I believe that there is no exact alternative, but you might find something on: https://jobboardsearch.com
We are also running a job board platform [1] in a few countries and require each company to publish:
- salary brackets
- detailed tech stack
- development methodologies that they use
[1] Switzerland: https://swissdevjobs.ch
Germany: https://germantechjobs.de
Romania: https://devjob.ro