dhtmlxToolbar is a completely customizable JavaScript toolbar . It allows to create an attractive vertical or horizontal DHTML Toolbar within minutes. dhtmlxToolbar can load its content from XML so it can be easily changed without reloading. Has cross-browser/multiplatform compatibility, powerful client-side API and customizable icons (with javascript or xml). dhtmlxToolbar supports several buttons types(image, image with text, select box).

JS Auto Form Validator - JavaScript Easy-To-Setup
This is a very easy-to-setup form validation script. The main idea is: you heed to write NOTHING of JavaScript code to handle whole form validation process.

dhtmlxToolbar
dhtmlxToolbar is a free JavaScript Toolbar with high functionality, XML support, cross-browser compatibility and rich API. Completely customizable - you can freely define visual appearance of this DHTML Toolbar by simply changing its parameters.

dhtmlxTree - JavaScript Tree Menu
Cross-browser JavaScript Tree Menu with XML support, dynamical loading and rich API. The tree has built-in checkboxes, context menu, drag-&-drop and customizable items. There are CF and JSP tags for dhtmlxTree, as well as ASP.NET custom control.

Page Popup Maker
Page Popup Maker generates all the code needed to create several types of pop up windows. No programming skills necessary. Create a wide variety of popups, such as page load, page close, link, form button, mouse over or even image link.

.NET Pdf Component - Nasosoft PDF
.NET PDF Control - Nasosoft Pdf .NET v2.4 is a rich feature Pdf control for C#/VB.NET. It helps developers to read/write PDF files in .NET applications, including Create, Edit, Fill, Merge, Split, Encrypt Pdf files and extract text from Pdf files.