Cyclamate

Tanya writes:
Cyclamate is absolutely legal. It is actually a better alternative than saccharine, if you can get it, because it has no aftertaste. But it's almost impossible to find by itself, and certainly not available in NA.

Update by Ken Bush - 5th Aug 05 :
Cyclamate is readily available in Canada, where saccharin sweeteners are banned. Sweet n' Low and other sweeteners which are saccharin-based in the United States generally are cyclamate-based in Canada.