Added some more ASM languages and Squirrel.

a/assembler_fasm_dos.asm

@@ -0,0 +1,16 @@
+format MZ
+
+entry .code: start
+
+segment .code
+start:
+	mov ax, .data ; put data segment into ax
+	mov ds, ax    ; there, I setup the DS for you
+	mov dx, msg   ; now I give you the offset in DX. DS:DX now completed.
+	mov ah, 9h
+	int 21h
+	mov ah, 4ch
+	int 21h
+
+segment .data
+	msg db 'Hello World', '$'

a/assembler_masm_dos.asm

@@ -0,0 +1,17 @@
+; 16 bit dos assembly
+.model small
+.stack
+.data
+    message   db "Hello world!", "$"
+.code
+    main    proc
+        mov   ax,seg message
+        mov   ds,ax
+        mov   ah,09
+        lea   dx,message
+        int   21h
+        
+        mov   ax,4c00h
+        int   21h
+    main    endp
+end main

a/assembler_nasm_freebsd.asm

@@ -0,0 +1,31 @@
+section	.text
+    global _start			;must be declared for linker (ld)
+
+_syscall:		
+	int	0x80		;system call
+	ret
+
+_start:				;tell linker entry point
+
+	push	dword len	;message length
+	push	dword msg	;message to write
+	push	dword 1		;file descriptor (stdout)
+	mov	eax,0x4		;system call number (sys_write)
+	call	_syscall	;call kernel
+
+				;the alternate way to call kernel:
+				;push	eax
+				;call	7:0
+
+	add	esp,12		;clean stack (3 arguments * 4)
+
+	push	dword 0		;exit code
+	mov	eax,0x1		;system call number (sys_exit)
+	call	_syscall	;call kernel
+
+				;we do not return from sys_exit,
+				;there's no need to clean stack
+section	.data
+
+msg	db	"Hello, world!",0xa	;our string
+len	equ	$ - msg			;length of our string

a/assembler_nasm_linux.asm

@@ -0,0 +1,18 @@
+section	.text
+    global _start			;must be declared for linker (ld)
+
+_start:					;tell linker entry point
+
+	mov	edx,len	;message length
+	mov	ecx,msg	;message to write
+	mov	ebx,1	;file descriptor (stdout)
+	mov	eax,4	;system call number (sys_write)
+	int	0x80	;call kernel
+
+	mov	eax,1	;system call number (sys_exit)
+	int	0x80	;call kernel
+
+section	.data
+
+msg	db	'Hello, world!',0xa	;our string
+len	equ	$ - msg			;length of our string

b/brainf*ck.bf

@@ -1 +0,0 @@
- ++++++++++[>+++++++>++++++++++>+++>+<<<<-]>++.>+.+++++++..+++.>++.<<+++++++++++++++.>.+++.------.--------.>+.>.

s/squirrel.nut

@@ -0,0 +1 @@
+print("Hello World!");