Over the years, I have authored and contributed to a number of free software projects, some of which originate from research projects.
My main projects
- An old-school roleplaying game engine
After almost 10 years in the making (not non-stop though!), I have decided to finally upload this to github. It's not finished, but a demogame that comes with it is somewhat playable.
- A tool set to generate LTL monitors
The LTL3 tools are a collection of programs that convert a given LTL formula into a finite-state machine, which can be used as a monitor for that formula. Basically, this is a tool for runtime verification.
Mailfilter - An anti-spam utility
Mailfilter is a flexible utility for UNIX (-like) operating systems to get rid of unwanted SPAM mails, before having to go through the trouble of downloading them into the local computer. It offers support for one or many POP accounts and is especially useful for dialup connections via modem, ISDN, etc. If you're running a more or less standard Linux or BSD distribution, chances are that Mailfilter is already preconfigured and packaged for you.
Other projects, I've been involved with or have supported
ABsolver - Arithmetic-Boolean Constraint Solver
ABsolver is a system library and stand-alone program for solving mixed-domain, i.e., (non-linear) arithmetic-boolean constraints. It provides a common interface for various constraint and SAT-solvers.
Theorem Prover for Hierarchic Superposition with Weak Abstraction
Beagle is an automated theorem prover for first-order logic with equality over linear integer arithmetic. It accepts formulas in the FOF, TFF, and TFF-INT formats of the TPTP syntax.
My contribution are solvers for linear arithmetic.
GCC - The GNU Compiler Collection
I contributed to the GNU Compiler Collection which offers optimised code generation for a large number of different hard and software platforms. I have picked up and contributed work mainly to do with tail call optimisation, which ended up in version 3.4 of GCC.
Nazghul - A roleplaying game similar to Ultima 5
Recently, I'm reliving glorious memories of my childhood by contributing a wee bit of GNU-tools wizardry to the wonderful project Nazghul. Nazghul is a computer roleplaying game similar in style to Ultima 4 and 5. Great programmers, great game, so please check it out!
- SALT - Structured Assertion Language for Temporal Logic
SALT is a general purpose, programming-language-like assertion and specification language for temporal logic. As such it includes specification techniques for both untimed and timed reactive systems, a compiler, and a web front-end. (The industrial counterpart, so to speak, is IEEE1850, PSL.)
Minor code snippets and abandoned projects
You might also like to look at my code snippets for lots of useful little bits of software that I have written over the years.