If you want something open source and a bit more powerful, covering everything you've asked for and more, check out my product: http://haplo.org http://haplo.or

If you want something open source and a bit more powerful, covering everything you've asked for and more, check out my product: http://haplo.org http://haplo.org It's more designed for use within an organisation rather than individuals, but works very nicely for small numbers of users. And as it has a plugin API, you can extend it easily.