Founder of DronaHQ here - a Retool alternative. would love if you can include us as well in your list. unless its just a list of open source
I have a few dozen such lists, I'll review one or two of them when building new things in a specific domain that might benefit from such tooling.
No requirement for open source, but I call it out explicitly in my notes since I do mostly use open source/self-hostable tooling, especially when working with nonprofits.