OnFly Calculator 3.5 has been released for the public.
With a lot of new features and improvements.

Download OnFly Calculator 3.5
You can download it from Codeplex
Also you can download it from this site at here

Get OnFly Calculator 3.5 Sources
OnFly Calculator 3.5 is the first release than also includes source code!
if you want to dowload, read and edit OnFly Calculator you can do it now.
To get sources please go to http://onflycalculator.codeplex.com

Version 1.0 (The little experiment)
The first version was a pretty simple calculator wich had the capacity of run VB.NET scripts.

OnFly Calculator 1.0

Version 2.0
The same thing that thing: a little calculator with an script compiler.
But in this version OnFly Calculator we can see a lot of new features that turned it into a big project.
In the 2.0 version we implemented things like:

• Skin Support
• Support for C# Scripts
• Support for all .NET libraries & custom libraries
• Code editor in the main window of the calculator

Version 3.0

The 3.0 version takes all the features implemented in 2.x versions but now in a new “Interface Core” based in Windows Presentation Foundation. 
The result is a new better graphic interface with a new skin core.

OnFly Calculator 3.0

 Version 3.5

The 3.5 version is maybe the biggest change on OnFly Calculator since versión 1.0.
But actualy is a bridge between the 2.0 version and 4.0 version.
3.5 version haves as his previous version a WPF based interface bur at this time cleaner and easyer to use.
This version haves too some important new tings like:

• CintieFramework implementation for reading and writing script projects, now a full script can be written as a single XML file that conains everything that is requred for edit & run an script.
• A new skin core based in XAML
• File Repositories let users reach a web hosted file with a built-in tool.

At this time the lattest release of OnFly Calculator is the 3.5RC1
You can download it from here