Is there any case Insensitive programming languages which still in active state !?

Answer 1

Assuming you are asking about imperative, turing complete, general purpose programming languages, I'm aware of the following - off the top of my head:
- PHP functions are case insensitive.
- VB (classic) / VBA / VB.NET are case insensitive. However, VB.NET... is only case insensitive for code within the same assembly. Once the assembly is compiled to CIL and referenced by another assembly, the interfaces are case sensitive.
- IIRC... Pascal is also case insensitive.
If declarative, domain specific languages can be included, the following would also be case insensitive:
- SQL
- HTML and CSS
I can't recall if XSLT templates and variables are case insensitive, but I would guess they are.

Answer 2

I believe Ada is one.

Answer 3

Nim might be another one I believe.
Also I believe COBOL is case insensitive. Although, my exposure was limited to a COBOL-like language used for a very short stint where we were rewriting components from SAP.

Answer 4

Once I used camelCase to write some Ada code for a project. Although the code worked, the reviewer asked me to follow their coding standards which was to use all uppercase. They were also using a pretty old Ada83 compiler. I didn't stick around too long as I didn't enjoy the all uppercase rule which IMHO made the code less readable at least to me.

Answer 5

To clarify, I once used a language called SiMPLE, stylized something like that. I found out years later that the creator quite literally died and all of the languages resources were put offline. You can still find it in the internet archive and I still have some code I wrote for it.
It was a case insensitive language.

Answer 6

Maybe