I think I'm pretty much doing pi approximations in every language now, so, here it is in Emacs Lisp (Elisp), a dialect of Lisp!
The issue with NASM has been fixed, but I still need to figure out float addition, subtraction, multiplication, and division before the NASM approximation will be ready.
Here are the other approximations so far:
Clojure - https://repl.it/talk/share/p-in-Clojure/41845
Scheme - https://repl.it/talk/share/p-in-Scheme/41844
Erlang - https://repl.it/talk/share/p-in-Erlang/41652
Elixir - https://repl.it/talk/share/p-in-Elixir/41530
Julia - https://repl.it/talk/share/p-in-Julia/41395
Nim - https://repl.it/talk/share/p-in-Nim/41372
PHP - https://repl.it/talk/share/p-in-PHP/41348
Crystal - https://repl.it/talk/share/p-in-Crystal/41276
F# - https://repl.it/talk/share/p-in-F/41261
Lua - https://repl.it/talk/share/p-in-Lua/41251
Dart - https://repl.it/talk/share/p-in-Dart/41240
R - https://repl.it/talk/share/p-in-R/41205
Haskell - https://repl.it/talk/share/p-in-Haskell/41199
Raku - https://repl.it/talk/share/p-in-Raku/41111
Rust - https://repl.it/talk/share/p-in-Rust/41056
Go - https://repl.it/talk/share/p-in-Go/40950
Swift - https://repl.it/talk/share/p-in-Swift/36150
C# - https://repl.it/talk/share/p-in-C/36141
Bash - https://repl.it/talk/share/p-in-Bash/36133
Kotlin - https://repl.it/talk/share/p-in-Kotlin/36125
Ruby - https://repl.it/talk/share/p-in-Ruby/34982
Java - https://repl.it/talk/share/p-in-Java/34978
QBasic - https://repl.it/talk/share/p-in-QBasic/34973
Fortran - https://repl.it/talk/share/p-in-Fortran/34890
APL - https://repl.it/talk/share/p-in-APL/34888
Forth - https://repl.it/talk/share/p-in-Forth/34652
LOLCODE - https://repl.it/talk/share/p-in-LOLCODE/34421
Python and Node.js (Node is linked in post) - https://repl.it/talk/share/2-Approximations-of-p-In-Only-Four-Lines-of-Code/32773
C - https://repl.it/talk/share/p-Approximations-in-C/33461
Credit to @NoelBryan, @TheForArkLD , @Warhawk947 , and @LizFoster for inspiring these approximations. Most of these use the Nilakantha Series, although I also use the arctangent method (multiplying the radian arctangent of 1 by 4 to get pi and getting the arctangent with an infinite series) in three of them (Python, Node, and C).
I don't know currently which one is next. If you have any suggestions, please let me know! I would prefer to save esolangs for last. Some examples for ideas for the next ones are like Quil, OCaml, Tcl, etc.
By the way, I'm starting to run out of languages, so please suggest any you would like to see me do. There are now no official languages left other than esolangs, but there are some other languages (like OCaml, Quil, etc.) that can be found using the method in my tutorial at https://repl.it/talk/learn/How-to-Get-a-List-of-All-Replit-Langauges/34411. Though, I am saving esolangs for last (or close to last). After I finish the approximations using the Nilakantha Series, I will go through all of the languages again and do another algorithm (I'm thinking either trapezoidal sums or Monte Carlo). I will also then make a tutorial on transpiling programming languages.
List of all other languages on Repl.it that I have not done that I plan to at least eventually do:
BrainF - Esolang
Emoticon - Esolang
Bloop - Esolang
Unlambda - Esolang
Quil - Quantum Instruction Language
Reason - New syntax of OCaml
WASM - WebAssembly
NASM - Assembly; still working on it
List of languages that I might decide to do, but likely will not:
C++ - Object Oriented C
Deno - Alternative to Node
Flow - JS Type Checker
TypeScript - Another, more well-known JS type checker.
List of languages that I will not do:
BASIC - Already did QBasic and there is not a large enough difference to make me decide to do BASIC as well.
Roy - There is not enough documentation online to do Roy. (I can find pretty much nothing)
Static - Static does nothing... It is just a makefile and it does nothing when you run it.