Accompany - Accompany platform integrates with email, contacts, social feeds and more to keep you informed on your professional connections.
Best Referral Programs - A curated directory of startup referral programs
Propeller CRM - Small business CRM with deep Gmail integration
Viral Loops - Viral Loops is a viral and referral marketing platform to launch ranking competitions, sweepstakes, pre-launch and referral programs.
Streak - Manage customers inside Gmail
GrowSurf - Referral software for B2C, FinTech, and SaaS companies.