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.
Robinhood - Free stock trading service.
Investor List - A searchable, crowdsourced list of over 1k investors
Finary - Track your net worth in real-time
Investor Hunt - Investor Hunt is the internet’s largest investor database with 40k+ angels and VCs from all over the world.
Stratiphy - Make sustainable investments with great stock insights
OpenVC - 2200+ VC firms by thesis to find 'best fit' for your startup