Wasn't too sure where to put this but it'll do here. Could be useful to have in the database. Saw it on the hl2.net forums.
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Textures/Reference
http://aqmd.action-web.net/res/skies.shtml
http://art.net/Studios/Visual/Jerem...ture/index.html (occasionally 404s, many royalty-free
http://astronomy.swin.edu.au/pbourke/texture=http://astronomy.swin.edu.au/pbourke/texture/index.html
http://brimstone.brimstone.com/quake2/local/env/index.html
http://desktoppublishing.com/backg-tex.html
http://digitalcraftsman.com/textureBin/textureBin.htm (many free very high-quality non-tiling textures)
http://digital-eel.com/surface/files.htm
http://fps.brainerd.net/fpstextures.htm
http://freshteam.telefragged.com/te...aeda/arctic.zip (snow and ice textures and skyboxes)
http://gamefreaks.net/defrag/textures.html
http://home.telefragged.com/wally/m...y/wallymade.htm
http://planetquake.com/hfx/textures.html
http://planetquake.com/lycon/misc.htm
http://planetquake.com/quint/framedx_en.html#textures
http://planetquake.com/simland/ (skyboxes)
http://shaderlab.com/
http://wings.buffalo.edu/AandL/Maecenas/
http://www.3dcafe.com/asp/textures.asp
http://www.abandoned-places.com/ (hard to navigate)
http://www.afflict.net/
http://www.art.net/~jeremy/photo/public_texture/ (about 800 original royalty-free high-quality non-tiling photo JPEGs)
http://www.badmeat.com/ (textures in map .pk3s)
http://www.bc.edu/bc_org/avp/cas/fnart/arch/
http://www.bitbrush.com/free.html (samples)
http://www.culturedstone.com (natural and dressed stone, tiling. READ copyright!)
http://www.crack.com/golgotha/browse.html (60Mb zip, 2000+ public domain textures)
http://www.dailydesaster.com/eskimo...ck/textures.htm
http://www.elore.com/elore04.html (hard to navigate, scattered photos)
http://www.elore.com/Gothic/contents.htm (hard to navigate, scattered photos)
http://www.eye.box.sk/ (some non-tilable, not powers of 2)
http://www.greatbuildings.com/
http://www.grsites.com/textures/ (web textures, tileable, many 128x128 JPEGs suitable for Q3A)
http://www.ibiblio.org/propaganda/ (over 800 512x512 tileable web background textures)
http://www.imageafter.com/index.php (large, high-quality photos and (non-tiling) textures)
http://www.medievalarthistory.com (links to medieval architecture sites)
http://www.marlinstudios.com/ (commercial, tiling)
http://www.massassi.net/mats/ (JK/MotS mats)
http://www.newlogicmedia.com/subverse/
http://www.newyorkcarver.com/cathedrallinks.htm
http://www.oboylephoto.com/ruins/index.htm (great site for map/texture ideas!)
http://www.omni-stone.com/Products.html (none tileable)
http://www.photovault.com/ (photos, none tileable, copyright restricted)
http://www.photoessentials.com (commercial, photos, none tilable, samples watermarked, good for ideas)
http://www.pitt.edu/~medart/index.html
http://www.planethalflife.com/studio/ (8-bit GIF/PCX, 24-bit BMP, tiling)
http://www.planethalflife.com/wadfather/ (site unnavigable without JavaScript)
http://www.planetquake.com/baneforge/files.htm (Q3A skins, look under "Misc." for some textures)
http://www.planetquake.com/bighouse/textures.asp (1000-2000 Q3A, maybe more)
http://www.planetquake.com/davebulow/textures.htm
http://www.planetquake.com/ikq/art.htm#ikbaseq3 (Q3A, some CTF, also Q2 textures elsewhere on page)
http://www.planetquake.com/meanarena/Q3_textures.html (about 300 Q3A tiling, also Q2 at
http://www.planetquake.com/meanarena/textures.html
http://www.planetquake.com/mrclean/2dart.shtml (over 180 Q3A, about 60 Q2, tiling; 3 skyboxes)
http://www.planetquake.com/q3radiant/textures.htm
http://www.planetquake.com/speedy/textures.htm
http://www.planetquake.com/warehouse/ (hundreds of Q1, over 100 Q2)
http://www.planetunreal.com/forest/ (BMP, PCX, UTX, WAL, JPG for various games (mainly Unreal), tiling)
http://www.planetunreal.com/texturelab/ (tileable GIFs)
http://www.planetunreal.com/ulukai/ (TGA texture set)
http://www.planetunreal.com/undulation/textures_n.htm (claimed UTX and BMP, site unnavigable without JavaScript)
http://www.q-fraggel.de/textures/textures.html
http://www.quake3world.com/editing/guides-textures.html (links to texture sites, tuts; many broken links)
http://www.signsofkoth.co.uk/q3textures.html
http://www.stone-light.com/ (pictures of stone structures and buildings; no textures found)
http://www.telefragged.com/soup/index2.html (about 15 Q2/Q3A skyboxes; use "512x512" links for Q3A)
http://www.turbosquid.com/ (free and commercial; requires some searching)
http://www.hummerdesign.com/et/resources/indy_ark/ (50-60 stills from Indiana Jones and the Raiders of the Lost Ark)
http://www.planetquake.com/berneyboy/textures.htm 2000 photorealistic textures
http://switch.to/doom2textures Rescaled/redrawn Doom textures
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Skies
http://amethyst7.gotdoofed.com/env.htm/
http://aqmd.action-web.net/res/skies.shtml
http://brimstone.brimstone.com/quake2/local/env/
http://freshteam.telefragged.com/te...aeda/arctic.zip (snow and ice textures and skyboxes)
http://www.geocities.com/-harlequin-/quake/
http://www.planetquake.com/speedy/stuff.htm
http://quake.stuff.gen.nz/
http://teamhuh.net/raven/Skybox.htm
http://www.geocities.com/-harlequin-/quake/
http://www.metacreations.com/products/bryce4
http://www.planetquake.com/warehouse/custom2.htm
http://www.telefragged.com/soup/envmaps.htm
http://www.schloerb.com/Dreamscape2/
http://www.mayang.com/textures/
http://www.animax.it
http://www.planethalflife.com/crinity/skymain.htm
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[color=orange]
Concept Art.
[color=white][url]http://www.conceptart.org[/url]
[/color][/color]
[url]http://www.artbyfeng.com[/url]
http://oboylephoto.com/ruins/index.htm