About Rational ClearCase SCM Adapter in Rational ClearCase version 8.0"
You can see the CTE plugin used here, but without indication it would be compatible with recent versions of Eclipse.
And it does not seem available on Eclipse Marketplace.