Boyd: Other than a greater comfort with dynamic languages, I don't know of specific impacts of Ajax on other languages. The techniques of Ajax are really only applicable inside the browser.
The first scripting language to benefit from Ajax in a big way was Ruby, though this was much more an accident than anything else. A Ruby Web rapid application development framework called Ruby on Rails started gaining attention in 2005. It had three things in its favor: it was based on the Ruby language (which a lot of people find quite nice to program with), developers found it to be a significant boost to productivity, and it was the first framework to integrate with any Ajax library. So it quickly became identified with Ajax and vice versa. Nowadays, every major scripting language has decent integration with every major Ajax library.
In the Python world, the TurboGears framework in particular accommodates support for several well-known Ajax toolkits, but the emergence of Ajax is essentially orthogonal to the language used for Web development, and is as likely to be used in the ASP.Net environment as by Python users.
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