Hi. I'm trying to build an extension for Thingworx and I wanted to do a Java Web App without using the Mashup Builder for my frontend. If it is indeed possible how would I go about doing this? So far from what I've seen in the documentation it only specifies custom widgets but those still need to use the mashup builder.
Yes you can, you just need to use the REST API for server calls, and you are free to do any web interface you want.