Google Groups - Google Groups allows you to create and participate in online forums and email-based groups with a rich experience for community conversations.
Zoom - Equip your team with tools designed to collaborate, connect, and engage with teammates and customers, no matter where you’re located, all in one platform.
Galette - Galette is a membership management web application towards non profit organizations.
Skype - Stay in touch with your family and friends for free on Skype. Download Skype today to chat and call on desktop and mobile.
Bigtent - BigTent is a web-based organization and communication portal for groups.
WebEx - Cisco WebEx Web Conferencing, Online Meetings, Desktop Sharing, Video Conferencing