Free most commonly software for windows

ImageSwitch 1 is launched to be a helpful program which helps with rapidly and easily converting your image files between different formats. There is no sitting around waiting for a photo editor to load, no messing about setting up projects or fiddling with settings, just drag and drop your photos to convert them to the most commonly used formats (e.g. GIF, PNG) Quick, simple, easy.

Windows Vista Readiness Hands on Lab 1 is developed to be a helpful program which can teach developers about known Microsoft Windows Vista application compatibility issues. This process will walk the developer through specifics, focusing on solutions that will enable customers running your application to have a better experience on Microsoft Windows Vista. After completing this lab, the developer should be able to determine if and how the most commonly known application compatibility issues could affect their specific application.

S Lock is designed as a security feature for those of you wanting to prevent unauthorised users from using your computer. It also disables CTRL+ALT+DEL, ALT+TAB, CTRL+ESC, along with the most commonly used key combinations.
This stops a user completely from stopping the program unless they have the passcode. (PLEASE NOTE: The key combinations are enabled again once the key has been entered correctly and the program is unloaded).

SiteSub is a free Windows program specially designed to ease the process of adding your link to a website directory, blog directory or link list. It is NOT an autosubmitter.
Features include:
Fields for the most commonly needed website information;
Type once, copy as often as you need;
Reduces mistakes and speeds up site submissions;
Stay-on-top window for quick access to site information;
Save site details for later use;
Portable application - copy to your memory stick and use on the move;

QPlot: get a better view of your data.
Feature Highlights:
Visualize scatter data instantly and interactively;Support line point (vector) and tabular column (matrix) data;Import export Excel data by just copy and paste;Locate or read data points easily and accurately;Axis ratio can be manually preserved for more physical view;Its FREE.
Data Format or Layout:
Data file is text based (any file can be viewed by Notepad). Two major file layouts are supported: free form and count tagged. Free form is the most commonly used data format, essentially it has multiple rows and columns of same size. (sample1), (sample2), (sample3). Count tagged is another generally quick saved vector, matrix format which has a row indicates the total number of data and next row dumps the data one by one. (sample1), (sample2).