Best when you need outbound international calling from anywhere
Talkala
No US number required, browser-based calling, and built around calling real numbers in other countries.
Google Voice is great if you live in the US. But if you are an expat or student abroad, Google Voice hits a wall: you need a US number to sign up. If you don't have one, you are stuck. Talkala does not restrict you based on geography. Sign up anywhere, check the rate, and immediately dial.
The short version
Up to 75x cheaper than carrier rates
The real dividing line here is not brand familiarity. It is whether the product assumes you live inside the US setup model.
Best when you need outbound international calling from anywhere
No US number required, browser-based calling, and built around calling real numbers in other countries.
Best when you already fit the US-only setup
Strong option for a US-centric second line, but a hard mismatch when signup itself assumes a US number and US availability.
Works, but usually at carrier-style cost
Can bridge the gap if you already have the right plan, but it does not solve the visibility and international-first setup problem.
Google Voice requires a US phone number for setup and is only available in the US. That's a hard wall for the millions of people who need to make international calls but don't live in America. If you're a Filipino nurse in Dubai calling a school in Cebu, Google Voice isn't even an option. It's not a limitation you can work around. It's a locked door.
Talkala is built specifically for outbound international calling from the browser. No US number required. No geographic restriction on signup. You create an account, see the per-minute rate for the country you're calling, and dial. The call reaches a real phone number, whether it's a landline, a mobile, or an office line.
If you live in the US and want a free second number for domestic calls and texts, Google Voice is solid. But if the actual job is calling real phone numbers in other countries, from wherever you happen to be in the world, it's the wrong tool. Talkala is narrower on purpose. It does international outbound calling well, and it doesn't make you pretend you live in the US to use it.
Next step
Browse the country list to find your destination, then check the rate. No US number, no geographic restriction.