WebEx (a Cisco company) is arguably the most recognizable name in the web conferencing industry. They have online meeting solutions for small business and Fortune 500 companies.
WebEx's small business product, MeetMeNow, is ideal for online meetings, desktop sharing, product demonstrations, and real time collaboration.
GoToMeeting (by Citrix Online) is a simple online conferencing application that allows you to quickly setup web meetings. With GoToMeeting you can share online presentations, product demonstrations, and collaborate with people around the world.
With GoToMeeting you can host online meetings with up to 15 participants. If you want to host a meeting with more than 15 participants you will need to upgrade to GoToMeeting corporate, which can host up to 1,000 people.
Adobe had recently re-entered the web conferencing category with two new products - Adobe Acrobat Connect (for meetings with 15 people or less) and Adobe Acrobat Connect Pro (for enterprise clients).
Acrobat Connect runs inside the ubiquitous flash player, which allows you to run the application inside of your web browser.
iLinc is an easy to use web conferencing applications that has all the features you need (and some you don't).
iLinc is a custom web meeting solution that requires professional assistance to setup. If you want a plug and play online meeting tool go with WebEx MeetMeNow or GoToMeeting.
Dim Dim is a free and open source web meeting platform that is capable of handling almost any online meeting.
DimDim is a decent web conferencing application, but the performance, reliability, and security don't match WebEx MeetMeNow and Citrix GoToMeeting.
Microsoft has been in the online meeting game for more than 10 years. One of their first products, NetMeeting, was bundled free with older versions of their operating system. Microsoft's next generation of web collaboration software is Live Meeting.
Microsoft has never been known for creating simple user interfaces and Live Meeting is no exception.
Skype's primary function is making VOIP calls between computers, but it doubles as a conferencing call application. If you're online meeting needs are simple, and all of your business associates are on Skype, you may find it meets your needs.
Skype is a cheap alternative to advanced web conferencing applications, but it's missing some critical features that will hold you back.
Glance is a second tier web conferencing service trying to compete in the big leagues. The service shows some promise, but lacks a lot of important features.
If you're looking for a bare bones service that can accommodate up to 100 meeting attendees, Glance may be worth looking at. Top tier providers like WebEx MeetMeNow and GoToMeeting offer better reliability, security, and meeting features.