Cyberleads - Find fast growing companies to do business with

Crunchbase - Crunchbase is a platform for discovering industry trends, investments, and news about companies around the world.

DollarLeads.co - A monthly subscription/one-off lead generation SaaS focused on driving quality over quantity on leads. All leads are hand-picked and focus on companies that are willing to hire/outsource parts of their operations.

CB Insights - CB Insights is a company database for the venture capital and corporate development community.

SaasyDB - Lists of recently funded companies with verified employee email addresses, sent to you monthly

Tracxn - data on companies