Conference calling services can be used to hold meetings when attendees are spread out all over the country or even around the world. They can also be used to host teleseminars, classes held over the telephone. There are many affordable conference calling services, but the most affordable are free! Here you will find 30 totally free conference call services.

Calliflower
Free phone conferencing and interactive chat. Premium plan includes document sharing and international call numbers.

Calliflower Facebook App
Facebook App for free conference calls via Calliflower.

via 30 Free Conference Call Services | Articles | IdeaLady.com.