Watchlist
http://123chan.org/rimages (rage comics, was runned by an commited person)
http://www.4chanhouse.org (an site for 4chan's board-tans)
http://analblaze.com (has some 4chan flashes somewhere)
http://dir.vyrd.net (or whats left of it, lots of good stuff here, go on the wayback machine for the screencap archive, some of it was saved there)
https://web.archive.org/web/*/images.mackanzoor.com (apparently down since 2012, but may have been up for longer seeing as the vyrd.net admin only went MIA around oct of last year, lots of images,not sure of whats left)
http://macrochan.org (just an collection of images, currently abandoned by who ever owns it possibly since 2013)
http://bibanon.org (a group of people collecting "internet folklore", mainly *chan culture, has a wiki on github dating back to arab spring on an absolute fuck ton of info, various pages are outdated, but sending a newfag here would be one of the first things you might want to do besides telling them to lurk moar)
http://tanasinn.info/wiki/Complete_History_of_4chan (timeline of happenings that go on in 4chan, various anons constantly add new info)
http://world2ch.org (info/wiki about the early days of 4chan and its parent chans)
http://web.archive.org/web/*/chanarchive.org
http://web.archive.org/web/*/4chanarchive.org(last two are more or less the same site, basicly the first major thread archive, going back too 2007, threads were archived based on popularity/upvotes, living up to the "old" method of 4chan culture archiving)
https://nik.bot.nu http://4walled.org (theses are wallpaper scrapers who get their images from 4chan boards and other sources, both obtain a bulk of images from a previous site that did something similar)
http://wiki.magicalgirlnoir.com/ (site which host info on an very popular series of threads)
swfchan.com (an /f/ archive)
https://1d4chan.org/wiki/Main_Page (/tg/ wiki)
http://4chansokuhou.blog.fc2.com/blog-category-5.html (some guy who translates 4chan threads to moonrunes hasn't been updated in a while)
https://archive.org/details/InformationLibraryAll.7z (mostly images from infothreads)
http://firstmonday.org/ojs/index.php/fm/article/view/3665/3055(some peer reviwed article about 4chan and anonymity)
https://implyingrigged.info/ (4chan cup wiki)
https://www.4chan.org/flash (Some flashes related to 4chan)
http://studionyami.com/penfifteen (an collection of very old hand archived 4chan threads dating back to 2004)
http://no-info.no-ip.info (various 4chan stuff)
http://spcows.ae2t.net (some faggots site, somewhat chan related)
http://planrawsto.blolol.com/Pix (open directory containing some 4chan images)
http://420.thrashbarg.net (some guy posting images over the span of a decade and a half)
http://tv4chan.com (replace the first part of it with the of most boards, its a kinda archive, but is basically covered in ads, but maybe something could be sifted)
http://dontclickthis.whatingods.name/ (i don't think there is a need to explain this, the domain says it all, 4chan related nonetheless)
http://kaszpir.hlds.pl (4chan shit)
http://www.lurkmore.com (4chan wiki, not sure how it compares to ed though)
http://dankmaymays.com (/s4s/ collection of images)
http://info.stylee32.net (online version of the information library, and the insta oldfag kit)
http://zaloopa.slonique.net/ http://me-tan.wtfux.org/ (open directories hosting chan related stuff)
https://archive.org/details/cromartie4chan (a single gif, not sure if even important or not)
https://archive.org/details/4chanGatorsThread
https://archive.org/details/4chanirclogarchive
https://mega.co.nz/#F!bcF2mbpY!alnEtkqSx0ri93Ugs1RjUA (museum of /x/, a bunch of /x/ related stories and threads)
http://bibanon.org/everything-shii-knows/ (a mirror of the now defuct everything shii knows, a wiki run by the formor mod of 4chan and current higher up on wikipedia, shii. this wiki actually inspired the creation of bibanon)
http://web.archive.org/web/*/http://4x13.net/* (not too sure what exactly this holds, but it apperently has some chan stuff hiding in it)
http://itachan.org/ (some Spanish chan wiki)
http://www.diochan.com/ (a spanish chan, has an /rs/ clone)
https://docs.google.com/document/d/1t10VI-sccy1CfAeMZHwmCS_7agIHFo_B5ipMjzsMtTg/edit?pref=2&pli=1 (large "database" of chan related sites with details of what they are like)