Introductions: Basic places to start on the .onion network. Includes indexes and related websites.
 
ion's Hidden Wiki (Traditional wiki after Matt's went down) - The original Hidden Wiki is back up! It's a little outdated but it still contains all of it's misc. pages: http://kpvz7ki2v5agwt35.onion/wiki/index.php/Main_Page
noreason's Hidden Wiki Mirror - ion mirror: http://fkyvwpu7ccsorke2.onion/mirrors/-thw/-The%20Hidden%20Wiki%20July%202012/kpvz7ki2v5agwt35.onion/wiki/index.php/Main_Page.html
Evil|Wiki - Open-edit Wiki categorized differently than the traditional THW. Has many exclusive pages as well. Devoid of vandalism. Looks much nicer than many other mirrors: http://wvk32thojln4gpp4.onion/wiki/index.php/Main_Page
Censored Wiki - A censored Hidden Wiki mirror without cp/jailbait hosted on Freedom Hosting. Maintained by TriPh0rce and many other onions: http://3suaolltfj2xjksb.onion/hiddenwiki/
Hackbloc's Hidden Wiki Mirror - User edited mirror. Useful but vandalized by scammers often: http://xqz3u5drneuzhaeo.onion/users/hackbloc/index.php/Mirror/kpvz7ki2v5agwt35.onion/Main_Page
Hidden Wiki Mirror - Very heavily outdated. Last modified October 2011. Use if you have to: http://7jguhsfwruviatqe.onion/index.php/Main_Page
Core.onion - The long-standing introduction place for Tor: http://eqt5g4fuenphqinx.onion/
TORDIR - User-submitted links. Can rate sites and create accounts as well as well: http://dppmfxaacucguzpc.onion/
Sites Deep Web - Uncategorized list of links: http://ekwreugkil5ncyyh.onion/
Torlinks - Fast, moderated, and up-to-date without censorship. Essentially a mirror of THW but not in the Wiki format: http://torlinkbgs6aabns.onion/index.php
OnionList - Another Hidden Wiki ripoff like Torlinks: http://jh32yv5zgayyyts3.onion/
Start Book - Another way to keep track of bookmarks and favorites: http://53otrkyvae462lhb.onion/
 
 
Search engines: "Google" for Tor. Search engines are generally much more unreliable. I suggest using indexes. They're nice for the novelty though.
 
DuckDuckGo - Also an awesome clearnet search engine that respects your privacy. This doesn't actually search for Hidden Services, but it's similar to searching with a proxy: http://3g2upl4pq6kufc4m.onion/
DeepSearch - An alternate search engine that indexes Hidden Services: http://xycpusearchon2mc.onion/
 
 
Bitcoin Laundry: Services for Bitcoin, a decentralized (mostly) anonymous currency used in Tor. Obscure your Bitcoins' history. Please research laundry services before you utilize them!
 
Bitcoin Fog - I had a chance to test this out and it is legitimate. It's a great automated washing service: http://fogcore5n3ov3tui.onion/
OnionBC - Laundry service and wallet with sign-ups: http://6fgd4togcynxyclb.onion/
(BitMix and TORWallet are scams.)
 
 
Media sharing: Download or maybe upload media content.
 
Ebooks - Random assortment of ebooks: http://pwjxmvlir72hep5u.onion/
The Anarchism Library Onion-Mirror - Mirrors books from The Anarchist Library: http://4zeottxi5qmnnjhd.onion/
QicPic - Host images: http://xqz3u5drneuzhaeo.onion/users/qicpic/
The Bomb Shelter - Back up your files: http://ntoibame4iky6xhv.onion/
TorShare - Upload files: http://oukryuqqc7ffenin.onion/
Sky Fortress - Encrypt and upload files: http://shxdhomhggy3bjrn.onion/skyfortress.php
Onionweb filehosting - Upload/backup files. Requires you to split files into rars: http://3fnhfsfc2bpzdste.onion/
NoReason's Site - Has loads of info and pdf files on different subjects. Sporadic uptime. It's an amazing site: http://fkyvwpu7ccsorke2.onion/
Onionweb Filehosting - Non-CP. Upload rar, zip, etc: http://3fnhfsfc2bpzdste.onion/
sTORage - Public file hosting. No CP. Read-only now: http://utovvyhaflle76gh.onion/
ES Simple Uploader - Hosts images, docs, etc: http://i7hknwg4up2jhdkx.onion/
LiberaTor - Military, anarchy, weapons, etc stuff: http://p2uekn2yfvlvpzbu.onion/
Tard's Library - User-run ebook site. Lots of content: http://xsin4xbme24aatvk.onion/
The Tor Library - Over 48GB of books on all kinds of subjects: http://am4wuhz3zifexz5u.onion/
Lossless Audio Files - Music; great sound quality: http://wuvdsbmbwyjzsgei.onion/
Fenergy - Has some ebooks and links on energy resources: http://htm3iyhkfq5pwisy.onion/fenergy/
The Pirate Bay - The .onion mirror of The Pirate Bay. If TPB is censored in your country, use this!: http://jntlesnev5o7zysa.onion/
 
Pastebins: Just like this one.
 
Blackbin - Basic Pastebin. Password protect: http://hvieybi6rb45wfpg.onion/
PasteOnion - Can do languages. Password protect: http://xqz3u5drneuzhaeo.onion/users/boi/
TorBin - Russian Pastebin: http://kvbu63gupbad5lyw.onion/
 
 
Hosting websites: Information for .onion websites.
 
Freedom Hosting - Attacked by Anonymous, hosts a huge portion of .onion sites. Currently, invite only. Excellent uptime. GUI file manager: http://xqz3u5drneuzhaeo.onion/
Torhost.onion - Newer free hosting service. SFTP-accessible. Supports PHP and SQLite: http://torhostg5s7pa2sn.onion/
Pachinco's WebHosting Service - Supposedly offers web hosting: http://olfr5bg4qeliapk4.onion/
Liberty's Hackers - Offers phpmyadmin service with strict rules against illegal content: http://3vnjj7h6c6vw2yh5.onion/hello.php
Flinch Host - Just an e-mail listed. May offer web hosting. Nothing confirmed: http://22gdwwknxr2lfyzx.onion/
Tor WebDesign Guidelines - Doesn't host content, but has basic guidelines for making a site: http://wf4df37hrebhwzts.onion/
See the official Tor project site on information to host your own .onion site without a third party.
 
 
Chans/Imageboards - Kind of like 4chan and the likes. MAY CONTAIN QUESTIONABLE CONTENT. See the Chan page on the Cleaned Wiki.
 
Anonchan - Birthday November 2011. Went viral after conception. Moderated by me. Random board. Pretty active: http://od6j46sy5zg7aqze.onion/
Onii-Chan - Chan run by chisquare himself. Many categories, very active: http://3fyb44wdhnd2ghhl.onion/ib/
TriChan - Good board, fairly active. Hosted by TriPh0rce. Non-CP: http://3suaolltfj2xjksb.onion/chan/
Thorlauta - Successor to Torlauta. Finnish, but has some nice added board features like a search bar: http://zqiirytam276uogb.onion/
Torchan - Birthday December 2011. Formerly an excellent community run by great staff. dgft, a delusional pedophile, took over it. Should probably avoid it: http://zw3crggtadila2sg.onion/imageboard/
Deaths: RundaChan, Bobby's Board, Hidden Image Site, Tiki Board, Rainbow, AlliumIB.
 
 
Boards: Mostly SnapBBS and phpBB. Normal forums.
 
ReddiTor - The latest installment of ReddiTor, now on a reliable server with a good configuration: http://redditqlrzb7rrsy.onion/
Onionforum 2.0 - Forums for discussions. Meh discussion, Admins gone: http://65bgvta7yos3sce5.onion/
Tor Help Forum - Basic convos and helpful for newbies. Mostly dead: http://zntpwh6qmsbvek6p.onion/forum/index.php
Talk.onion - Formerly known as talk.masked. Very old, famous discussion board. Anon-posting: http://ci3hn2uzjw2wby3z.onion/
(Open to suggestions, e-mail me)
 
 
Networking: Social networking.
Torbook - Custom-designed Facebook for Tor. Has a public square for discussions: http://ay5kwknh6znfmcbb.onion/torbook/
StaTorsNet - A social network using the StatusNet script. Created 9 June 2013: http://r5c2ch4h5rogigqi.onion
Hell Online - Social network not unlike Twitter: http://u4uoz3aphqbdc754.onion/
 
 
Blogging/Revolutionary/Political: Blogs on Tor/Revolutionary sites. They pretty much go hand-in-hand in Onionland.
 
Treasury - Funding and Verification of Anonymous Crowd-Directed Actions. Movement to make an anonymous platform that will support action: vg7remvvo2dnyeo3.onion/Treasury.html
profunc** - Pro-socialist page, lots of communist files: http://vc24blsbg5ow5slk.onion/
ismism - Wide range of random topics and political gibberish: http://xqz3u5drneuzhaeo.onion/users/ismism/
Exploit - A personal page under construction managed by a hacker. Has useful tools: http://mqv7qz5rn3sf5dcx.onion/
The blog of an I2Person - Blog maintained by chisquare, owner of Nameless IRC and Oniichan: http://3fyb44wdhnd2ghhl.onion/blog/
404's Onion Domain - A personal page kept by 404, a lurker on a few Hidden Services. Includes links and a flatpress blog: http://5a7ryk7pdjflogpx.onion/
Dark Like My Soul - A blog by fancycakes. Has some of the most inspiring and beautiful poetry you will read within your lifetime, and also has technical stuff: http://ad52wtwp2goynr3a.onion/
Heidenwut - Politics, revolutionary. Interesting website: http://hq3hmoa4thdplmta.onion/
Intel Exchange - The famous snapBBS forum now runs on another BB script. Discuss corruption, surveillance, living off-the-grid, and Big Brother: http://rrcc5uuudhh4oz3c.onion/
Nekro's Onion #Dwelling# - My blog. Contains personal updates, links, and contact info: http://p43g3uyr4dhneura.onion/blog/
Tornado - User-supported blog. Polls, comments, and a forum: http://b6kpigzhrdhibmos.onion/d6/
Censor This! - A blog talking about censorship. It's not updated too often, but interesting nonetheless: http://cxoz72fgevhfgitm.onion/
Movement of torism - Radical pro-Tor support group: http://xqz3u5drneuzhaeo.onion/users/a42/
Christopher Dorner Support Page - Page in support of the police officer who went on a shooting spree for revenge: http://fkqt2iaclbsvn2tt.onion/
Exposed - The Secret Files - Whistleblowing service. Compiles dox as well: http://exposed36mq3ns23.onion/
Aryan Nation SS - Neo-nazi propoganda campaign: http://im43ja7sd4whpy72.onion/
ParaZite - Incredibly strange but well-made: http://kpynyvym6xqi7wz2.onion/
FREEFOR - A blog-ish site that contains a Wiki, forum, chat, and a couple more features: http://tns7i5gucaaussz4.onion/
Against Servants - A tl;dr about terrorism, foreign affairs, and fascist leaders: http://hlmrraadkb646464.onion/
Croat's Blog - Dead whistleblowing blog from Croatia. Shame: http://kv77v7n5kblz5tpw.onion/
Area 51 Archives - A site that allegedly will be soon setting up a Wiki to mirror some of area51archives.com's content. Dead: http://u3dqz36dcvhwd7kv.onion/
 
 
Email/Messaging: Communication.
 
Tor Mail - Email services. *@tormail.org: http://jhiwjjlqpyawmpjx.onion/
PrivacyBox - The Tor version of PrivacyBox.de. Will be closing shortly due to outdated software: http://c4wcxidkfhvmzhw6.onion/index.en.html
SimplePM - Basic PM service. No registration needed: http://4v6veu7nsxklglnu.onion/SimplePM.php
SMS4TOR - Self-detonating messaging service. Messages are deleted after viewed: http://sms4tor3vcr2geip.onion/
crypTor - Fast, convenient and easy PGP encryption: http://thah3jusrmh3rxpx.onion/
Tor YellowPages - List contact details (e-mail, SimplePM, Torchat ID) to let other Torizens get in touch with you and vice versa: http://yellowng5sqs66bk.onion/
 
 
H/P/A/V/C, Doxing, Security, etc.
 
HackBB - Forums for hacking, hosts some content. Great community: http://clsvtzwzdgzkjda7.onion/
Hashparty - Cracking site: http://3terbsb5mmmdyhse.onion/
Weird and Wonderful Old Stuff - Collection of old DOS and Windoze software: http://xqz3u5drneuzhaeo.onion/users/dosbox2/
Doxbin - A large index of personal identifying information. User-submitted. Similar to /i/ or personal army or the trends you see on Pastebin: http://doxbinumfxfyytnh.onion/
Requiem - Remove Apple's DRM security. Confirmed by many users as legitimate: http://tag3ulp55xczs3pn.onion/
Hack The Planet - Various security related content: http://chippyits5cqbd7p.onion/
Fairie Underground - Resource guide for computer security: http://faerieuaahqvzgby.onion/
Hacker's Workshop - Ebooks and other content for newbie hackers: http://pjahhqnqsups75jx.onion/
 
 
Drugs/Marketplaces: Places where you can buy stuff! Or research a particular illegal subject (ahem, drugs).
 
StExo's Lair - Reputable vendor on Silk Road who hosts static pages for many vendors on Silk Road as well as contact information. Made in the growing concern of SR's seizure: http://5uvrgtrgtwkkxsgw.onion/
Silk Road - Infamous on the news. Excellent products and (mostly) reliable sellers. This is the REAL AND ONLY LINK!!!: http://silkroadvb5piz3r.onion/index.php/silkroad/home
Black Market Reloaded - Excellent products, smaller than Silk Road. Doesn't require a fee to be a seller: http://5onwnspjvuk7cwvk.onion/
BMR Forums -  BMR-related iscussions: http://fec33nz6mhzd54zj.onion/
Silk Road Forums - SR-related discussions: http://dkn255hz262ypmii.onion/index.php
TorDrugResource - Chemistry, pharmacology, cultivation, and lots of other information on different types of illicit substances. Mostly PDFs: http://y47ylcppnh3afqk4.onion/
 
 
Pornography: Normal adult sites on Tor.
 
Starfuckers, Inc. - Celebrity nudes: http://mvdezygqixx3ucpl.onion/
Pink Meth - Read-only archive of a revenge porn site: http://pinkmethuylnenlz.onion/mirror
 
 
Misc: Cool websites that don't fit any of the above.
 
Exit The Matrix - Currently the only browser game on Tor! Take the red or blue pill. Mirrored on Nekro's Onion #Shanty#: http://p43g3uyr4dhneura.onion/blog/matrix/index.html
Salty Pad - An etherpad service. Allows you to collaborate and write .txt files with other people. Live updates: http://3fyb44wdhnd2ghhl.onion/ep/pad/
pad.riseup.net - Etherpad service by Riseup: http://ttbmov2dezfs2fln.onion/
Anonymoose Chat - Plain HTML chat. Doesn't really fit anywhere else...: http://c2hluuzwi7tuceu6.onion/
TorBackMachine - Same guy who hosted and subsequently gave up OnionForum 3.0. This is supposed to be an archive similar to Wayback Machine. Didn't appear to ever get finished and take off: http://wf74ekmmmgg2pe3v.onion/
Mirrorserver - A huge place dedicated to mirroring .onion sites and endangered clearnet sites: http://2zyakjq2hvtbg6qd.onion/
Long Live the enV2 - A beautifully weird site about the LG enV2. I've got no idea why this was created in the first place, but...: http://iwdmsbpxclyjhi4e.onion/index.html
Carson - Poems, poems, and poems: http://carson27rcopqmms.onion/
Beneath VT - Information on the tunnels under Virginia Tech: http://74ypjqjwf6oejmax.onion/
Indymedia Keyserver - A place to distribute your PGP public key: http://qtt2yl5jocgrk7nu.onion/
Human Experiments - "We go, where few dare". Supposedly collects data from human torture sessions. Obviously fake, but still a famous landmark: http://xqz3u5drneuzhaeo.onion/users/experiments/
Mariana's Web - Experience the forbidden: http://dx37guvtyy7wil3n.onion/index.html
Encyclopedia Dramatica - .onion site for ED: http://edramalpl7oq5npk.onion/Main_Page
 
 
Tor-specific links: Links mostly related to the Tor Project itself.
 
TorStatus - View Tor routers and specific details about them. Uptime, etc: http://jlve2y45zacpbz6s.onion/
media.torproject -  "media is the canonical archive of all Tor images, videos, and related  files." Need a Tor image/video? This is the right place: http://p3igkncehackjtib.onion/
torservers - Non-profit generous site that runs exit nodes. You can donate in a variety of ways: http://hbpvnydyyjbmhx6b.onion/
 
 
IRC: IRC servers. Needs an IRC client to use, such as XChat or mIRC. Default ports are 6667. Type /list in the dialog box to see all the channels.
 
OnionNet: The oldest Onionland IRC network. Not as active as it used to be.
 
ftwircdwyhghzw4i.onion - FTW
renko743grixe7ob.onion - Renko
jkpos24pl2r3urlw.onion - PB (Pedoboard)
nissehqau52b5kuo.onion - Nissehult
 
KillYourIRC Gateway: Access IRC2P (I2P's IRC)
 
lqvh3k6jxck6tw7w.onion
 
Freenode: .onion version of Freenode
 
p4fsi4ockecnea7l.onion
 
OFTC: Big support server for Tor, lots of channels, fairly active.
 
37lnq2veifl4kar7.onion
 
Nameless: Great active IRC server. Randomized nicknames by defaults, as well as tripcodes.
 
smt4wjpa3r7tkczs.onion