New site built on Codeigniter
Not really a webby thing that could save you time but yesterday we finished a 2 phase build.
Phase 1: A user backend as such, consisting of a 7 part entry form including ajax image cropping, lots of custom validation and conditional form elements.
Phase 2: The frontend, uses Infinite scroll to create a single page of user profiles, there is also a ajax rating system.
Codeigniter allowed use to build the site in 6 weeks, with 3 solid weeks dev on the forms. All the JS is jQuery based.
Check it out for yourself healthy life awards