Dyalog APL is more of an actual APL, https://www.dyalog.com/
There is also J https://www.jsoftware.com/#/
The array language community on discord "The Apl Farm" (https://discord.gg/SDTW36EhWF) is pretty active.
I also love the Arraycast podcast https://www.arraycast.com/ many amazing interviews and interesting discussions.
I've been using klong as it is small, quick to build and has good intro, reference and quick-reference.
One downside is somewhat memory limited.
https://github.com/razetime/ngn-k-tutorial
Dyalog APL is more of an actual APL, https://www.dyalog.com/
There is also J https://www.jsoftware.com/#/
The array language community on discord "The Apl Farm" (https://discord.gg/SDTW36EhWF) is pretty active.
I also love the Arraycast podcast https://www.arraycast.com/ many amazing interviews and interesting discussions.