http://mixpanel.com/
Web action analytics. Tracks events rather than pageviews, so users clicking "Like", etc. All data in real time, detailed analysis, retained >3yrs. Pricing is free up to 25k data points, $150 for 500k, and upwards. Interesting.
http://toutapp.com/
Tools to automate and track the success of repetitive emails. Insteads of copying / pasting the same pitches in email, use tout and track response, opens, clicks, etc on all the different templates. $30/month for 1 user, $50 for 3, $100 for 10.
http://www.punchtab.com/
Really interesting service that builds an instant "loyalty program" which tracks users points for various actions on a web site, creates a league table, allows for paid out rewards, and so on. Very interesting.
http://www.foundersatwork.com/
Jessica Livingston's book, Founders at Work, interviews with some of the key tech entrepreneurs from over the years.
http://paulgraham.com/startupfunding.html
This article is meant to be a complete summary of funding options for startup founders. In effect we're open-sourcing the kernel of what we tell founders about funding at Y Combinator.
http://ycombinator.com/
California based venture capital company focusing on seed funding, started by two stanford graduates.
