2008.3
Updated May 30, 2008:

better access to processed logs

fixed subsidy multi-market bug

report purchases costs

many cost-limit UI clean-ups

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Smart Java IDE with refactoring for
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Zocalo is a toolkit for building prediction markets, markets in securities that pay out depending on outcomes of future events. They provide estimates of the likelihood of specific outcomes that are more reliable than other sources of predictions. more

The Zocalo Project Lead is Chris Hibbert.

• Visit the Zocalo project page at SourceForge.
• Want to help? Read our development plans.
• What does Zocalo mean?

Chris Hibbert's articles on Prediction Market mechanisms
• PM intro: basic formats (2005-12-30)
• PMs with Open-ended Prices (2006-01-05)
• Looking at Both Sides (2006-04-17)
• Book and Market Maker (2006-04-28)
• Liquidity in N-Way claims (2006-07-19)
• Continuous Outcomes using Bands and Ladders (2006-09-20)
• Integrating Book Orders and Market Makers (2007-01-10)
• Conditional and Combinatorial Betting (2007-03-06)
• Market Makers for Multi Outcome Markets(2007-09-10)