Pylon Observer is the best choice for a PVsell alternative.
While PVsell charges you per month with a cap on how many users you have on your team, Pylon gives you a premium solar design software with $0 Monthly Fees.
With high resolution imagery included, 3D shading analysis, and unlimited users on your team for $0 Monthly Fees, Pylon will ensure that you continue to win more solar business and keep costly overheads to a minimum.
It is worth noting that PVsell is no longer actively maintained and offer their users limited support options.
Conversely, Pylon is updated almost daily with new features and our world-class support is FREE for all users. Think of a feature you'd like to see in Pylon? Add it to the feature request board and we'll get to work on it for you!