Knowee - Don't print your cards - Impress your contacts.

CoSell - Unlock revenue through your exclusive network purpose-built for referrals and relationship-selling.

Sansan - Sansan provides a internal contact sharing service for companies.

Intrro - Intrro is productizing the ability to learn who are the top performers in your company’s network—so you can hire more from recommendations.

Sidekick by Hubspot - Customer insight integrated with your email tools.

about.me for Slack - Create a visual team directory for introductions