qtox is no longer maintained but there is an actively maintained fork available (see the Website link).
qTox is an open source chat, voice, video, and file transfer IM client using the encrypted peer-to-peer Tox protocol. It follows the Tox design guidelines. Tox is a peer-to-peer instant-messaging and video-calling protocol that offers end-to-end encryption.
qTox runs on Windows, Linux, MacOS and FreeBSD and offers text messaging, audio and video calls, screen sharing and file transfers. Additionally it has support for text and audio group chats as well as Identicons as avatars.
As the software is peer-to-peer, there’s no requirement for a central server.
The software using the Qt toolkit.
Key Features
- One to one chat with friends.
- Group chats – talk with multiple friends at the same time, like when you are standing together in a group.
- File transfers, with previewing of images.
- Audio calls, including group calls.
- Video calls.
- ToxMe and Tox URI support.
- Avatars.
- Faux offline messages – your friend receives them when they come online if you are online at the same time.
- Chat history – qTox can save your sent and received messages.
- Quotes – quote selected text in the chat window.
- Screenshots.
- Emoticons – replace smileys ( e.g.
:-)) with corresponding graphical emoticons. There’s support for custom emoji packs. - Different themes.
- Use multiple Tox IDs with different profiles, each of which can have different nicknames, status messages and friends.
- Blacklist – locally blocks a group member’s messages across all your joined groups.
- Multi-window mode.
- Uses IPv4 and IPv6 protocols.
- Uses TCP and UDP protocols.
- Auto-updates on Windows and packages for popular Linux distributions including Arch, Fedora, and Gentoo. There’s also support for OS X.
- Keyboard shortcuts.
- Translations for over 30 languages including Arabic, Danish, German, Spanish, Esperanto, French, Hungarian, Dutch, Norwegian, Polish, Portuguese, Slovenian, Russian, Turkish, and more.
Website: github.com/TokTok/qTox
Support:
Developer: toxcore developer team
License: GNU General Public License v3.0

qTox is written in C++. Learn C++ with our recommended free books and free tutorials.
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Read our verdict in the software roundup.
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Read our verdict in the software roundup.
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