Cryptocat is a web application that aims to provide an open source, browser-based communication environment with security that is comparable to desktop-based encrypted chat applications.

Cryptocat aims to leverage both the ease of use and accessibility afforded by web applications and the security provided by client-side public key cryptosystems.

Addressed problems

  • Repressive surveillance or monitoring of communication


  • Technology development


  • General public
  • Women
  • Youth
  • Sexual minorities
  • Ethnic minorities
  • Activists
  • Journalists
  • Advocacy groups/NGOs

Region(s) archive

  • Global

Technology attributes

  • Application deployment
  • Browser extension
  • Cryptography
  • Desktop client
  • Mobile application (clientside)
  • Sensitive data
  • Server daemon
  • Software as a Service (SaaS)
  • User interface/experience
  • Web application
  • Anonymity