@liuz21 you can use the API to get a list of LTI apps installed in your instance:
This call will return an array of LTI objects.
You can derive who the publisher is from the URL, name and description fields.
The data also includes the data the LTI was installed and last updated.
However, there is no version number, which makes sense if you think about how LTI is managed.
The LTI app is hosted on the third party servers, and can be updated at any time without updating the XML configuration stored in Canvas. You will likely have to contact each vender to determine what version they are currently hosting.
This is a good question, I look forward to other responses.
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