That Google search will likely get you results related to multimedia formats, like ogg, webm, and matroska.
The more useful query would be ‘containerized software packaging’. https://en.m.wikipedia.org/wiki/Snap_(software) is the link for snaps though, and it should be easy to find other containerized formats from there, Flatpak is probably in the ‘see also’ section
That Google search will likely get you results related to multimedia formats, like ogg, webm, and matroska.
The more useful query would be ‘containerized software packaging’. https://en.m.wikipedia.org/wiki/Snap_(software) is the link for snaps though, and it should be easy to find other containerized formats from there, Flatpak is probably in the ‘see also’ section