Productivity gains with the visual layout and database builders, web based IDE and project management, integrated ORM, Email, PDF printing, 3rd party integrations (Google and MS services, Stripe, etc.), extensibility using the full Python and web UI ecosystems, rock solid performance and reliability of the open source anvil-app-server in many challenging IT environments.

Anvil abstracts away every single problem that I've faced when building applications, the hosting, authentication, databases, UI... it's all been taken care of and thought about in a way that makes sense. If you've ever deployed streamlit with a sqlite database - just stop, go to Anvil, and never look back. It just works. I don't have to learn HTML/CSS/JavaScript (unless I want to, there's no hard boundary), and can focus on the problem at hand in the language I know best. The team behind Anvil and the community itself are great, every person I've shown Anvil to has been wowed by how simple it is to do things that could take days the "old fashioned" way. They have a very generous free plan for hobbyists, and an incredible Enterprise offering that I couldn't work without. They continue to bring more and more impressive features that are taking the product in an extremely strong direction - seriously, give it a go!

1. Python at both ends 2. an incredible, integrated IDE 3. built in database/web server, etc. (but you can use your own as well) 4. host on their managed servers or run your apps on a self hosted open source application server 5. if you really want to, you can also develop using your favourite editor (vscode, pycharm, etc.) 6. I find support very helpful (but I do try hard to provide meaningful and helpful issue reports). Just because its a rapid development environment, do not think it's suitable only for toy apps or MVPs. I and many others build full, mission critical, customer facing apps that get heavy use.