Might want to check out some of the side projects posted on sideproectors (disclaimer - I run this site) https://www.sideprojectors.com https://www.sideproject

Might want to check out some of the side projects posted on sideproectors (disclaimer - I run this site) https://www.sideprojectors.com https://www.sideprojectors.com I suppose, it could be the opposite of what you're asking. These are side projects that people want to sell. But many of them have recurring revenue.