| Compiler | Language | Author | Publisher | Version | Format |
|---|---|---|---|---|---|
| MPW Cross Development Tools | ?? | ?? | Golden Orchard CD | (various programs included) | ISO Download |
| Cortland Programmer's Workshop | Assembly | Mike Westerfield | ByteWorks | Last Release | Website |
| Merlin 16+ | Assembly | Glen Bredon | Roger Wagner Publishing | v. 4.08 | Image & Manual Download |
| Merlin 32 | Assembly | Brutal Deluxe | Brutal Deluxe | v. 1.0 | Website |
| Merlin 32 - Community Builds | Assembly | Brutal Deluxe | Open Source | v. 1.1.9 | GitHub |
| MPW compatibility layer (for IIgs assembly on Mac?) |
Assembly | ksherlock | Open Source | v. 0.7.2 | GitHub |
| NinjaForce Assembler | Assembly | NinjaForce | NinjaForce | v. 2.1.4 | Website |
| NinjaForce Assembler Documentation | Assembly | NinjaForce | NinjaForce | v. 2.1.4 | Documentation |
| NinjaForce Assembler ShrinkIt Archive | Assembly | NinjaForce | NinjaForce | v. 2.1.4 | SHK Download |
| Orca/M (Part of Opus II by ByteWorks) | Assembly | Mike Westerfield | ByteWorks | BWGS-04 | Store Website |
| Apple IIgs BASIC (Unreleased and poorly implemented) | BASIC | APDA | Apple Computer, Inc | v. 1.0b4 | 2MG Download |
| GSoft BASIC | BASIC | Mike Westerfield | ByteWorks | - | Image & Manual Download |
| TML BASIC | BASIC | TML Systems, Inc | TML Systems, Inc | - | Image & Manual Download |
| Orca/C (Part of Opus II by ByteWorks) | C | Mike Westerfield | ByteWorks | BWGS-04 | Store Website |
| Cadius (ProDOS Disk Image Utility) | N/A | Brutal Deluxe | Brutal Deluxe | v. 1.1.9 | Website |
| Cadius (ProDOS Disk Image Utility) - Community Builds | N/A | Brutal Deluxe | Open Source | v. 0.0.0 | GitHub |
| Complete Pascal / TML Pascal | Pascal | TML Systems, Inc | TML Systems, Inc | - | Image & Manual Download |
| Orca/Pascal (Part of Opus II by ByteWorks) | Pascal | Mike Westerfield | ByteWorks | BWGS-04 | Store Website |
What is the Apple IIgs?
You should really check out the nicely curated list at http://www.whatisthe2gs.apple2.org.za/programming-applications.
They have a lot of information on compilers for different languages, as well as many available disk images and manuals.
