42matters Explorer - Explorer by 42matters is a research tool to visually explore databases of apps, publishers, audiences, SDKs, technologies, contacts and others.
Startup Toolkit - Interactive how-to guides to launch your startup
Apache Jackrabbit - Apache Jackrabbit content repository is a fully conforming implementation of the content repository for Java technology API.
Manager checklist - Cheatsheet of things every manager should do
Gravatar - Gravatar (an abbreviation for globally recognized avatar) is a service for providing...
Where To Post Your Product - A curated collection of 280+ websites to share your startup