Audacity-compatable expanders

Special Interest Groups Audio Processing
1

I was recently wondering which expanders or filters usable as expanders are available for audacity.

I know of these so far:

Chris’s compressor
DigitalFishPhones Floorfish
SE4

Any filters designed to be used as expanders out there?

2

If you’re using Audacity 1.3 on Windows, there’s a free VST expander here: http://antress.er-webs.com/