strypey, What's the best self-hostable tool for adding a survey to your website. Looking for something that's 100% Free Code, not a mostly proprietary tool with source code released for a few non-essential bits released for openwashing purposes.
This article is a bit dated (2017):
https://opensource.com/article/17/2/tools-online-surveys-polls
... but it lists LimeSurvey, JD Esurvey, Quick Survey, and TellForm. A quick web search also turned up Surveyjs and KoboToolbox.