This is to help some of us find some common ground.
List the programming languages that you know at least some of.

I know some of
TI-Basic (duh)
http
Small basic
Java
C++

C
C++
Java
Ruby
GLSL
TI-BASIC
HP RPL (A more recent addition to the list)
z80 Assembly
x86 Assembly
ARM Assembly
SH4-A Assembly (To a lesser extent of the others)
Haskell (to a rather minor degree)

I don't know any languages useful for webpage/site development (besides Ruby + Rails), largely because I find web development to be a pretty boring chore.



?

Perhaps you meant HTML?

I know some:
C
TI-BASIC
HTML
CSS
Casio Basic
Lua

Hmm all I know is:
C (rather extensively)
C++ & C#
Ti-Basic
Perl
Ruby (enough to get by)
z80 (Started to learn it)

C
C++
PHP
JavaScript
FORTH
Lua
Python
GLSL
z80 Asm
SH4-A Asm
(old) VB
(little) Lisp
TI-BASIC (ti8x & m68k)
Prizm BASIC
Java (eww)
Bash

(self-made languages used for GlassOS-related projects)
gCAsm - gCAS3-tuned interpreted FORTH
gCasp - Lisp for gCAS3
gFORTHvm - serialized general-purpose FORTH

(Not listing markup languages, they aren't programming languages)

Why leave it at programming languages? Somewhat in order of experience.

Programming languages:

• C/C++
  
• Python
  
• (ba)sh
  
• Assembly variants
  
  • Z80
    
  • Nios II
    
  • ARM
    
  • AVR
    
  • PIC
    
  • x86(-64)
    
  • Blackfin
    
  • RX
    
  • SH
• C#
  
• VB (☹️)
  
• Java
  
• Haskell
  
• TI-BASIC
  
• Verilog
  
• ECMAScript (JavaScript)
  
• MATLAB (Octave)
  
• Merthese?
  
• Ada
  
• Mathematica
  
• Lua
  
• PHP (debugging other peoples' broken code counts, right?)

Markup:

• (La)TeX
  
• HTML (+CSS)
  
• Markdown
  
• BBcode? (😛)

Natural languages (er, mostly):

• English 😉
  
• German
  
• Japanese
  
• Na'vi

How does one program in HTTP?

I'm certainly no expert in any of these, but over the years I've coded in the following (roughly in order when I learnt them):

TI-Basic
Pascal
Z80 Assembly
HTML (not technically a programming language as mentioned earlier)
JavaScript
C
Java
Visual Basic
x68 Assembly
C++
C#
ASP (classic)
PHP

TI-Basic z80 and 68k
A little of z80 assembly
A bigger bit of Java
A smaller bit of Scala
C
Racket
A little of Axe
A little of Casio Basic

C
abit C++
ti basic
a bit axe

I know BASIC and C. That's it 😛 Everyone else knows so many more languages...

Don't worry, We all start somewhere.

English only ☹️ but learning TI Basic from Kerm Martian's excellent book 'Programming the TI-83 Plus/TI-84 Plus'.

Tari made things easy for me, as my list is something of a subset of his.

Programming languages:

• C/C++
  
• Python
  
• (ba)sh
  
• Assembly variants
  
  • z80
    
  • x86(-64)
  
  
• Java
  
• Verilog
  
• ECMAScript (JavaScript)
  
• Lua
  
• LISP variants including AutoLISP
  
• Lush
  
• MATLAB (Octave)
  
• Perl
  
• PHP
  
• QBASIC
  
• TI-BASIC
  
• Markup:
  • (La)TeX
    
  • HTML up to 5 (+CSS up to 3)
    
  • AIML
    
  • BBcode? (😛)

Natural languages (er, mostly):

• English
  
• French
  
• Latin

I know in chronological order:

BASIC (old style like Apple II)
AppleScript 😛
Python
C (++) (first used for wii)
TI BASIC z80
Objective-C (iOS, Mac less so)
a tiny bit of Java
Z80 Assembly

Let's see...

BASIC (learned on the Applesoft (Apple's modification of Microsoft 6502 BASIC) dialect)
Logo
RPG IV
C (and C++)
Visual Basic (both 6 and .NET, I know, I know)
JavaScript
TI-BASIC Z80
Python
HP FOCAL
(User) RPL
bash
A bit of 6502 asm
A bit of ARM asm

I'm sure I'm forgetting something.

I don't really want to participate in what basically amounts to a biggest-list contest, but I will state that Tari is clearly the winner because of:

That may be true, although it's pretty fun 😁 I sadly lost though, if it is a contest.

Just ti-basic although I am trying to learn more. Axe a bit

* TI-81/82/85/86 TI-BASIC
* TI-89/92+/V200 TI-BASIC
* TI-99/4A TI BASIC
* MS-DOS batch scripting (though it's been so long I don't really remember it now)
* QBasic
* Bash shell scripting
* In a technology education class in middle/jr. high school, briefly did some stuff with Legos in some form of LOGO, I think; wouldn't remember any of it now, though
* Tiny bit of 8080 ASM (dabbled in it, wrote a couple of very basic routines, almost no experience)
* Tiny bit of Z80 ASM (ditto; got distracted by my preference to 68k C)
* C
* Little bit of Javascript, sort of (just enough to write a few user scripts for my browser, have to frequently look up how to do things online)
* A bit of Perl (another of those languages I used the "learn by looking up how to do stuff on an as-needed basis" technique)
* Python (pretty fluent because that's my #1 favorite language)
* UserRPL/SysRPL (my second favorite programming languages 🙂)
* Merthese, if that counts 😛

Wow, didn't realize the list would be so long. Wonder if I'm forgetting anything. And I'm not listing HTML and CSS, because they're not programming languages.