Here's a list of 820 cryptocurrencies. Most are dead, some were scams, and some of them are even still alive. Of the dead ones, some died for lack of interest, some due to dev abandonment, some because of cease and desist orders about trademarks, and some because the operators never intended to keep them going after the pump-n-dump.
I think maybe the initial post in this topic ought to be updated.
In several cases, several different cryptocurrencies have traded under the same symbol at different times. In several other cases, several different cryptocurrencies having exactly the same name have been released by different people.
2chcoin (2ch), 365coin (365), 42 coin (42), 66coin (66), 8coin (?), 99cents (?), Acros (ACRO), Aerocoin (?) IPO SCAM,
Aiden (ADN), Aimcoin (AIM), Aircoin (AIR), Alcohoin (ALC), Alicoin (ALI), Aliencoin (ALN), AllAgescoin (?), Allahcoin
(?), Alphacoin (ALF), AlphaOmegacoin (AOC), Altrocoin (?), Americancoin (AMC), Americoin (?), Aminacoin (?), aminacoin
(?), AmKoin (AMK), Androidtoken (ADT), Animecoin (ANI), Anoncoin (ANC), Apecoin (APE), Aphroditecoin (APH), Appcoin
(APP), AppleByte (ABY), Applecoin (APC), Argentum (ARG), Arkhash (ARK), Armoredcoin (), Asiacoin (AC), Asiccoin (ASC),
Astrocoin (ASR), Auroracoin (AUR), Australiacoin (AUS), Babycoin (BBC), Bacoin(?) BaconBitscoin (YUM), Badcoin (BAD), Badgercoin
(BDG), Bankcoin (BANK), Banknote (BN), Basecoin (?), Batcoin (BAT), Battlecoin (BCX), BBQcoin (BQC), Beaocoin (BEC),
Beatlecoin (BEA), Beecoin (BEE), Beercoin (BEER), Belicoin (BELI), Bellacoin (BELA), Bellscoin (BEL), Benjamins (BEN),
Bestcoin (BSC), Betacoin (BET), Billaume (BLL), Billioncoin (BIL), Binarycoin (BIC), Birdcoin (BRD), BitBar (BTB),
Bitcoin2.0 (?), Bitcoin2 (BTC2), Bitcoin3.0 (?), Bitcoin (BTC), Bitcoin Plus (XBC), BitcoinScrypt (BTCS), Bitcoin (XBC),
Bitcredits (?), Bitecoin (?), Bitgem (BTG), Bitgold (?), Bitinium (BTN), Bitland (?), Bitleu (BTL), Bitpeso (BTP),
Bitpug (?), BitQuark (BTQ), BitRaam (BRM), BitShares-PTS (PTS), Bitstar (BITS), Blackcoin (BC), BlackDragoncoin (BDC),
Bladecoin (BLA), BlakeBitcoin (BBTC), Blakecoin (BLC), Blitzcoin (BLTZ), Blobbycoin (?), Bluecoin (BLU), Bones (BONES),
Bonuscoin (BNS), Boomcoin (BMC), Boostcoin (BOST), Boringcoin (?), Bosscoin (BOS), Bottlecaps (CAP), Bountycoin (BOC),
Boxxycoin (BOXX), Boycoin (BOY), Brokebackmountaincoin (?), BTCtalkcoin (BCC), Bumbacoin (CLOT), Bunnycoin (BUN),
Burbucoin (BUR), Burnercoin (BURN), Butterflycoin (BFC), Bytecoin (BTE), Cachecoin (CACH), Cagecoin (CAGE), CaiShen
(CAIX), CAIx (CAIX*), Canada ecoin (CDN), Cancercurecoin (CCC), Cannacoin (CCN), Carboncoin (CARB), CarpeDiemcoin
(DIEM), Cashcoin (CASH), Casinocoin (CSC), Cataloniacoin (CATC), Catcoin (CAT), Catedoge (?), CGAnomaly (CGA), CGBullion
(CGB), Chaincoin (?), Championcoin (?), Chancecoin (CHA*), Charitycoin (CHA), Chicoin (CHI), CHNcoin (CNC), Chococoin
(CCC), Choomcoin (?), Chuckcoin (?), Cinni (CINNI), Citizencoin (CTZ), Cleanwatercoin (WATER), Cloakcoin (CLOAK),
Clockcoin (?), Clockwisecoin (?), Cloudcoin (CDC), Cnote (CNOTE), Coffeecoin (CFC), coin2.0 (NC2), coin2.1 (C2), coin2
(C2), Coin (COIN), Coincoin (CC), Coino (CON), Coinyecoin (), Colbertcoin (CC), Collegecoin (?), Colossuscoin (COL),
Cometcoin (?), Communitycoin (COMM), Communitycoin (CTC), Compasscoin (CPC), Conspiracycoin (CYC), Continuumcoin (CTM),
Coolcoin (COOL), Cooperationcoin (COOP), CopperBars (CPR), Copperlark (CLR), Copycoin (COPY), Corgicoin (CORG),
Cornerstonecoin (CCX), Cosmoscoin (CMC), Counterparty (XCP), Craftcoin (CRC), Crapcoin (CRAP), Crapplecoin (?), Credits
(CR), Credits (CRD), Creds (XXC), Cross Generation coin (XGC), CRTcoin (CRT), Cryptcoin (CRY), CryptoApples (CRA),
Cryptobits (CYB), CryptoBuck (BUK), Cryptoeagle (CREA), CryptoEscudo (CESC), Cryptogenic Bullion (CGB), Cryptographic
Anomaly (CGA), CryptoLoot (LOOT), CryptoMETH (METH), Cryptonium (CRN), CryptoStuds (?), Cthulhucoin (OFF), Cubits (QBT),
Cuntcoin (MUFF), Curecoin (CURE), Cyclecoin (CCC), Cypherfunk (FUNK), Damacoin (DMC), Darkcoin (DRK), Datacoin (DTC),
DCom (DCM), Deletecoin (DEL), Denarius (DRS), Detacoin (?), Deutsche eMark (DEM), Devcoin (DVC), Diamond (DMD), DigiByte
(DGB), Digitalcoin (DGC), Digital Commerce (DCM), Digit (DIG), Dimecoin (DIME), Dirac (XDQ), Dishercoin (?), DistroBlitz
(DB), Distrocoin (DIS), DNotes (NOTE), Dobbscoin (BOB), Dodocoin (DDC), Dogecoin (DOGE), Doggcoin (), Dollarpounds
(DPZ), Domecoin (DOME), Donationcoin (DON), Dopecoin (DOPE), Doubloons (DBL), Dougcoin (DOUG), Dragoncoin (DNC),
Dreamcoin (DRM), Dubstepcoin (WUBS), DuckDuckcoin (DUCK), Duckiecoin (?), Dvorakoin (DVK), Eaglecoin (EGC), Earthcoin
(EAC), EBTcoin (EBT), ECcoin (ECC), Ecocoin (ECO), E-currency (ISO), EdisonX3 (?), Educoin (EDU), E-Gold (?),
Einsteinium (EMC2), Ekrona (KRN), Elacoin (ELC), Electriccoin (VOLT), Electron (ELT), Electronic Benefit Transfer (EBT),
Electronic Benefit Transfer (EBT), Electronic Gulden (EFL), Elephantcoin (ELP), eMark (DEM), Embargocoin (EBG), Emerald
(EMD), Emoticoin (EMO), Emucoin (EMU), Energycoin (ENRG), Entropycoin (ENC), Eoncoin (EON), Equestrianbit (EQB),
Ermahgerdcern (EMG), Eternalcoin (?), eToken (ETOK), Eurocoin (?), Execoin (EXE), Exilecoin (EXN), Extremecoin (EXC),
EZcoin (EZC), FAILcoin (FAIL), Faircoin (FAC), FairQuark (FRQ), Fantomcoin (FCN), Fastcoin (FST), FastoinSHA (FSS), Fck
Banks coin (FCK), Feathercoin (FTC), Fedoracoin (TIPS), Fellatiocoin (BLO), Ferengicoin (FER), Ferretcoin (?), Firecoin
(?), Fireflycoin (FFC), Fitcoin (FIT), Flappycoin (FLAP), Floridacoin (FLC), Floridacoin (FLC, (which it shares with
Fluttercoin) ), Florincoin (FLO), Floripacoin (FLN), Fluttercoin (FLT), Forexcoin (FRX), Fourchan (?), FourtyTwocoin
(42), Foxcoin (FOX), Fractalcoin (FRAC), Fragcoin (FRAG), Franko (FRK), Fraudcoin (?), Freedomcoin (FDC), Freicoin
(FRC), Frictionlesscoin (FLC), Friendshipcoin (FSC), Frozen (FZ), Frycoin (FRY), Fuelcoin (FUEL), Furrycoin (FUR),
Gaelcoin (GAC), Galaxycoin (GLX), Galleon (GLN), Galtcoin (GLT), Gamecoin (GME), Gamerscoin (GMC), Gasolinecoin (DZL),
Gatescoin (GTC), Gaycoin (GAY), Genecoin (?), Genesiscoin (GNS), Geocoins (GEO), Germanycoin (GER), Ghostcoin (GHC),
Giarcoin (GIAR), Giftcoin (GFT), Gil (GIL), Girlcoin (GIRL), Givecoin (GIVE), GlobalBoost (BST), Globalcoin (GLC),
Global Denomination (GDN), Globecoin (GLOBE), Globe (GLB), Glyphcoin (GLYPH), Goatcoin (GOAT), Gold Bars (?), Goldcoin
(GLD), Gold Pressed Latinum (GPL), Gollumcoin (GLM), Goodcoin (GOOD), Goxcoin (GOX), GPUcoin (GPUC), Grain (GRA),
Grandcoin (GDC), Granitecoin (GRN), Graphene (GRP), Gravycoin (?), Greececoin (GRCE), Greekcoin (GRK), Greencoin (GRE),
Gridcoin (GRC), Groestlcoin (GRS), Growthcoin (GRW), Grumpycoin (GRUMP), Guldencoin (NLG), Guncoin (GUN), H2Ocoin (H20),
HackerNewscoin (?), Happycoin (HPC), Harmonycoin (HMY), Hashcoin (HASH), Hawaiicoin (HIC), Heavycoin (HVC), Heisenberg
(HEX), Helixcoin (HXC), Hellcoin (HLC), Herncoin (?), HighFivecoin (H5C), Hirocoin (HIRO), Hobbitcoin (HBC), HoboNickels
(HBN), HongKetocoin (HKC), HongKongcoin (HKC), Honorcoin (XHC), Horsecoin (HORS), Hotcoin (HOT), HTMLcoin (HTML),
Huatecoin (HUC), Huitong (HTC), Huntercoin (HUC), Huskycoin (HC), Hypercoin (HYC), Hypercoin (HYPER), I0coin (I0C),
icoin (ICN), Imperial coin (IPC), Incacoin (NKA), Incakoin (NKA), Infinitecoin (IFC), Informationcoin (ITC), Inkcoin
(INK), Insanitycoin (WOLF), Instapay (IPC) An IPO scam., Inven (?), Ishacoin (?), Isracoin (ISR), Italycoin (ITC),
IXcoin (IXC), Jackpotcoin (JPC), Jasoncoin (?), Jennycoin (JNY), Jerkcoin (?), Jerkycoin (JKY), Jesuscoin (JJC),
Jesuscoin (GOD), Jezuscoin (?), Joecoin (?), Joulecoin (XJO), Junkcoin (JKC), Junnoncoin (JNC), Kakacoin (KKC),
Karmacoin (KARM), Karpcoin (KARP), Karpelescoin (KAR), Kashmircoin (KSC), Keisercoin (?), Khalsacoin (?), Kiffercoin
(?), Killercoin (KILR), Kimcoin (), Kimdotcoin (), Kingcoin (), Kittehcoin (MEOW), Klingon Empire Darsek (KED),
Klondikecoin (KDC), Koindashian (KOIN), Krugercoin (KGC), Krugmancoin (?), Kryptkoin (KTK), Kudos (KDS), Kumacoin
(KUMA), Kushcoin (KHC), Latinumcoin (LAT), Leadcoin (LDC), Leafcoin (LEAF), Leaguecoin (LOL), Lebowskis (LBW),
Legendarycoin (LGD), Legitcoin (?), Lemoncoin (LMC), Leprocoin (LPC), Levelcoin (?), Libertycoin(XLB), Lightvelocitycoin
(LVC), Limecoin (LIM), LimecoinLite (LCL), Limecoins (LC), LimecoinX (LIMX), Liquidcoin (?), Litebar (LTB), Litecoin
(LTC), LitecoinPlus (XLC), LitecoinX (LTCX), Livecoin (LVC), Logicoin (LGC), Lolcoin (LOL), Lottery Tickets (TIX),
Lottocoin (LOT), Lovecoin (LOVE), Lucky7coin (LK7), Luckycoin (LKY), Lycancoin (LYC), Machinecoin (MAC), Magiccoin
(MAGIC), Magicoin (MGC), MaidSafecoin (MAID), Makicoin (MAKI), Malecoin (?), Mammothcoin (MAMM), Maplecoin (MPL),
Marinecoin (MTC), Mariocoin (?), Marscoin (MRS), Marucoin (MARU), Mastercoin (MSC), Mastercoin (MST), Mastiffcoin
(MAST), Maxcoin (MAX), Mazacoin (MZC), Mediacoin (?), Mediterraneancoin (MED), Megacoin (MEC), Megcoin (MEG), Melange
(SPICE), Memecoin (MEM), Memorycoin (MMC), Metiscoin (?), microcoin (MRC), Milancoin (MLC), Millionairecoin (MIL),
Mincoin (MNC), Minerals (MIN), Mintcoin (MINT), Mjollnircoin (MNR), Mmjcoin (?), MMXIV (MMXIV), Molecule (MOL), Monacoin
(MONA), Monero (XMR), Moneyenom (MYM), Monocle (MON), Mooncoin (MOON), Motocoin (MOTO), Mousecoin () A Malware scam -
client contained wallet stealer., MtGoxcoin (GOX), Mugatucoin (MUGA), Muniti (MUN), Murraycoin (MRY), Mutcoin (MUT),
Myriadcoin (MYR), Naanayam (NYM), Nakacoin (NKC), Namecoin (NMC), Nanotoken (NAN), Nas (NAS), Nautiluscoin (NAUT),
Nbcoin (NBC), Neocoin (NEC), Neoncoin (?) An IPO scam, Nerdcoin (NERD), Netcoin (NET), Networkcoin (NWC), Neutrino
(NTR), NewStatesmancoin (?), NewYorkcoin (NYC), Nexuscoin (?), Niuecoin (?), Noblecoin (NOBL), Noirbits (NRB),
NoirShares (NRS), Noodlyappendagecoin (NDL), Novacoin (NVC), Nucoin (NUC), Nutcoin (NUT), NXO (NXO) Fork of NXT, NXR
(NXR) Fork of NXT, Nxt (NXT), Nyancoin (NYAN), Nybble (NBL), Obama_bin_lotterycoin (?), Obamacoin (?), Ocoin (OSC),
Octocoin (888), Oilcoin (OIL), Olympiccoin (OLY), Omnicoin (OMC), Onecoin (ONC), Onioncoin (ONI), Onlinegamingcoin
(OGC), OpenSourcecoin (OSC), Orangecoin (OC), Orbitcoin (ORB), Orcacoin (ORCA), Oreocoin (OREO), Orobit (ORO), Paccoin
(PAC), Pandacoin (PANDA), Pandacoin (PAND), Pandacoin (PND), Pangucoin (PGC), Parallaxcoin (PLX), Particle (PRT),
Patriotcoin (USA), Pawncoin (PAWN), Paycoin (PYC), Peacecoin (PEC), Peercoin (PPC), Penguincoin (PENG), Pennies (?),
Peoplecoin (PPL), Pesetacoin (PTC), PetroDollar (PD), Phicoin (PHI), Philosopher Stones (PHS), Phoenixcoin (PXC),
Photoncoin (PHO), Photon (PHO), Picoin (?), Pieces (?), Piggycoin (PIG), Piggycoin (PIGGY), Pikacoin (PIKA), Piniumcoin
(PNC), Pinkcoin (PC), Piratecoin (PIR), Pixelcoin (PXL), Platinum Bars (?), Platinum (PT), Playtoken (PLT), PLNcoin
(PLN), Pokercoin (POK), Polcoin (PLC), Polishcoin (?), Polycoin (?), Popcoin (POP), Populacecoin (POC), Popularcoin
(POP), Potcoin (POT), Poundcoin (PUK), Powercoin (POW), Powercoin (PWC), Premine (PMC), Primcoin (?), Primecoin (XPM),
Procoin (PCN), Prospercoin (PRC), ProtoShares (PTS), Pwnycoin (PWNY), Pxlcoin (PXL), QQcoin (QQC), Quackcoin (?),
Quarkbar (QB), Quark (QRK), Quazarcoin (QCN), Qubit (Q2C), Quebecoin (QBC), Quick Quick coin (QQC), Quora (QUORA),
Rabbitcoin (RBBT), Radioactivecoin (RAD), Rainbowcoin (LGBT), Rainbowgoldcoin (RAIN), Rapidcoin (RPD), Rastacoin (RTC),
Ratcoin (RATC), Realcoin (REC), Redcoin (RED), Reddcoin (RDD), Ricecoin (?), Richcoin (RCH), Riecoin (RIC), Rightcoin
(RTC), Ringo (RIN), Ripple (XRP), Risecoin (?), Rocketcoin (ROC), RonPaulcoin (RPC), Rosecoin (?), Rotocoin (RT2),
Royalcoin (RYC), Rubycoin (RBY), Rubycoin (RUBY), Rupaycoin (RUP), Saffroncoin (SFR), Sailcoin (?), sambacoin (SMB),
Sapphirecoin (SPH), Saturncoin (SAT), Savecoin (SPC), Savingcoin (SAV), Saw (SAW), Scamcoin (SCC), Scoin (SCO), Scotcoin
(SCOT), Scotcoin (SCT), Secondscoin (?), Securecoin (SRC), Seedcoin (SDC), Serracoin (SRR), Sexcoin (SXC), Sha1coin
(SHA), SHAcoin (SHA), Sharecoin (SHARE), Shares (?) Apparently a pure IPO scam., Sherlockcoin (SHC), Shibecoin (SHIBE),
Shillingcoin (?), Shopcoin (SHOP), SiliconValleycoin (XSV), Silkcoin (SC), Silkcoin (SILK), Silver bars (?), Silvercoin
(SRC, before Securecoin had it), Silvioberluscoin (?), Skeincoin (SKC), Skycoin (SKY) This is the second "skycoin" to be
launched., Skycoin (SYC) This is one of at least 3 different "skycoin" that have been launched., Skynet-coin (SNC) This
was initially launched with the name "skycoin" (the third coin by that name), Slendercoin (SNC), Slothcoin (SLOTH),
Smartcoin (SMC), SnakeXcoin (SNCX), Snowcoin (SNC), Soapbar (SOAP), Sochicoin (SOCHI), Socialcoin (SOC), Solarcoin
(SLR), Solcoin (SOL), Spaincoin (SPA), Speedcoin (SPC), Spirecoin (), Spodermancoin (SDM), Spots (SPT), Sprout (?),
StabilityShares (XSI), Stablecoin (SBC), Stackedcoin (?), Stacycoin (?), Stalwartbucks (SBX), Starcoin (STR), Startcoin
(START), StarvingArtistcoin (?), STLcoin (STL), Stockcoin (STC), Stop (?) A fork of NXT, Storagecoin (?), Stories (STY),
Streamcoin (STRC), Summercoin (SUM), SummercoinV2 (SUM2), Suncoin (SUN), Supercalifragilisticexpialidociouscoin (?),
Supercoin (SUPER), Superherocoin (?), Surgecoin (SRG), Swagcoin (SWAG), Swisscoin (?), Switchcoin (SWITCH), Syncoin
(SYN), Sync (SYNC), Tacocoin (TCO), Tagcoin (TAG), Takcoin (TAK), Teacoin (TEA), Tekcoin (TEK), Tenebrix (?), TenFive
coin (10-5), Terracoin (TRC), Teslacoin (TES), Thaicoin (?), Thcoin (THC), Thebotcoin (TBN), Thecoin (?) Thecoin was
malware; the wallet contained a keyboard recorder,, TheSmurfscoin (TSC), Thorcoin (THOR), Thundercoin (?), Tickets
(TIX), Tigercoin (TGC), Timekoin (TK), Titanium (TTN), Tittiecoin (TTC), Tokecoin (?), Tomatocoin (?), TomScottcoin (?),
Topcoin (TOP), Torrentcoin (TC), Tracecoin (?), Tradercoin (TDC) Tradercoin was malware. It contained a
keylogger., Traincoin (XTN)0, Trollcoin (TRL), Troptions (?), Turbocoin (XTP), UFOcoin (UFO), Ultimatecoin (ULT),
Ultracoin (UTC), Unbreakablecoin (UNB), Unioncoin (UNC), Unitecoin (UNI), United Federation Credits (UFC),
Unitedscryptcoin (USC), Unitycoin (UNT), Universitycoin (UVC), Unobtanium (UNO), Urocoin (URO), USDe (USDE), Vadercoin
(VADR), Valuecoin (VLC), Vampirecoin (VMP), Vanillacoin (?), Vcoin (?), Vegascoin (VGC), Velocitycoin (VEL),
Vendettacoin (VAC), Vericoin (VRC), Verncoin (VRN), Verocoin (VRO) An IPO scam., Version (C), Version (V), Vertcoin
(VTC), Virtualminingcoin (VMC), Viruscoin (?), Visacoin (VISA) Another IPO scam. This one was also up for a
cease-and-desist order due to its name., Visncoin (VISN) Another IPO scam., Vodkacoin (?), Vootcoin (VOOT), Votecoin
(?), WeAreSatoshi (WAS), Webcoin (WEB), Wecoin (WEC), Whitecoin (WC), Wikicoin (WIKI), WildWestcoin (WEST), Wincoin
(WIN), Wolongcoin (WOL), Worldcoin (WDC), Wpcoin (WPC), Xcoin (XCO), XC (XC), Xedoscoin (XDC), Xencoin (XNC), Xivra
(XIV), XXLcoin (XXL), YACcoin (YACC), Yacoin (YAC), Yamashitacoin (YMC), Yangcoin (YANG), Ybcoin (YBC), Yellowcoin (YC),
Yincoin (YIN), YinYuancoin (YYC), Yuan Bao (YBC), Yuan Bao (YBC), Zccoin (ZCC), Zcoin (?), Zedcoin (ZED),
Zeitcoin (ZEIT), Zenithcoin (ZTC), Zetacoin (ZET), Zeuscoin (ZEU), Zimstake (ZS), Zodiaccoin (ZOD), Zombiecoin (ZMB),
Zurcoin (ZUR)