Hi,

Welcome to the community. I'll try to answer your questions...

1. As far as I know, Can Studios have the only visual page editor (Disclaimer - I work there) you can see it here https://canstudios.com/adapt-authoring-tool/adapt-support/support-videos/#preview-editor (you are welcome to take a free trial, its automatic sign up so you shouldn't have any issue waiting for a response) though it does not offer complete coverage, it does allow you to create pages, articles, blocks, as well as text, image and mcq content. It is a plug in to the main authoring tool, so you can still build other content into your course in the normal way.

2. The framework does support multiple languages. However the authoring tool does not current support this though I know it is on the road map. In the mean time, there is documentation on how to use this on the Adapt wiki, so you could export your course from the authoring tool and follow this process. 

https://github.com/adaptlearning/adapt_framework/wiki/Course-Localisation

Hope this helps,

Paul.