[Disclaimer, I'm one of the maintainers]
Another unikernel yes, sorry about that! :) . Unikraft started back in 2017 initially as a research project, and has been a Linux Foundation OSS project since 2018.
While Unikraft OSS is used in different use cases, our primary target is cloud deployments. Unikraft has 3 key principles:
1. A fully modular OS -- so that we can specialize the resulting unikernels (VMs) as much as possible
2. Linux-API compatibility -- so that we don't break applications
3. Integration with Docker/Dockerfiles (and other tools) -- for ease of use
Unikraft powers kraft.cloud . You can see the platform's guides to get an idea of the apps/frameworks it supports: https://docs.kraft.cloud/guides/