Tellurium

Tellurium is an esoteric, tape-based programming language invented in 2016 by User:M654 with code-golf challenges in mind.

History

Tellurium was originally called Brainfish, and was supposed to be a combination of brainf*ck and Deadfish. It was later renamed Tellurium.

Tellurium currently has the following commands:

Command	Meaning
>	Move one cell up the tape
<	Move one cell down the tape
e	Move ten cells up the tape
E	Move ten cells down the tape
h	Move 100 cells up the tape
H	Move 100 cells down the tape
+	Add one to the selected cell
-	Subtract one from the selected cell
/	Add ten to the selected cell
\	Subtract ten from the selected cell
"	Add 100 to the selected cell
'	Subtract 100 from the selected cell
^	Output the selected cell's value
!	Convert the selected cell's value to an ASCII character and output it
%	Converts a character in the selected sell to an ASCII value
a	Takes the selected cell and the next cell and adds them together into the selected cell
s	Takes the selected cell and the next cell and subtracts them into the selected cell
m	Takes the selected cell and the next cell and multiplies them into the selected cell
d	Takes the selected cell and the next cell and divides them into the selected cell
i	Read input and store it in the selected cell
µ	Read a string until the ~ command and store it in the selected cell
~	End a µ-command
&	Enters string manipulation mode
.	Exits the program/exits string manipulation mode
r	Reverses the selected cell's value (string manipulation mode)
u	Makes the selected cell's value uppercase (string manipulation mode)
l	Makes the selected cell's value lowercase (string manipulation mode)

Tellurium is Turing-complete, as Tellurium's commands can mimic brainf*ck's.

µHello, world!~^

i!

i>i<a!

The original Tellurium interpreter written in Python is available at GitHub here.