I need an SMS gateway software like [Ozeki NG][1]. I am testing this product right now, but before investing in a commercial product I would like to map the free alternatives.

[Kannel][2] was recommended for me, but it is Linux-based that makes the configuration more difficult.

Do you know any good opensource alternative to Ozeki NG for Windows?

Basic functions:

 - two-way SMS messaging (sending/receiving)
 - capacity: about 1500-2000 SMS / day

Bonus functions:

 - email-to-SMS
 - SMS sending from databases (primarily from MySQL)
 - some APIs (primarily Java API) would be also useful for me.


  [1]: http://ozekisms.com/
  [2]: http://www.kannel.org/