Is there any free alternative to postman?

I am looking for something that could replace postman. Post allows users to create sharable link of the API. Team members can access the link to get to the shared endpoint.
something like:
https://universal-crater-871576.postman.co/workspace/xyz450a9dbb-9717-4e08-8e7f-8a6eed70b0fa/request/4902013-b07b44ca-9a35-44f3-ac04-a3523dfc6940

The problem is that only those who you have added to your team can access this link. And postman doesn't allow more than 2-3 members. Atleast not for free.

I absolutely love postman because of various features such as ability to create variables etc. Is there a free alternative that has most of the features of postman?