Off-the-Record Messaging 4.0.1

Off-the-Record (OTR) Messaging allows you to have private and secure conversations over instant messaging by providing:


No one else can read your instant messages.


You are assured the correspondent is who you think it is.


The messages you send do not have digital signatures that are checkable by a third party. Anyone can forge messages after a conversation to make them look like they came from you. However, during a conversation, your correspondent is assured the messages he sees are authentic and unmodified.

Perfect forward secrecy

If you lose control of your private keys, no previous conversation is compromised.

Note: This is a Pidgin IM Plugin. You may please download Pidgin IM Offline Installer at:

This point-release includes the following updates:

  • Fix max message size for Novell Groupwise
  • New Czech, Finnish, Brazilian Portuguese, Norwegian Bokmål translations. Updated French, Chinese translations.
  • The Windows binary has been linked with updated versions of libotr, libgcrypt, and libgpg-error.

Supported Operating Systems: WinXP, WinVista, WinVista x64, Win7 x32, Win7 x64

System Requirements: Pidgin IM Software

Program Limitations: