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
.	Empty	..	Ellipsis
.!, .!l, .!c	!!!	.ඞ	JamogusLamogusAmogus
.2kwl	2KWLang	.5oh	Oh oh oh oh oh my f**king ass I shouldn't skate down the stairs before
.abf	Advanced Brainfuck	.abin, .wsdt	Almost Binary
.abnj	AddByteNegJump	.adcl	ACL
.arnoldc	ArnoldC	.asvi, .avmc	Asvi
.b, .bf	brainfuck	.b64	Base64 Text
.bc	braincrap	.be, .b93, .b98, .befunge	Befunge
.bfb	BFFB	.bfbf	Bfbf
.bin.lsg, .txt.lsg	Lasagna	.blip	Blip
.brpy, .br, .bpy, .py.br	Brotlipython	.bsou	BrainSoup
.bsymb	brainsymbol	.ces	CES
.chc	Chaincode	.clstns, .clstnsc	Classtennis
.cnpl	ChunkScript (dead)	.count	Countable
.cos, .cosh	COSOL	.cpl	C+
.cs	CreativeScript	.csl	CSL
.cttm	clickclang
.cube, .dewy	Cube	.cyka	SCRUBS4U
.dfi	Deadfish i	.divspl	DIVSPL
.dumbascii	Dumbascii-2	.ef	Ef
.egah	Egaharjb	.esogd	Geometry Dash
.fj	FlipJump	.fl	Brainflub
.fuss	FuSS	.gar	Gar
.gb	GreenBerry	.ghoti, .fish	Ghoti
.grim, .grimoire, .incant	Incant	.grn	GridRun
.hpl, .hlb	H (Hammy)	.hq9+	HQ9+fuck
.ic	Compiled Iterate	.idk	IDK
.idt	Interdemento	.impr	Imperator
.indurate	Indurate	.it	Iterate
.irl	IRL	.jcram	Jcram
.jq	Jq	.kawa	Kawa
.keg, .ke	Kentarg	.krdz	Kardz
.kronk	KRONKSCRIPT	.lf	Line Feed
.lgeso	LogicGate	.ll	ListLang
.masm, .mexe	Minimal assembly language	.melody, .mdy	Melody
.meml, .ml	MEMORYLEEK	.meow, .smeow	Meowlang
.mlp, .marb	Marble	.moss	MØSS
.movl	MovLang	.mt	Morte
.myth	MythLang	.mvt	MindVomit
.mw	Microwave, Esolangs.org	.nand, .nor	Logique
.non	Eh	.nut	Noisett
.nya	Nya~	.nyatc	Nya~*kwrgsfish+-HQ9`:'"rbtAzxdi8
.ojs	Objects	.oot	Object oriented Thue
.osm	OpenStreetCode	.pedo	Pedo
.pigs4	Pigs	.pp	PenisScript
.prg, preg, proreg	PREG	.qualm	Qualm
.ratt	Ratt	.rb13, .ehol	ROT13-Ruby
.rspr	RSRPL	.rui	RUI (dead)
.rule	RuleLoader	.sɾ, .sr	Un-Js
.sb3, .sb2, .sb, .sprite3	Scratch	.scrum	Scrum
.sigil	Sigil	.slot, .s	Slot
.swy	Stackowey	.t2	Twoee
.tl, .tobi, .tlmake, .tobimake	TobiLang	.tramp	Trampolines
.ud	udymts	.uf	Uf
.ufdn	Unfedern	.unn	Unnecessary
.vdf	Crab	.wasd	WASD
.wscript, .whoeverscripts	Whoeverscripts	.xd, .xdi8, .xdi8n	xdi8 aho f꜕刀 m∀
.xt	Xt	.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	.zpp	Z++