When comparing Tox vs Peerio, the Slant community recommends Tox for most people. In the question“What are the best ways to transmit sensitive information over the Internet?” Tox is ranked 6th while Peerio is ranked 20th. The most important reason people chose Tox is:
Tox uses military grade encryption and works completely peer-to-peer.
Ranked in these QuestionsQuestion Ranking
Pros
Pro Privacy focused
Tox uses military grade encryption and works completely peer-to-peer.
Pro Free and open source
The code is licensed under GPL (may change in the future) and is available on GitHub.
Pro Multiple front-ends for multiple platforms available
At the moment there is no official Tox client, but a selection of 32 and 64 clients for Windows, OS X, Linux and Android is available.
Pro Free plan
The basic plan is available for free.
Cons
Con Early stages of development
Since Tox is relatively new, it has important features missing (like group video) and requires a proper code review before it can be deemed reliable and ready for everyday use.
Con Recipient has to be a Peerio user
If your recipient is not a Peerio user files can't be send and communication can't be established.