Progress also up until recently stewarded the excellent Nativescript[0][1] project -- though it doesn't always get the most press, I maintain that it is the best non-native development mobile development kit.
Since it seems to be really hard to find this information, want to make a copy of the content of the second link ([1]):
> A New Corporate Sponsor for NativeScript
> Progress is proud to introduce nStudio as the new corporate sponsor of NativeScript. After fostering a robust open source developer community, Progress looks forward to what nStudio will bring to the NativeScript community and customers.
Since it seems to be really hard to find this information, want to make a copy of the content of the second link ([1]):
> A New Corporate Sponsor for NativeScript
> Progress is proud to introduce nStudio as the new corporate sponsor of NativeScript. After fostering a robust open source developer community, Progress looks forward to what nStudio will bring to the NativeScript community and customers.
[0]: https://nativescript.org/blog/
[1]: https://www.progress.com/nativescript