Adium with OTR

Instant messaging tool for Mac OS X

Basic info

Adium is a free and open source client for instant messaging. It supports a range of different Instant Messaging Protocols from AIM to XMPP, as well as the OTR protocol for the encryption of instant messages.


Tool type: Instant Messaging (IM) Client
Ease of use: Easy, but requires you to explicitly indicate Adium as a supported application for some IM services.
Open source: Yes, GNU General Public License
Encryption support: Yes, it supports the Off-the-record (OTR) protocol.
Benefits: Built in support for OTR, no need to install OTR. Messages are encrypted end-to-end, meaning that messages are encrypted on the device of the sender and decrypted on the device of the receiver. Adium also supports perfect forward secrecy, meaning that messages are encrypted with a different encryption key per session and if the current keys are compromised, this has no impact on your previous messages.
Independent code audit: "None that we know of"
Cost: Free of charge
Languages: English, French, Portuguese, Russian, Spanish and others
Compatibility: Mac OsX
Developed by: Adium team, Adam Iser, Thijs Alkemade, and Eric Richie
Version as of this writing:
Website: Adium

Last updated: 07 March 2016

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