PowerQueue is free, online, requires no signup or account creation and its compatible with all the major queue systems. You can use the native client libraries of AWS SQS, Google Cloud PubSub, Azure Message Queue, and AMQP.

PowerQueue worked across APIs so you can send a message using the AWS SQS API and receive it with any of the other APIs such as for example for Google PubSub API.

There is a Python script on the front page you can download and run, which uses all the native libraries from the cloud vendors to drive PowerQueue.

Use it for whatever you like.

Have fun.

Andrew