Propstream Reviews: STEP BY STEP Review of the Best Software for Real Estate... Let's Get Started! Most of the Propstream reviews written are designed to compare and drive sales for another product. That's not fair to you because you obviously have interest in PropStream® and simply want to know more about how you, as a real estate investor, can use it to build your portfolio. PropStream® is the best real estate data provider for people who want a one-stop shop for their needs. This real estate investing software offers more than just information; it also offers marketing and investor tools to help users succeed in the industry. One of PropStream's most helpful features is its analytics, which allow you to get all sorts of useful insights on your campaigns. In…