get gmail, it's the best webmail.
roundcube
How can it to webmail if i have to download?
What do you mean by open source webmail? You've not really made any sense.
Are you trying to setup webmail for other people and offer it as a service? If so Roundcube makes sense as a suggestion.
Otherwise... hotmail, gmail etc...
but webmail just for me to use, not to start for others...
Do you mean an open source mail client? If so.. Thunderbird (created by Mozilla)
You're not making sense. Are you hosting the service?
Sorry for the confusion guys!
All I want is something like gmail I can use as my email. But I want it to be open source.
Not Thunderbird because that is not operated via a brower - i want to be able to access it anywhere.
Why do you want it to be open? You're not hosting it, so you don't have access to the config and can't add features.
So in summary, you want an Open Source Webmail provider?
So a provider that uses Open Source software would be enough? (which isn't their own)