Frequently called an advanced REST client, Postman is actually a tool that handles any calls sent over HTTP. This means that you can use Postman to send SOAP requests or GraphQL queries. There are other templates that explain how to work with SOAP. This template here contains examples of how you can use Postman to work with GraphQL.
Postman announced they are launching built-in support for GraphQL - coming soon to the Canary build.
Using this template, learn how to:
Other helpful resources: