Collective2 is delighted to announce "Seetu" - Collective2's strategy development language and backtesting environment. No software to download or install - just fire up Seetu in a browser and start testing your trading strategy ideas. Backtest across historical data. If you like what you create, you can turn your strategy into a Collective2 "system" and start selling your buy/sell signals at Collective2 on a go-forward basis. It's an open public beta test. It's free. We'd love your feedback. https://collective2.com/about-seetu