FreeConferenceCall: Free reservationless conferencing. Each account accommodates 96 callers on an unlimited number of 6 hour conference calls. International Conferencing. Now with free recording.

Skype: Start a five-person call or invite others into a conversation you are already having. It’s really handy for those times when you need to catch up with everyone; so you don’t have to talk to each person individually (we all know how long that can take).

Gizmo Project: Free Worldwide Conference Calls. Conference between landlines, mobiles, and Gizmo Project!

FreeConference: Used at 60 of the top Fortune 100 companies. No credit cards required for sign up. Online scheduling and conference management tools.

Mobivox: FREE calling between MOBIVOX users & Save up to 98% on international calls.

Vello:A phone call will be placed to you at the appropriate time to ensure the conference begins on time. If for some reason you can’t answer, a voice mail is left with an easy to remember number (888-MYVELLO), and when you call back you will be automatically routed to the correct conference.

Foonz: The phone-conferencing service provider, has launched its mobile service for cell phones. You can now set up a group phone conference via SMS directly through your cell phone.

Iotum: The phone conferencing service, has launched a Facebook application letting you hold free conference calls with those in your network.

Gaboogie: A conference call platform that calls you and your attendees so no one is late again.