Originally Posted by
berlinonaut
Apart from that, if you are a heavy rider there's always Bike Friday (with their heavy rider upgrade if necessary) and - if you are willing to spend a little more there are brands like
Bernds,
Samson and
Pacy that do high quality folders that are suitable to heavy riders. All three are from Germany, so possibly a bit difficult to get hold of if you are from overseas but not impossible.
Since we're mentioning folders from Germany, might's well mention RundM's Birdy.
https://en.wikipedia.org/wiki/Birdy_(bicycle)