TESOL Today utilizes the LOCKSS and CLOCKSS systems to create a distributed archiving system among participating libraries and permits those libraries to create permanent archives of the journal for purposes of preservation and restoration. 

LOCKSS: Open Journal Systems supports the LOCKSS (Lots of Copies Keep Stuff Safe) system to ensure a secure and permanent archive for the journal. LOCKSS is open-source software developed at Stanford University Library that enables libraries to preserve selected web journals by regularly polling registered journal websites for newly published content and archiving it. Each archive is continually validated against other library caches, and if the content is found to be corrupted or lost, the other caches or the journal is used to restore it.     
LOCKSS Publisher Manifest page.

CLOCKSS: Open Journal Systems also supports the CLOCKSS (Controlled Lots of Copies Keep Stuff Safe) system to ensure a secure and permanent archive for the journal. CLOCKSS is based upon the open-source LOCKSS software developed at Stanford University Library that enables libraries to preserve selected web journals by regularly polling registered journal websites for newly published content and archiving it. Each archive is continually validated against other library caches, and if the content is found to be corrupted or lost, the other caches or the journal is used to restore it.
CLOCKSS Publisher Manifest page.