Maybe try Swagger

Another vote for Insomnia if you want something postman-like (sortof). But also check out hurl if you're looking for something more test-oriented.

I find postman to be too complex, too much config all over the place. It's also difficult to share with others, it would be much better if it could store the settings in a file that could then be checked into git. That way everyone on the project would have the requests and could add and modify them as the server changes. Does any client like this exist?

I must be the only moron using JMeter in place of Postman.