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400+ real apps (36GB), Over 920 million downloads
New: FreeCAD (Sep 27, 2020)
Are there old versions of FF Portable available here? I would like 51, so I can run Java on it.
We don't recommend using previous versions, due to potential security issues with those versions.
With that said, previous releases are available on SourceForge: https://sourceforge.net/projects/portableapps/files/Mozilla%20Firefox%2C...
Link serves me well.
This would not be for general browsing, but just accessing one site via a bookmark, that requires java to function properly, so we should be good as far as security is concerned.