Help me to determine the most useful tools that could be used by you from the list below

Simple Chatbot

Linkedin Email Extractor

Social proof widget to your website

API tool - Detect and prevent fake user registration and sign-ups

Newsletter / Outreach tool - Build newsletter campaigns for your subscriber leads.

Reviews Tool - Grow the reviews for your local business. Motivate your visitors and customers to leave feedback.

Daily Whois database parser - Get more than 50,000 leads per day

Email Finder Tool

Better to have all-in-one suite for sales and marketing needs