Spacedoo - Short actionable marketing hacks
Zoho Marketing Automation - All-in-one marketing software for multichannel engagement.
Growth Hacker Marketing - Ryan Holiday's book, re-released and expanded
Platformly - Platformly is a suite of tools for multi-channel marketing automation.
Primer - CSS toolkit and guidelines that power GitHub
Gradient Works Assignment - Software to automate and optimize your team's rules of engagement processes - from lead routing to opportunity distribution to customer account assignment.