The Solvent is a cross-browser AJAX application toolkit written in JavaScript. The Solvent is provided as modules or as an entire toolkit. The projects focus is to promote robust web applications and enable rapid web development.

AHAH is a very simple technique for dynamically updating web pages using JavaScript . It involves using XMLHTTPRequest  to retrieve (X)HTML  fragments which are then inserted directly into the web page, whence they can be styled using CSS. it is a subset with some very specific and useful properties, such as the lack of custom XML schemas. AHAH can trivially reuse existing HTML pages, avoiding the need for a custom web service. All data transport is done via browser-friendly HTML, easing debugging and testing. The HTML is designed to be directly embedded in the page’s DOM, eliminating the need for parsing.