One of the killer features of the Desmos Whiteboard is an interactive calculator that graphs equations as you write them. (Founder Eli Luberoff was a double math and physics major at Yale). Desmos has now taken that and rewritten it as a standalone online graphing calculator. It instantly draws the equations as you update them, it’s free, browser-based, color-coded, and you can share any graph with a bitly link.
You will never have to buy a Texas Instruments calculator again (do they still make those?)
Desmos closed an $800,000 seed round the day before Disrupt NYC from Mitch Kapor, Learn Capital, and Kindler Capital.