Sandbox private browsing for webapps?

I've been using a FOSS called web apps for awhile know to view, well, web apps. Created by github user tobykurien, has made an announcement that his project is Deprecated and It seems I can't find a similar alternative to it. I really don't want to have to use a web browser on my phone to view web apps, but I can't seem to find any FOSS like web apps.

privacy private browsing sandbox webapps