The Syxton CMS is still early in its development.  I am the only developer of Syxton CMS and it isn't a full time thing.  I began in late 2006 thinking about creating a simple website that a common user could update without needing any help from me.  It has grown into a very powerful CMS, including event creation allowing registration and pay, forums, image libraries, blogs, RSS feeds, etc.  

I will try to make a list of all the features of Syxton CMS as soon as possible.

On another note: Below is a list of small standalone tools I've made for myself, but if you want to use it, here it is.

Sandbox Toys

I've create a small math program for my son Xander.  Maybe it will help your kids learn too.

http://www.sandbox.syxton.com/math.php
 

Balancing the checkbook can be hard when you have a total but don't know what little charges add up to that total, so I created a little checkbook helper.  Put in a Sum and all the charges that "could" be a part of it, and it will give you the answer.

http://www.sandbox.syxton.com/checkbook_helper.php