http://www.mono-project.com/Main_Page

Mono cho phép chương trình .NET chạy được trên Unix. Chắc la` chạy giống nhu Windows, nhưng chưa biết nhanh chậm hiệu quả như thế nào. Còn Mono bây giờ chưa đầy đủ vì nó chạy theo sau .NET framework development trên Windows. Neu da~ dung .NET nên chay trên Windows bởi vì NET framework trên Windows có đầy đủ packages with latest technologies.
Anyway, tôi chưa test Mono tren Unix, this is just my opinion.

http://cpaint.wiley14.com/
CPAINT (Cross-Platform Asynchronous INterface Toolkit) is a multi-language toolkit that helps web developers design and implement AJAX web applications with ease and flexibility. It was originally born out of the author's frustration and disappointment with other open-source AJAX toolkits. It is built on the same principles of AJAX, utilizing JavaScript and the XMLHTTP object on the client-side and the appropriate scripting language on the server-side to complete the full circle of data passing from client to server and back.