!!!Assembler
!!Assembler for Atari Computers
* [Atari Assembler Editor]
* [Atari Macro Assembler and Program-Text Editor CX8121]
* [EASMD]
* [MAC/65|Mac65]
* [BUG/65|Bug65]
* [Dunion's Debugging Tool (DDT)|DDT]
* [Extended Dunion's Debugging Tool (ExDDT)|Extended_DDT]
* [Synapse Assembler]
* [Atmas II]
* [Edit 6502]
* [Bibo Assembler]
* [130XE+ Makroassembler V2.1 mit MyDOS 4.50 (1991)]
* [A65 Assembler source code and binary|A65_12.ZIP]

!!Cross-Assembler
* [WUSDN IDE|http://www.wudsn.com/index.php/ide] ; smartest assembler available
* [ATASM|http://atari.miribilist.com/atasm/] ; Mac/65 compatible cross assembler