What billing system is best for multilingual website?

Each pages must be in difference languages.
I think many of billing systems don't fully support multilingual pages.

Additionally, maybe anyone could give me any real example.

You can look into WHMCS, it supports multiple languages. I have used it for months and it has been great. May be something you can consider.

http://whmcs.com/features.php

The best is WHMCS its very useful billing system.

Do you require invoices sending out in different languages too? Or just the interface?

We use clientexec and think its the best for multilanguages.

Regards,
Tommy

gate2vn
Do you require invoices sending out in different languages too? Or just the interface?

Yes, I need Invicees sending out in different languges. Also I prefer to have auto emails/messages, announcements, knowledgebase and everything in different languages.

Will be best also to have multi-currency, so client can see product in their currency.

Database must be in UTF-8 code, and must support UTF-8 connection to MySQL.

in that case, I haven't seen any. You have 3 options
- use multiple copies for multiple languages
- or in each invoice, you have multiple parts for each language
- write your own.

Let me know if you can find out any other solution

We use clientexec and think its the best for multilanguages.

I use ClientExec too, although it's a good billing system (and I like it) but it's not a nice thing to do to translate to Bahasa Indonesia. I see a lot of duplicate sentences and takes a lot of time.

If you plan to translate CE to your mother tongue language, it will need a lot of resources. it's quite easy, you just add the translation text under the english text

i think whmcs is best choice for multilangual system because it support about 10-12 languages of world...

whmcs support about 12languages you can use whmcs ...