you could use Photofiltre(7 should be the free version), Paint.net, Photostudio(worked for me) 

I believe there's some pixel art apps, and some open source recreation of deluxe paint floating around. 

Don't know why Paint.net(free) is so underestimated, it has almost all the Paintshop features 

fuck's sake that was a lot of work just to install the base for arch linux. 

Problem with Photoshop, GIMP, Paint.NET, etc. is that they have almost no concept of a 256 color limited palette. They all basically suck for anything other than 24 bit or higher.

Load a bitmap of any random Quake texture in one of those programs and just try:

A) Count the colors.

B) Show the palette with each color used marked.

C) Show how many pixels there are of each color.

Just doesn't seem like it should be that hard.

I think I actually managed to count colors in GIMP. I'm not going to bother re-installing Photoshop.

I had forgotten about Wally, not much help for what I need, but does a lot of useful things. Good to have. 

had heaps of problems with pre-xp versions. Didnt have too many issues with XP but did still have the occasional hiccup.

Win 7 has been working like a dream for a few years though. 

Paint Shop Pro 6 if you can find it supports loading the quake palette IIRC 

I've been using PSP 4 for years. It can't do B or C in my post above. It can at least count the colors. Can version 6 do B and C?

It's a real pain to recolor one texture to match another when you don't know which colors are actually used or how much of a given color is in the texture. 

Pretty sure this must be the Deluxe Paint re-creation that Spiney mentioned above. Horrible clunky 80s style interface but very good 256 color palette manipulation.

http://code.google.com/p/grafx2/

It has a palette "Zap" tool which let's you replace all unused colors with something else, There is a palette histogram, 0-255, mouse over any column to see exactly how many pixels use that color. It's not perfect but I can work with it. 

I use PSP7 ESD. It's a full version that came bundled with, I think, PC Zone or PC Gamer on the cover disc.
If you go to oldapps.com you'll find older versions of lots of software, they should all be legal and public domain too. :) 

I don't get it, why would you want to do that?

Linux ++ :-) (I'm still stuck on windwos argh) 

Does anybody still play Quake Deathmatch? In the remake of Wishes that I'm working on, I have included the deathmatch starts at about where they were in the original, but the map is way bigger than it used to be and I'm wondering if there's any point in keeping DM supported. 

People still play deathmatch, but for the most part only a chosen few overplayed maps. It's unlikely anyone would give your map a try, so if you were to add deathmatch settings, it would be solely as a nod to the original map and the sense of among the few awesome people who still to do it to their SP levels (=than and I). ;)
Of course there also is the DMSP mod which allows you to play the DM portion of a map against monsters. In this respect, adding DM settings could make for sort of an additional game mode in a broader sense. This requires proper spawnflagging - including the monsters! 

Try QuakeWorld if you want deathmatch.
Physics might be a little different and they've added the concept of matches, but otherwise the gameplay should still be similar.
Except that you'll get owned. A lot.

that said, deathmatch spots on a single player map is generally futile. deathmatch wants many connections, loops, and alternative routes. single player, on the other hand, is typically rather linear (even with creative-but-annoying use of doors, or deathmatch-only passages).
By all means add a few spots, but I wouldn't waste too much time over it, unless you're really trying to make it a deathmatch-only map.
If the map really is large, it might be more useful to just block off the more annoying/narrow corridory bits and constrain the deathmatch players to the more arenaey areas. Yay teleporters. 

Why do some people NOT play games? I always hear about this question from the opposite side... 

Except that you'll get owned. A lot.

This. 

Okay, not quite, but close

http://www.kickstarter.com/projects/2017062404/b-go-beyond

(including obligatory dubstep) 

it's happening right now! :D 

spiney: kind of cool, but I immediately expected the wheels to rotate down to form ducted fans, disappointed that they didn't (though it appears impossible based on the wheen drive mechanism.) 

I posted my new map over an hour ago, I was hoping a couple of people would have played it by now but I guess you'll have to wait until an admin wakes up ;) 

metl: I had the same thing, kind of a shame hah, I'm sure it's not that way for a good reason though.

semi-educational timewaster:
http://geoguessr.com/ 

All my friends who don't play games just seem to see it as a waste of time. Most of my friends do play games, at least a bit. Now it's like reading. Some people go deep but most are just reading like, 50 shades of gray or Tom Clancy or whatever. Quake = David Foster Wallace, obviously. 

When I was a player, I didn't have any friends. When I was a mapper, I didn't have any friends. Now that I have stopped both, I don't have any friends.

I now spend most of my time in front of a computer screen trying to work out why I don't have any friends.

I am sure that if I work hard enough I will find the answer. 

That's a very generous review of FMB-BDG2 over in Quaddicted. Thank you. 

Doesn't play games and can't understand it.

But she loved Prince of Persia Warrior Within.