New tech essentials

Hi all!

I am just doing a little research on the most typical/common/usefull tech-products set-up for the Tech-entrepreneur community. The questions is, if you were to launch a new company or venture today, whether it is a service or a product-oriented, which 3 products would you buy/subscribe first?

I am thinking e-mail, website (which provider if any), Slack, zoom, some productivity software?