[dscpls]

Also look at kobo toolbox and kobo collect. They're based off the odk and forhub codebases I think.

Kobotoolbox provides a useful interface for previewing your data and building forms. Also an api for pulling collected data into other platforms

[pldpld]

Kobo is based off of onadata, https://github.com/onaio/onadata (which is actively maintained) which was in turn the continuation of formhub (which is no longer maintained).

See this readme https://github.com/kobotoolbox/kobocat for reference