002Call

002Call lets you call any phone number in 190+ countries from your web browser. There's no app to install, no SIM card and no contract. Rates start at $0.02 per minute. You top up credit and pay only for the minutes you use, with no subscription. Your first call is free. You can set a custom caller ID, and you see the per-minute rate before you dial. It works in desktop and mobile browsers, so it's handy for calling family abroad, reaching banks and service lines in another country, or calling home while travelling without roaming fees.

Pricing: pay-as-you-go credits from $0.02/min, first call free, no subscription.

A simple alternative to Skype, Google Voice, Rebtel, Viber Out and magicJack.