Bookshare - I'm giving away my books
HubSpot - Grow Better With HubSpot: Software that's powerful, not overpowering. Seamlessly connect your data, teams, and customers on one CRM platform that grows with your business.
Shufflebook - Exchange used books locally
Marketo - Marketo's powerful marketing automation software helps marketers master the art & science of digital marketing to engage customers and prospects.
Top Startup Books - A collection of must-read books for startup founders.
MailChimp - MailChimp is the best way to design, send, and share email newsletters.