reCAPTCHA is a free CAPTCHA service that helps to digitize books, newspapers and old time radio shows.About 200 million CAPTCHAs are solved by humans around the world every day. In each case, roughly ten seconds of human ...

Stack Exchange is a fast-growing network of 84 [and counting] question and answer sites on diverse topics from software programming to cooking to photography and gaming. We are an expert knowledge exchange: a place where ...

MindNode Pro and MindNode are elegant and simple-to-use mindmapping applications for the Macintosh that help to visually.