[zeemonkee3]

How about vimperator? Vimfx is OK as a stop-gap but that's one extension I wouldn't want to lose permanently.

[cpeterso]

Here is the Firefox bug report for Vimperator don't working with e10s:

https://bugzilla.mozilla.org/show_bug.cgi?id=1100918

The Vimperator developers are working on it here:

https://github.com/vimperator/vimperator-labs/issues/211

[saidajigumi]

Nope, vimperator doesn't work under e10s at the moment. See the tracking issue here:

https://github.com/vimperator/vimperator-labs/issues/211