[runningmike]

Your questions is rather general. But a try: "What’s the best Postman alternative if privacy is a concern — Postmate Client vs. Thunder Client?"

- Always use a local client (100%) that you fully control. - Be aware tat many providers have advanced finger printing techniques. So reaching out to a remote API is always a severe privacy risks! At least when you make an API call from you 'own' computer/home/work to an API-service. - Most 'tools' for making API tools use telemetry. If you use a tool within a IDE that uses Telemetry you could be harmed twice. (E.g. VSCode with Thunder Client)