Hi, The JMSAppender and its subclasses are still provided with Logback, but the documentation for those classes has been removed from the site. It seems it has happened between 24 october 2010 and 19 november 2010 (between 0.9.24 and 0.9.26 versions). I have found a way to access the old version of the documentation with the Wayback Machine, but it's not really a convenient one. Any idea why it's gone and if it will be restored? Do you plan to remove those classes from Logback? Thanks for your great log library. Stéphane