TeamViewer - TeamViewer lets you establish a connection to any PC or server within just a few seconds.
ClickMeeting - Collaborate with partners and clients using ClickMeeting professional web conferencing software. Try it now, FREE!
Splashtop Remote Support - Remotely support your clients’ computers and provide them with remote access
Zoho Cliq - Team chat that's built for work
BeyondTrust Remote Support - BeyondTrust Remote Support is remote desktop access, service desk, and collaboration software for Windows, Mac, Linux, iOS (iPad, iPhone), and Android devices.
GoToWebinar - Webinar & Online Conference | GoToWebinar