Budibase is an open-source low code platform that helps you build internal tools in minutes 🚀
I am the cofounder of Budibase, and I agree with the many comments here around Microsoft throwing tools at the low-code space and seeing what sticks. The most popular source of users we get are PowerApps users who are fed up with the constant change and moving states.
If you are looking for an open source alternative to Powerapps - check out Budibase 
I am happy to remove this post, as it is slightly promotional, but I do feel it is very relevant.
After 3 months of hard work, Budibase's new built-in API Integration Platform is ALIVE for everyone to try! And for those of you who don't know, Budibase is an open-source low-code platform and alt to Retool, PowerApps, Mendix. And you can run it on Docker, K8s, Digital Ocean.
1 project | reddit.com/r/selfhosted | 20 Jan 2022
[AskJS] Low-Code Customer-Facing Dashboards?
Budibase - the open-source low code platform you'll enjoy using, Deploy with K8s, Docker, DO.
1 project | reddit.com/r/programming | 1 Dec 2021
Budibase - An open-source low code platform for creating business apps (alternative to PowerApps, Mendix, Retool) is now out of beta. Connect to SQL/NoSQL, build CRUD apps in minutes, and deploy using Docker
2 projects | reddit.com/r/docker | 18 Nov 2021
Introducing Budibase - an open-source low-code platform and alternative to PowerApps, Retool, Mendix. It’s completely written in Node js and Svelte js. With Budibase, you can connect to SQL/NoSQL databases, or start from scratch, and build simple CRUD apps in minutes.
3 projects | reddit.com/r/webdev | 18 Nov 2021