This is a great feature for anyone who wishes to chat live with their website visitors.
In order to use this plugin, you first need to have an active account, however (trial or paid), which starts at $21/month.
This is a great plugin to grow your email list. It allows you to create a variety of email sign-up forms (embedded forms, pop-up forms, etc.) and can feed your subscribers directly to your account with MailChimp, Constant Contact, AWeber, GetResponse, Campaign Monitor, InfusionSoft, etc.
This is a great plugin for companies who have direct contact with their clients. It allows your website visitors to schedule appointments, consulting sessions, etc. with the click of a button.
The free version covers up to 25 bookings. The next plan up starts at $29.90/month.
This is a must have plugin for everyone who wants to up their SEO game.
The free version gets you very far.