AIDE is a file integrity checker that supports regular expressions. Licensed with GPL.

A tutorial on character code issues in digital processing and transfer of text data, on the Internet or otherwise. Includes tables and a detailed listing of control codes. In English and Finnish.

Various disk and graphics utilities for the VIC-20, C64 and Amiga.

A portable debugger for the Scheme language. It presents the user with an interactive interface that lets him or her examine and change values of variables, set breakpoints, and single step evaluation. Psd is designed to be run within GNU Emacs, which...

Selection of links to material on Usenet. Editorials by Jukka explaining the workings of Usenet and the reasons for certain conventions.

Section describing meta tags. Discusses purposes, typical rendering, basic syntax, possible attributes, notes, and links to further references.

An explanation of HTML syntax, tutorials and a tag list.

A review of the HTML authoring problems caused by some special characters which belong to MS Windows character set but not to ISO Latin 1. Includes technical details and substitution tables. In English and Finnish.

In-depth resource on using HTML and CSS to present various types of equations.

Presentation of the administered Finnish hierarchy: spam and binary cancel policy, control messages and the associated PGP key as well as the checkgroup list.