Sajax
Sajax, is an open-source tool designed to help websites using the Ajax framework. It allows the programmer to call ASP, ColdFusion, Io, Lua, PHP, Perl, Python, or Ruby functions from their webpages via JavaScript without performing a browser refresh.
Sajax supports IE5+, Pocket IE, Opera 8+, Opera mini 4+, Safari 1.2+, Mozilla 0.94+ and Konqueror.