List of esolang file extensions

This is still a work in progress. It may be changed in the future.

This is a list of file extensions used by various esolangs, sorted alphabetically by extension.

Extension	Used by	Extension	Used by	Extension	Used by	Extension	Used by
.	Empty	..	Ellipsis	.!, .!l, .!c	!!!	.ඞ	JamogusLamogusAmogus
.中文	！真正可用的中文	.🧠+-	Stroke+-	.🟢️🔴	Semafor	.𐤁	Genesis
.1, .one	1	.100, .1bf, .1b, .hbf	100BF	.1234567890	1234567890	.2b	Generic 2D Befunge
.2kwl	2KWLang	.4	4	.5050	5050BrainF	.5d5dbfwmvttwmvtt	5D 5D Brainfuck With Multiverse Time Travel With Multiverse Time Travel
.5DD	5D Deadfish with Multiverse Time Travel	.5oh	Oh oh oh oh oh my f**king ass I shouldn't skate down the stairs before	.8ballbin	8BallScript	.abf	Advanced Brainfuck
.abin, .wsdt	Almost Binary	.abnj	AddByteNegJump	.abs	Abstract	.adcl	ACL
.af	ArrayFuck	.agg	AGG	.arnoldc	ArnoldC	.asdl	Zephyr ASDL
.ases	Ases	.asvi, .avmc	Asvi	.azhc	AzureHeartC	.b, .bf	brainfuck
.bfn	BrainFn	.b64	Base64 Text	.backtick	Backtick	.bb	Brainbits
.bc	braincrap	.be, .b93, .b98, .befunge	Befunge	.bfb	BFFB	.bfbf	Bfbf
.bfg	Befudge	.bh@	Bruh@	.bhv, .behaviour	Behaviour	.biiti	BIITI
.bin.lsg, .txt.lsg	Lasagna	.birb, .bird	Bird	.bitfuckery	Bitfuckery	.bld32	Blood32
.blf	Blockfunge	.blip	Blip	.brpy, .br, .bpy, .py.br	Brotlipython	.bs	\
.bsou	BrainSoup	.bt	Braintuck	.ca	CellArg	.cable	Cable
.caca	Caca	.calc	CALC	.cast	Cast	.ces	CES
.cfrs	CFRS	.chc	Chaincode	.ciwcotlmiararrarrwearmmc, .crazy	Crazy? I was crazy once. They locked me in a room. A rubber room. A rubber room with rats. And rats make me crazy. Here omitting thousands of characters. Plus, Mr.Mouldyair is too psychotic that there are no way we can stop him.	.cl, .clv, .clg	Charcoal
.clml	Clml	.clstns, .clstnsc	Classtennis	.cnpl	ChuckScript	.coballs	CBIASIPOSLESWRAOTTHNRTBTSS.SATLCD
.connery	Connery	.count	Countable	.cos, .cosh	COSOL	.coy	Conveyer
.cpl	C+	.cppc	..:	.cs	CreativeScript	.csl	CSL
.cttm	clickclang	.cube, .dewy	Cube	.cvsc, .nstrfwd	Nonstraightforward	.cyka	SCRUBS4U
.d, .dk	Deklare	.df	Drift	.dfi	Deadfish i	.dig, .dg	Dig
.dim	Dimensional	.divspl	DIVSPL	.dpsh	Dipsh!t	.dtp	Dot-Peachy
.dubdubm	DubDubMachine	.dumbascii	Dumbascii-2	.e, .ee	EE	.ef	Ef
.egah	Egaharjb	.esogd, .dat	Geometry Dash	.et	Entish, RarVM	.eus	EuskoPy
.fagi, .fg	FAGI	.far	Far	.fcm	Finite Countermodel Machine	.ffm/.ffb	FFM/FFB
.fh	Fuckhard	.fj	FlipJump	.fmn, .fbc	Formin	.fl	Brainflub
.fld	FallDown	.frg	I like frog	.fuss	FuSS	.fxyt	FXYT
.gab, .skibidi	Gen Alpha Brainrot	.gar	Gar	.gart, .yap	Gen Alpha	.gb	GreenBerry
.ghoti, .fish	Ghoti	.gisa	Gisa	.grim, .grimoire, .incant	Incant	.grn	GridRun
.grue	Grue	.hassl	Hassl	.hnb	Hanabi	.hpl, .hlb	H (Hammy)
.hq9+	HQ9+fuck	.hs	Haxell	.ia562-0401ms	I Ate 562 Metric Tons Of Air And Now I Am Floating Into The Atmosphere's Various Layers At Approximately 0.401 Meters Per Second. If I Had Not Ate That Much Air Then I Would Be Fine Right Now. Now I Have To Exhale All Of This Air. The Lesson Here Is To No	.ic	Compiled Iterate
.iex, .iexp	Iexp	.idk	IDK	.idt	Interdemento	.impr	Imperator
.indurate	Indurate	.ist	InfSt	.it	Iterate	.ipd	+/-
.irl	IRL	.islst	!/*	.ism	Isomorphism	.jcram	Jcram
.jottary	Jottary	.jq	Jq	.kawa	Kawa	.kc	KonamiCode
.keg, .ke	Kentarg	.krdz	Kardz	.kronk	KRONKSCRIPT	.larc	Linguarcana
.lf	Line Feed, LogicF---, LogFuck	.lgeso	LogicGate	.ll	ListLang	.lm	Logimat
.olympus	Olympus	.maj7	Eb-maj7	.mal, .mb	Malbolge	.masm, .mexe	Minimal assembly language
.mbf, .minimal, .minibf	Minimalbf	.mccmd	Minecraft	.melody, .mdy	Melody	.meml, .ml	MEMORYLEEK
.meow, .smeow	Meowlang	.mf(X)	Metafuck	.min	Minim	.mlp, .marb	Marble
.mos	Morse code	.moss	MØSS	.movl	MovLang	.mt	Morte
.mu	Malbolge Unshackled	.mul	Multiplicity	.myth	MythLang	.mvt	MindVomit
.mw	Microwave, Esolangs.org	.nand, .nor	Logique	.nc	[[NormalC
.nio	Nio	.nlrs	NLRNIS	.non	Eh, Non	.nut	Noisett
.nums, .nmod	Numbers	.nya	Nya~	.nyatc	Nya~*kwrgsfish+-HQ9`:'"rbtAzxdi8	.oak, .od	Oak
.ogc	O	.ojs	Objects	.olr	Oneliner	.oot	Object oriented Thue
.oop	Ogham++	.osm	OpenStreetCode	.owo	OwOlang	.pedo	Pedo
.phl	PHL 1.0	.pho	Photon (Quintopia)	.pigs4	Pigs	.plx	Polymorphix
.pnt	Point	.pp	PenisScript	.prg, preg, proreg	PREG	.prlx	Prolix
.pt	Paint	.pur	Purple	.pxe, .pxem	Pxem	.pyowo	PythOwO
.pyr, .pyra	Pyramid Scheme	.qualm	Qualm	.qwertyp	Qwerty	.ratt	Ratt
.rb13, .ehol	ROT13-Ruby	.red	Redcode	.redgreen	Super Yellow	.roll	Roulette
.rpg	Rpg	.rspr	RSRPL	.rui	RUI	.rule	RuleLoader
.sɾ, .sr	Un-Js	.sb3, .sb2, .sb, .sprite3	Scratch	.sah	SaHuTOrEPoL	.sarscov2	COVID-19
.sbj	Silberjoder	.sbr, .subreal	Subreal	.scm	Pico Scheme	.scrum	Scrum
.segfuck	Segfuck	.sheep	Sheep	.sigil	Sigil	.simple, .simplier	Simplier
.slet	SLet 4	.slot, .s	Slot	.sm	Sorry, Marvin!	.some	Something
.sos	SOS	.stdchess	Standard Chess	.syl	SyL	.sync	Synced
.swy	Stackowey	.sye, .syx	Symesol	.sz	Syzygy	.t2	Twoee
.tbf	Trigbf	.tgs	Targs	.tier	Tier	.tl, .tobi, .tlmake, .tobimake	TobiLang
.tmidl	TMIDL	.trainf	TrainFuck	.tramp	Trampolines	.trep	Trep
.txt	Text, Txet and many more	.ud	udymts	.udf	UndetailedFuck	.uf	Uf
.ufdn	Unfedern	.ul	Underload	.unn	Unnecessary	.unpl	Unpl
.vdf	Crab	.vpp	V++	.vroom	Vroom	.vt	Vitsy
.vw	Vowels (2017)	.wasd	WASD	.wise, .wis	Wise	.wlang	Wheel
.wsc	WYSIWISC	.wscript, .whoeverscripts	Whoeverscripts	.xd, .xdi8, .xdi8n	xdi8 aho f꜕刀 m∀	.xt	Xt
.xtw	XTW	.ydkqsxhwzssxpbymgcczq, .一丁丂七丄丅丆万丈三上下丌不与丏丐丑丒专且丕世丗丘丙业丛东丝丞丟丠両丢丣两严並丧丨丩个丫丬中丮丯丰丱串丳临丵丶丷丸丹为主丼丽举丿乀乁乂乃乄久乆乇么义乊之乌乍乎乏锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷小尐少尒尓尔尕尖尗尘尙尚尛尜尝尞尟尠尡尢尣尤尥尦尧尨尩尪尫尬尭尮尯尰就尲尳尴尵尶尷尸尹尺尻尼尽尾尿局屁层屃屄居屆屇屈屉届屋屌屍屎屏屐屑屒屓屔展屖屗屘屙屚屛屜屝属屟屠屡屢屣層履屦屧屨屩屪屫屬屭屮屯屰山屲屳屴屵屶屷屸屹屺屻屼屽屾屿岀岁岂岃岄岅岆岇岈岉岊岋岌岍岎岏岐岑岒岓岔岕岖岗岘岙岚岛岜岝岞岟岠岡岢岣岤岥岦岧岨岩岪岫岬岭岮岯岰岱岲岳岴岵岶岷岸岹岺岻岼岽岾岿峀峁峂峃峄峅峆峇峈峉峊峋峌峍峎峏峐峑峒峓峔峕峖峗峘峙峚峛峜峝峞峟峠峡峢峣峤峥峦峧峨峩峪峫峬峭峮峯峰峱峲峳峴峵島峷峸峹峺峻峼峽峾峿崀崁崂崃崄崅崆崇崈崉崊崋崌崍崎崏崐崑崒崓崔崕崖崗崘崙崚崛崜崝崞崟崠崡崢崣崤崥崦崧崨崩崪崫崬崭崮崯崰崱崲崳崴崵崶崷崸崹崺崻崼崽崾崿嵀嵁嵂嵃嵄嵅嵆嵇嵈嵉嵊嵋嵌嵍嵎嵏嵐嵑嵒嵓嵔嵕嵖嵗嵘嵙嵚嵛嵜嵝嵞嵟嵠嵡嵢嵣嵤嵥嵦嵧嵨嵩嵪嵫嵬嵭嵮嵯嵰嵱嵲嵳嵴嵵嵶嵷嵸嵹嵺嵻嵼嵽嵾嵿嶀嶁嶂嶃嶄嶅嶆嶇嶈嶉嶊嶋嶌嶍嶎嶏嶐嶑嶒嶓嶔嶕嶖嶗嶘嶙嶚嶛嶜嶝嶞嶟嶠嶡嶢嶣嶤嶥嶦嶧嶨嶩嶪嶫嶬嶭嶮嶯嶰嶱嶲嶳嶴嶵嶶嶷嶸嶹嶺嶻嶼嶽嶾嶿巀巁巂巃巄巅巆巇巈巉巊巋巌巍巎巏巐巑巒巓巔巕巖巗巘巙巚	一丁丂七丄丅丆万丈三上下丌不与丏丐丑丒专且丕世丗丘丙业丛东丝丞丟丠両丢丣两严並丧丨丩个丫丬中丮丯丰丱串丳临丵丶丷丸丹为主丼丽举丿乀乁乂乃乄久乆乇么义乊之乌乍乎乏锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷小尐少尒尓尔尕尖尗尘尙尚尛尜尝尞尟尠尡尢尣尤尥尦尧尨尩尪尫尬尭尮尯尰就尲尳尴尵尶尷尸尹尺尻尼尽尾尿局屁层屃屄居屆屇屈屉届屋屌屍屎屏屐屑屒屓屔展屖屗屘屙屚屛屜屝属屟屠屡屢屣層履屦屧屨屩屪屫屬屭屮屯屰山屲屳屴屵屶屷屸屹屺屻屼屽屾屿岀岁岂岃岄岅岆岇岈岉岊岋岌岍岎岏岐岑岒岓岔岕岖岗岘岙岚岛岜岝岞岟岠岡岢岣岤岥岦岧岨岩岪岫岬岭岮岯岰岱岲岳岴岵岶岷岸岹岺岻岼岽岾岿峀峁峂峃峄峅峆峇峈峉峊峋峌峍峎峏峐峑峒峓峔峕峖峗峘峙峚峛峜峝峞峟峠峡峢峣峤峥峦峧峨峩峪峫峬峭峮峯峰峱峲峳峴峵島峷峸峹峺峻峼峽峾峿崀崁崂崃崄崅崆崇崈崉崊崋崌崍崎崏崐崑崒崓崔崕崖崗崘崙崚崛崜崝崞崟崠崡崢崣崤崥崦崧崨崩崪崫崬崭崮崯崰崱崲崳崴崵崶崷崸崹崺崻崼崽崾崿嵀嵁嵂嵃嵄嵅嵆嵇嵈嵉嵊嵋嵌嵍嵎嵏嵐嵑嵒嵓嵔嵕嵖嵗嵘嵙嵚嵛嵜嵝嵞嵟嵠嵡嵢嵣嵤嵥嵦嵧嵨嵩嵪嵫嵬嵭嵮嵯嵰嵱嵲嵳嵴嵵嵶嵷嵸嵹嵺嵻嵼嵽嵾嵿嶀嶁嶂嶃嶄嶅嶆嶇嶈嶉嶊嶋嶌嶍嶎嶏嶐嶑嶒嶓嶔嶕嶖嶗嶘嶙嶚嶛嶜嶝嶞嶟嶠嶡嶢嶣嶤嶥嶦嶧嶨嶩嶪嶫嶬嶭嶮嶯嶰嶱嶲嶳嶴嶵嶶嶷嶸嶹嶺嶻嶼嶽嶾嶿巀巁巂巃巄巅巆巇巈巉巊巋巌巍巎巏巐巑巒巓巔巕巖巗巘巙巚	.ymc	Yael	.z8b	Z80golf
.zpp	Z++