This morning I ran across two amazing pieces of software for the stuff that's commonly needed in a small office.
The first one is a mail/collaboration server and client - Zimbra. Technically, it is an alternative to MS Exchange or Lotus Notes:
http://www.zimbra.com/products/zimbra-open-source.html
The second one is a project management software - OpenProj, an alternative to MS Project:
Watching Douglas Crockford's talk about functions in JavaScript, there were a few interesting moments where I learned some new things. One notable detail worth writing down is that every function in JavaScript always receives two arguments: this and arguments.
arguments is array-like but is not an array and contains all the arguments passed to the function.
this contains a reference to an object that contains the function.
Some references:
http://www.devguru.com/technologies/ecmascript/quickref/arguments.html
https://developer.mozilla.org/en/JavaScript/Reference/Functions_and_function_scope
Here is a link to a module wrapper that enables encapsulating code into modules with CoffeeScript:
https://github.com/jashkenas/coffee-script/wiki/Easy-modules-with-coffeescript
