The best replacement for google forms is surveymonkey.

The best alternatives to google forms are rated as following:
★★★★★  surveymonkey
★★★  wufoo
★★  adobe forms
★  survey monkey

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Speaking about google forms, one probably shouldn't forget about attachments.

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



Google Trends

Scale is based on the average worldwide traffic of google forms in all years. Click on graph for more.
google forms
surveymonkey
wufoo