Textsecure has wrong url on clients page
In this page (https://otr.im/clients.html) "textsecure" link go to https://whispersys.com/ but it's old. Formerly, Whisper Systems redirect to new url, but they don't this anymore.
new url: https://whispersystems.org
Sorry for my bad English.
(from redmine: created on 2015-12-10)