1. Asperite is not open source.
2. It’s okay for two projects to do the same thing, even if you personally prefer one over the other.
2. It’s okay for two projects to do the same thing, even if you personally prefer one over the other.
You might be confusing license with access. The product itself has a proprietary license. Even then, a majority of the libraries they produce are also available under the MIT license.
"source available"[1] is a different thing, and you're right that this project is "source available".
[0]: https://opensource.org/osd
[1]: https://en.wikipedia.org/wiki/Source-available_software
Their EULA forbids distributing the software, hence not open source.