Wiza - Create email lists from Linkedin Sales Navigator

Meetup - Helps groups of people with shared interests plan events and facilitates off line group meetings in various localities around the world.

LinkedIn - LinkedIn is a business-oriented social networking service, mainly used for professional networking.

Event Hunt - Startups and Tech Events Curated By Locals

Skylead - Skylead is a cloud-based LinkedIn automation tool & cold email software designed to help sales reps, SDRs, marketers, recruiters, founders, and alike to help them streamline their outreach, book 3x more meetings, and scale up their business faster.

Eventbrite - Discover Great Events or Create Your Own & Sell Tickets