I've tested both  Apollo Software and Locopon. One thing bothers me: both modules don't support unique urls. For example, if I have a site www.mysite.com, after I click tab "Forum", the url will be www.mysite.com/Forum/tabid/18/Default.aspx, then I select a language "French", I will get the same page in French and the url will be www.mysite.com/Forum/tabid/18/language/fr-FR/Default.aspx (so far so good), but if you click "Forum" again, the url will go back to www.mysite.com/Forum/tabid/18/Default.aspx, even though the page still displays in French. This applies to all the other languages: no matter what language selected for the same content, the url stays the same.

This is NOT search engine friendly.

Is there any ML module out there that can support the unique urls?

Thanks.

It's been a year since the last time I used the Apollo module. It really worked well except for the url part. Yes it's not completely search engine unfriendly but it's very difficult for search engine to index.

I was so excited to find the Apollo language module since the multilingual is so important to my sites. But I haven't been able to use it in a real world because of the url issue.

I don't know how difficult it is to add the language parameter to your navigation solution. But if you can fix that url issue it would be great and I can show people how useful your module can be.