The best replacement for forms is wpf.

The best alternatives to forms are rated as following:
★★★★★  wpf
★★★★  mvc
★★★  reports
★★  windows authentication
★★  ideas
★  windows forms
★  web forms
★  mfc
★  wood forms
  wufoo
  documents
  focus on form
  1099 forms
  shapes
  surveymonkey
  infopath
  triangle breast forms
  formidable pro
  w4
  proprietary forms
  w2
  katas
  reports access
  paper forms

Your alternative for forms is not listed? Suggest!
Speaking about forms, one probably shouldn't forget about javascript.

Other search terms related to forms and their ratings are:
★★★★★ javascript
★★★★★ css
★ file upload
paypal integration
You have in mind a companion for forms and it is not yet here? Propose!



Google Trends

Scale is based on the average worldwide traffic of forms in all years. Click on graph for more.
forms
wpf
mvc