Kobo is based off of onadata, https://github.com/onaio/onadata https://github.com/onaio/onadata (which is actively maintained) which was in turn the continuatio

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(which is actively maintained) which was in turn the continuation of formhub (which is no longer maintained).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