With jassijs you can rapidly develop web apps. Write Typescript code in the browser, save it and the code is hot reloaded in the browser. There is a wysiwyg form editor, a report editor and a database designer.
The server runs in nodes (e.g. on Heroku with connecting this main repos and add postgres)
or completly in the browser.
The Stage of development is pre-alpha - it should not be used in production. But you could have a preview (https://uwei.github.io/jassijs/dist/sample/index.html).