Three open source prediction market software options – mlogIn May there were none. The software that has run Foresight Exchange for many years (and soon a political market) was open sourced today (under an odd license). Zocalo had a new release last week. FreeMarket seems to have been available for a little over a month. For the heck of it, compare the one item represented by claims on both FX and FreeMarket’s demo: Gas$3 and $3 for a gallon of gas respec
