Lack of time is one of the typical issues founders face. Contacting investors takes time and is undoubtedly crucial. Since time is ultimately the most valuable resource, I am happy to see a tool that can help entrepreneurs save a significant amount of time.
Investor List - A searchable, crowdsourced list of over 1k investors
Clearbit - Clearbit provides Business Intelligence APIs
Investor Hunt - Investor Hunt is the internet’s largest investor database with 40k+ angels and VCs from all over the world.
ZoomInfo - ZoomInfo is a B2B database providing detailed business information on people and companies.
OpenVC - 2200+ VC firms by thesis to find 'best fit' for your startup
InsideView - InsideView aggregates and curates all the company and contact data, news and social insights, and professional connections you need to do business better.