Software   Over the years I have written a variety of software, mostly because existing programs did not give me the functionality that I was looking for. On this page you find a selection that may be useful to other people as well. Feel free to download any of the programs, they are all provided as freeware under the condition that you do not redistribute them commercially. There is just one restriction: the programs are provided 'as is'. If they do not work properly on your computer, or if they produce imperfect results, don't blame me. Except for Sesamoid, Kill'em, TalkieTones, and the GIF file builder, the programs were mostly debugged on one computer only, so I give no guarantees with respect to cross-platform functionality. Still, I do appreciate it if you let me know about problems that you encounter. Some of the older stuff is written in assembler code. For these programs you can download both the source code and the executable program. Aldfaer This doesn't really belong here, but I didn't know where else to put it. Anyway, these pages are relevant for Dutch people only, so there is no English version. Stamboom generator is een sjabloon voor het genealogie-programma Aldfaer. Dit sjabloon genereert de data voor een grafische stamboom. Deze data kan verder verwerkt worden met het freeware programma dot. Voorgeslacht generator is een sjabloon voor het genealogie-programma Aldfaer. Zoals de naam al aangeeft genereert dit sjabloon een kwartierstaat, stamreeks of matrilineaire reeks, desgewenst met personen-index, plaatsen-index en bronnen-overzicht. Windows / HTML / JavaScript A little bit of everything. The Windows part not surprisingly requires a 32-bit Windows platform to work, but the HTML / JavaScript part should work with any modern web browser. Vroom is a client-side search engine. It was developed to be used in web sites on a local file system, where there is no server to run a more commonly used server-side search engine. It is not intended for use with Internet or intranet sites (although it can be used for this). Windows programs These programs are written in C++ under Windows 98. But they should work fine on any 32-bit Windows platform. Sesamoid overlays the screen output of map, atlas, CAD or other programs and lets you draw routes and calculate their length. Originally developed to be used with geographical maps, Sesamoid can write the routes to file in the form of waypoint lists. Kill'em is a program that automatically kills the pesky pop up windows that some web sites throw at you. You learn it to distinguish between wanted and unwanted pop ups as you are surfing the web. The program works with Netscape Navigator, Internet Explorer and similar browsers. TalkieTones is a program to communicate with text phones that operate according to the Dutch text phone standard. You can use it to exchange text in two directions, or in one direction only with voice communication in the other direction. TalkieTones is een programma om te communiceren met teksttelefoons die werken volgens de Nederlandse teksttelefoon-standaard. Je kunt het gebruiken om in beide richtingen tekst te versturen, of voor tekst-communicatie in één richting en stemgeluid in de andere richting. 16-bit Windows programs These programs are written in C++ under Windows 3.11. Now, in theory anything that works under 16-bit Windows should also work under 32-bit Windows (Windows 95, 98, NT4, ME or 2000). At least that is what Microsoft would like us to believe. But reality and theory are often different things ... The GIF file builder constructs any type of image stream that the GIF standard allows. Starting with plain images without any frills, you can combine these in space and in time to create even very complex image sequences. Your web pages will never look the same again! But you do need a screen resolution of at least 800x600 to run the program satisfactorily. The pocket calculator can work in two modes. In the normal mode it operates as a regular scientific calculator, whereas in the logic mode it performs logic operations on 1 to 32 bit wide words. Input and output of numbers can be done in any number base from 2 (binary) to 16 (hexadecimal). The TAN manager is only of interest if you have an account with the Dutch Postbank and use their Girotel package, utilizing transaction numbers (TAN) to verify that you really are who you say you are. The TAN manager encrypts these numbers and stores them in a more elaborate way than the sheet of paper that the Postbank provides you with. The user interface is in Dutch. Excel spreadsheets These spreadsheets were written in Excel, the most recent one using Excel 2000. But it probably works fine in older versions as well. The fractal generator is an application that the developers of Excel probably did not have in mind for their package. It creates graphical images of a certain type of fractals that can be constructed by linear transformations: rotations, mirror operations, multiplications and translations. The POV-Ray sphere_sweep design aid is a graphic aid to quickly verify the shape and key parameters of a cubic spline. It is targeted at the use of such splines with POV-Ray's sphere_sweep object, in particular for the creation of cables and the like. If you are not a POV-Ray user then this spreadsheet is likely of no use to you. DOS programs Once upon a time, long ago, Bill Gates founded his fortune on the DOS operating system. And that is what these programs are witten for. The first one is written in Pascal, the other two in assembler. Amazing enough even the latest Windows operating systems can still handle DOS programs, although it makes little or no sense to run the IPP or clock programs under Windows. The Mandelbrot program puts the entire Mandelbrot fractal on the screen and then allows you to zoom in on any part of it (peculiarly enough I have never implemented a zoom out function). Beware, the program is calculation intensive and it requires a math co-processor if your computer uses a 486SX or lower processor. The IPP input pre-processor extends the capabilities of the DOS command line processor. It maintains a stack of recent commands and allows you to browse through this stack, avoiding the need to retype complex commands. IPP also allows you to pick up text from the screen with the mouse and add that text to the command line. And IPP gives you the possibility to add user defined commands to the set of standard DOS commands. The on-screen clock puts a digital clock in the top right corner of all DOS text screens. Does the above list not contain what you are looking for? Have a look in the Try this section where some freeware programs written by other people are discussed.

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