Hugs
- RISC OS port of the Hugs interpreter for Haskell, a lazy functional language.
- http://www.drobe.co.uk/archives/?directory=/ftp.uni-stuttgart.de/pub/systems/acorn/acornet/long/development/hugs/

Gofer
- RISC OS port of the Gofer interpreter for Haskell, a lazy functional language.
- http://www.wra1th.plus.com/gofer.html

Basil
- Shares BASIC libraries between programs. Overview, manual, and download.
- http://www.users.zetnet.co.uk/kappa/basil

Basalt
- Extends BASIC with new keywords. List of features, manual, and downloads.
- http://www.users.zetnet.co.uk/kappa/basalt

ArmBob
- Interpreter for a variant of Bob, a small object-oriented programming language. Documentation, examples, and source.
- http://www.wra1th.plus.com/bob/

Lua
- Two implementations of Lua for RISC OS. Downloads, documentation, and examples.
- http://www.wra1th.plus.com/lua/

Awk
- RISC OS port of the Mawk interpreter.
- http://www.wra1th.plus.com/awk/

AcornCD
- A CDDB server for RISC OS. Includes programming specifications and demonstration program.
- http://acorncd.sourceforge.net/

C Programming Information
- Guide to C programming on RISC OS. Documentation and tutorials, compilers, libraries, and downloads.
- http://www.riscos.info/

Python
- Binaries of version 2.3, RISC OS specific modules, and a "Getting started" guide.
- http://python.acorn.de/

Arm Sort
- Module which provides BASIC programmers with fast facilities for sorting arrays.
- http://www.avisoft.force9.co.uk/ArmSort.htm

32-bit RISC OS
- Developer support for the Iyonix PC from Castle Technology.
- http://www.iyonix.com/32bit/