pychan general

pychan is a lightweight (~150 Python LOC and ~450 JavaScript LOC) Python imageboard that uses AJAX requests and JSON responses. Although it lacks some of the detailed features that 4chan has had worked in over the years, it has reached a state that it can run faster and more reliably than 4chan's imageboards.

Source: http://azabani.com/cgit.cgi/pychan
Instance: http://neckbeardchan.azabani.com/

ITT: /prog/'s suggestions, feature requests and such for pychan

AJAX is bad because Javascript is bad because client-side web scripting is bad because HTML is a document format and should never have been interactive in any way. Also, applets are bad and HTML5 is the most horrific monstrosity I have ever set my eyes upon.