Looking around the source you’ll find numerous references to Acorn’s internal project codenames. Some are given here, with approximate release dates (or development dates if they were never released). Those in need of confirmation are marked with question marks.
Avon | A3000 | 1989 |
Perth | A4 | 1992 |
Brisbane | A5000 | 1991 |
Fox | A540 | 1990 |
Adelaide | A3010 with mezzanine board | 1992 |
Heron ‘C’ | A3010 with ARM250 | 1992 |
Heron ‘E’ | A3020 | 1992 |
Roadrunner | A4000 | 1992 |
Medusa | Risc PC | 1994 |
Aquarius | C/C++ programming environment | 1995 |
Project Black | RISC OS 3.60 | 1995-6 |
Phileas | The first generation of the Acorn web browser, Bookworm | 1995 |
Phoenix | The second generation of the Acorn web browser, Browse | 1996-8 |
Omega | First-generation NC hardware by ANC division | 1996-7? |
Spinner | First-generation NC software by ANC division | 1996-7? |
Morris | A7000+, RISC OS 3.71 | 1997 |
Phoebe | Risc PC Mk II | 1997-8 |
Ursula | RISC OS 4.00 (crippled developer release retroversioned as 3.8, see branch Ursula_RiscPC) | 1997-8 |
Rachel | StrongARM processor card for Phoebe | 1997-8 |
Chandler | IOMD2 for Phoebe | 1997-8 |
Monica | PCI bridge for Phoebe | 1997-8 |
Galileo | The next generation operating system that never was | 1997-9 |
Lazarus | Internet TV | 1999-2000 |
Tungsten | Iyonix PC | 2002 |
Blue | RISC OS 3.5? | 1992 |
Buffy | RISC OS 4? | 1999 |
Customer | Generic phrase replacing confidential names that cannot be released to the public | Any |
Mostly based on Matthew Hambley’s page , with additions.