Rebtel is similar to Skype, only it doesn't require customers to download special software or use a separate device for making phone calls. You provide them an international number, they provide you a local number. When you dial, Rebtel switches your call to the Internet, allowing for cheap international, mobile-to-mobile communications. Rebtel says users have opened "several hundred thousand accounts."
CEO: Hjalmar Winbladh
Location: Stockholm, Sweden
URL: rebtel.com
Launch: 2005
Funding: $20 million ( Index Ventures and Benchmark Capital and founders)
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