There are two new radically alternative currencies have recently popped up.
Check out Occupy's new negative interest community currency.
And a free software application called Swatopia that allows you to set up a group and trade in multiple units of alternative currency.
Unfortunately, the added flexibility of choosing your unit may very well make your trades taxable and may penalize those receiving state benefits who are not currently working. But if you are already a war tax resister, then who cares?!
I couldn't find much info about these groups and their intentions.
That said, this is great progress. Free money is a step in the right direction towards resiliency and real democracy. Free the currency commons!