- https://growthmodels.co/growth-studies/
- https://pmfsurvey.com/ - PMF Survey
- https://productloops.com/
- https://ionized-glove-6f2.notion.site/MakerBox-Frameworks-ebf74bb2733b4b8892ff746db8cba058
- https://zerotousers.com/ - Which acquisition channels work for founders?
