I built List of Investor (https://listofinvestor.com/) because currently it's very hard to find right investors for your startup. LoI aggregates data from the web and organize it so that founders can easily find the right investors.
It took me approximately 3 months but I'm finally done building the MVP for LoI. I coded the backend in PHP and the frontend is built using Bootstrap. I'm excited to start marketing for LoI and getting feedback so that I can improve the product more.