„ajaxed is the only one still maintained free classic asp library with built—in AJAX support. “

It rapidly lets you build modern web applications according to current web standards.

DEMO: Adding up two numbers, Simple RSS reading

ajaxed Library comes up with an unique AJAX technique which can be used within your classic ASP applications. You will be able to create Rich Web Applications with not much effort.

• Full AJAX support (calling server side function directly)
• No low level AJAX skills required
• No components installation required
• Easy installation in less than 3 minutes
• Short learning curve (about 20 minutes)
• Includes common components such as Datagrid, RSS, Validator, Cache, etc.
• Uses one of the most popular JavaScript Libraries: prototypejs
• Object Oriented (OO) Approach
• Includes a complete ASP JSON generator.
• Additionally it includes a handful useful functions and components
• Free for use (LGPL license)

More

project homepage at ajaxed.org. Contains a lot of examples and tutorials