Description of features

1v1 messages

Client is able to send, receive and display text messages to / from friends.

If client doesn't implement Message splitting, message size is limited to 1372 bytes.

Audio

Client is able to capture, send, receive and play audio to / from friends, using toxav.

Audio filtering

Client is able to filter out noise from captured audio using libfilteraudio1).

User should be able to tun on / off audio filtering.

Audio notifications

Client should be able to play sound upon receiving message / call / other. There should be an option to turn those notifications off, or tune them according to user needs.

Avatars

Support for avatars according to STS2).

Changing nospam

Support for changing nospam via UI. NoSpam is a small part of a Tox ID that can be changed with an explicit action from the user to prevent friend request spam, if the client supports it.

Chat logs

Client should have support for saving, loading, displaying and removing chat logs (history) of conversations.

Contact aliases

Client should allow user to set, display and remove alias for any friend.

Contact blocking

Client should allow user to block / unblock contacts.

Blocked friends would be unable to contact user, and user would appear to them as offline even if user is online.

Desktop sharing

Ability of the client to show the user's desktop in a video call, instead of camera input.

Proxy support

Proxy support can be HTTP or SOCKS5 (or both). For an example of a proxy configuration, see Tox over Tor.

Message splitting

If client supports message splitting, a user sending a message larger than the maximum size means the message will be split into several separate messages and sent as normal.

Faux offline messaging

Faux offline messaging is a partial support for offline messaging. If client supports it, it is possible to message offline contacts, in which case the message will be stored by the client and sent immediately once both contacts are online.

File resuming

File resuming is the ability of a client to resume broken file transfers. Partial support is support for pause and resuming file transfers.

Inline images

Ability of the client to display sent and received images.

Screen/Desktop notifications

Support for notifications appearing on the user's desktop or phone screen when receiving a new message, call, or status change.

Persistent group chats

Ability of the client to keep track of group chats and rejoin them automatically on reconnect / restart. Supported by c-toxcore.

Features

qTox µTox Toxic Toxygen TRIfA Antox Isotoxin jTox Protox
Interface Desktop Desktop CLI Desktop Mobile Mobile Desktop Mobile Mobile
Linux Yes Yes Yes Yes No No No No No
OSX Yes Yes Yes Untested No No No No No
Windows Yes Yes No Yes No No Yes No No
BSD Yes Yes Yes Untested No No No No No
Android No Minimal3) No No Yes Yes No No Yes
iOS No No No No No No No No No
SailfishOS No No Yes No No No No Yes No
Audio features qTox µTox Toxic Toxygen TRIfA Antox Isotoxin jTox Protox
Audio Yes Yes Yes Yes Yes No Yes No No
Audio filtering Yes Yes No No Yes No Yes No No
Audio notifications Yes Yes Yes Yes Yes No Yes No Yes
Group audio Yes Yes No No Yes No Yes No No
Video features qTox µTox Toxic Toxygen TRIfA Antox Isotoxin jTox Protox
Desktop sharing Yes Yes No Yes No No Yes No No
Video Yes Yes Yes Yes Yes No Yes No No
Messaging qTox µTox Toxic Toxygen TRIfA Antox Isotoxin jTox Protox
1v1 messages Yes Yes Yes Yes Yes Yes Yes Yes Yes
Chat logs Yes Yes (export possible) Yes Yes Yes Yes Yes Yes Yes
Emoticons Yes No No Yes Yes Yes Yes No Yes
Inline images Semi4) Yes No Yes Yes Yes Yes No Yes
Message splitting Yes Yes No Yes No Yes Yes Yes Yes
Faux offline messaging Yes Yes Semi5) Yes Yes Yes Yes Yes Yes
File transfer Yes Yes Yes Yes Yes Yes Yes Yes Yes
File resuming Semi6) Yes Yes Yes Untested No Yes No Semi7)
Spell check Yes No No No No Yes Yes No No
Screen/Desktop notifications Semi8) Yes Yes Unknown Yes Yes Unknown Unknown Yes
Typing notifications Yes Yes Yes Yes Yes Semi9) Yes Yes Yes
Group chats qTox µTox Toxic Toxygen TRIfA Antox Isotoxin jTox Protox
Group chats Yes Yes Yes Yes Yes No Yes No No
Persistent group chats Yes Yes Yes Prealpha Yes No Yes No No
Group chat history Planned10) No No Unknown Yes No Unknown No No
Group file transfers No No No No No No No No No
Group inline images No No No No No No No No No
Group offline messaging No No No No No No No No No
Group typing notifications No No No No No No No No No
Profile & Contact Management qTox µTox Toxic Toxygen TRIfA Antox Isotoxin jTox Protox
Avatars Yes Yes Semi11) Yes Yes Yes Yes No Yes
Changing nospam Yes No Yes Yes Yes Yes No Yes Yes
Contact aliases Yes Yes No Yes Untested Yes Yes Yes No
Contact blocking Yes No Yes Yes Untested Semi12) No No No
Name lookups Yes Yes Yes Yes Untested Yes Yes Yes No
Multiprofile Yes No Yes Yes No Yes Yes No Yes
Profile import/export Yes No Semi13) Yes Yes Yes Yes Yes Yes
Save file encryption Yes Yes Yes Yes Yes No No Yes Yes
tox: URI Yes Yes No No Yes Yes No No No
General qTox µTox Toxic Toxygen TRIfA Antox Isotoxin jTox Protox
Multilingual Yes Yes No Yes Yes Yes Yes Yes Yes
Proxy support Yes (Socks5 only) Yes Yes (Tor only) No Yes No No
qTox µTox Toxic Toxygen TRIfA Antox Isotoxin jTox Protox

Unmaintained client features

1)
Using libfilteraudio is not a strict requirement, but it is supposed to make filtering audio in Tox clients easier. In a case where it fails to ease filtering, an issue about this should be made.
2)
Single Tox Standard
3)
Currently stalled
4)
Preview for saved images only
5)
Messages are not stored, and thus they won't be sent across client restarts
6) , 7)
Transfers can be paused and resumed, but broken transfers will not be resumed
8)
Supported but not included in builds
9)
Sends typing notifications but does not show received ones
11)
You are only able to set your own avatar, avatars of friends aren't displayed
12)
You can block, but not unblock contacts
13)
Only by manually specifying which save file should be used.
Print/export