So, you've built a smart script, a dashboard, or even a full-blown AI tool on the side—but now what? If your side project is just sitting in a GitHub repo or local folder, it’s time to explore the booming world of marketplaces designed specifically for tech creators, data scientists, and indie developers.

There are dozens of platforms where you can list, promote, and sell your digital creations—whether it's a SaaS app, a machine learning model, an API, or even just the idea for one. The key is to choose the right platform based on your product type, audience, and stage of development.

Popular platforms like Flippa and Acquire.com are great if you have a revenue-generating product or a mature MVP. Tools like IndieMaker, SideProjectors, and BuyMySideProject are ideal for smaller side hustles or experimental builds. If you're selling code assets, Code Canyon and Gumroad are fantastic for monetizing scripts, Jupyter notebooks, or AI templates.

Want more visibility? Use Product Hunt as a launch pad to attract buyers, investors, or even co-founders. Selling open-source? Combine GitHub Sponsors with a self-hosted checkout to stay indie and in control.

Before you list, make sure your code is clean, documented, and easy to deploy. Include setup guides, metrics, or demo videos to show off its potential. A well-presented side project can fetch far more than you think—and open up real opportunities.