I need to have my application translated into many different languages, I have the translators and know that I can use Qt Linguist. However as far as I can tell I have to package up Linguist myself and ship it out to the translators.
Is there a web-based solution or do other package Qt Linguist with the ts files?
I think you have to package it up yourself. However, while browsing qt-apps.org the other day I did come across Qt Linguist Download which seems to be a packaged version of Linguist designed to address exactly this need. I have not actually used this myself - our translation is done in-house so we have not had this particular issue.
Out translators translate use the TM-database for translate .ts (Qt linguist) files. TM-database native support the .ts files, Translation memory and google translate, also have small size and free. TM-database available at http://yehongmei.narod.ru/