ownCloud server or Seafile alternative

Question

I am looking for an alternative to Seafile or ownCloud that can be self hosted. It should offer a web interface and a client as an alternative.

• I cannot use ownCloud because it is not optimized to be run on a Windows server.

• I cannot use Seafile because it does not work over HTTP or HTTPs.

• I do not want to use Dropbox or similar services.

It should support synchronization of the file system with a Windows client.

It can be open or closed source. Free or paid.

The most important requirement is that the server software can be installed on a Windows server.

Answer 1

Update
4.0.6 was released and is available on Windows now. So Seafile should completely fulfill your requirements.

Update
4.0.1 was officially released a day after I answered this (now up to 4.0.4). I've been running it with HTTP/HTTPS sync ever since and it's worked great. The only problem is that it does not seem to have been released for Windows (server component) yet. I don't know of the ETA on it but if you really want to use it now on Windows, you can run it on Linux in a VM using something like VirtualBox.

If you wait for the Seafile 4.0 release, it will have support for syncing over HTTP/HTTPS. Right now it is tagged as beta and there is no ETA as far as I'm aware since they missed their own roadmap date of Nov. 15th.