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Heard of Photoshop plugins? Normal mortals can and do write GPL plugins for Photoshop, including many plugins for importing and exporting different file formats. See for example, http://telegraphics.com.au/sw/ .

http://telegraphics.com.au/svn/psdparse/trunk/ ?

Hi, can you contact me privately if you're interested in getting my plugins ported to 3.0 on IRIX (assuming it supports plugins)?

I can't speak for the others, but it's certainly true that Erlang can be used in declarative ways, as its function signatures are patterns which are matched and bound at runtime. Idiomatic Erlang is therefore much shorter then ordinary imperative code (Java, C, ...), some people have estimated by a factor of 4-10.

For an example of declarative style, see my simple minded Tic-Tac-Toe Erlang web application - for example, ttt.erl.

• Various Photoshop filters and file formats
• Code for recursive subdivision of quadratic and cubic Bézier curves
• Bugzilla quip database
• PDP-8 and DG Nova assembler
• Erlang demo web application (Tic-Tac-Toe)
• Simple expression parser
• Example code for Huffman compression
• Photoshop plugin for ICO/favicon format (very popular)
• Jabber bots such as Subversion commit notify
• PDP-11 backend for retargetable lcc compiler
• ATA(PI) driver software for Microchip PIC18 (PIO)
• Photoshop PSD/PSB format extraction (including metadata in XML) and recovery utilities
• Subversion/Bugzilla integration and Subversion log->RSS conversion
• Syntax highlighting rules for BlitzMax, Rez, etc
• Fast TIFF viewer for MacOS
• and others.

Well, since my code is mostly GPL, it does not have a binding warranty. But my policy (as with many other open source producers) is to fix bugs at no cost to the user; so in effect, open source software typically makes the same promise. There are probably many reasons why this is so, not least of which is simple pride in workmanship and desire to maintain a reputation.

I found a free Photoshop plug-in that lets you open and save ICO files and you can even download the GPL source. It doesn't work as well as most of the Shareware icon editors which I gave up using after I found this tool, but it does a good enough job. I'll probably send the author $5 eventually.

http://www.telegraphics.com.au/sw/

On a side note, anyone remember the icons on SGI's Irix? I loved how they were vector based and would scale to any size. I'm surprised that many of the newer OSes don't use this idea, but I guess designing those icons are much more time consuming than filling in blocks on a 16x16 or 32x32 sized matrix.

Personally, i use PhotoShop for everything, so i figured i might as well use it for icons. There's a plugin from Telegraphics that allows you to save your image as ICO. Alright, it's not really an icon editor as you can only save one icon per ICO file, but you get to use a powerful tool..

.ico export format plugin for photoshop/paintshop
http://www.telegraphics.com.au/sw/

Win/Mac GPL FOSS

GPL Adobe Photoshop and Illustrator plugins including a growing menagerie of file formats;

sample lex/yacc infix algebraic expression parser;

PDP-8 assembler;

other stuff.

So far no dates but I remain optimistic.