Y Combinator Startups

Startups funded by Y Combinator that have been publicly announced and still have functional websites.

211 of 4,520 sites · synced from the official YC API · rank is the average of Tranco, Majestic and Umbrella; Radar and CrUX shown for context · all 5 are flawed, that's the point. · tap a row for the breakdown

Notes:all

’05–’09S05 · W06 · S06 · W07 · S07 · W08 · S08 · W09 · S09

’10–’14W10 · S10 · W11 · S11 · W12 · S12 · W13 · S13 · W14 · S14

’15–’19W15 · S15 · W16 · S16 · W17 · S17 · W18 · S18 · W19 · S19

’20–’24W20 · S20 · W21 · S21 · W22 · S22 · W23 · S23 · W24 · S24 · F24

’25–’27W25 · S25 · F25 · W26 · S26 · F26 · W27

P25 · P26

W23 · 211 sites · ← all sites

211 live · 27 parked or gone — show all

#URLThis weekAvg rankTrancoRadarCrUXMajesticUmbrellaChecked

vector.co35,069 avg · W23▲ 35335,06933,256top 20k——36,881Jul 30

Tranco 33,256Radar top 20kCrUX —Majestic —Umbrella 36,881checked Jul 30

resend.com52,003 avg · W23▼ 83552,00319,569top 20ktop 50k12,138124,301Jul 30

Tranco 19,569Radar top 20kCrUX top 50kMajestic 12,138Umbrella 124,301checked Jul 30

usepylon.com88,679 avg · W23▼ 1,11288,67911,606top 5ktop 1M209,27845,153Jul 30

Tranco 11,606Radar top 5kCrUX top 1MMajestic 209,278Umbrella 45,153checked Jul 30

onetext.com91,507 avg · W23▼ 1,71391,50774,018top 100k——108,996Jul 30

Tranco 74,018Radar top 100kCrUX —Majestic —Umbrella 108,996checked Jul 30

vellum.ai134,900 avg · W23▲ 1,144134,900198,952top 500ktop 1M70,848—Jul 30

Tranco 198,952Radar top 500kCrUX top 1MMajestic 70,848Umbrella —checked Jul 30

langfuse.com141,786 avg · W23, acquired▲ 343141,78653,773top 50ktop 500k52,210319,376Jul 30

Tranco 53,773Radar top 50kCrUX top 500kMajestic 52,210Umbrella 319,376checked Jul 30

superkalam.com153,356 avg · W23▼ 36,507153,356153,356top 1Mtop 500k——Jul 30

Tranco 153,356Radar top 1MCrUX top 500kMajestic —Umbrella —checked Jul 30

litellm.ai203,486 avg · W23▲ 11,151203,486111,975top 500ktop 1M39,181459,303Jul 30

Tranco 111,975Radar top 500kCrUX top 1MMajestic 39,181Umbrella 459,303checked Jul 30

middleware.io207,815 avg · W23▼ 762207,815172,849top 200k—130,558320,037Jul 30

Tranco 172,849Radar top 200kCrUX —Majestic 130,558Umbrella 320,037checked Jul 30

type.ai208,685 avg · W23▼ 159208,685236,441top 1Mtop 500k180,929—Jul 30

Tranco 236,441Radar top 1MCrUX top 500kMajestic 180,929Umbrella —checked Jul 30

helicone.ai224,047 avg · W23, acquired▲ 8,091224,047330,465top 500k—117,628—Jul 30

Tranco 330,465Radar top 500kCrUX —Majestic 117,628Umbrella —checked Jul 30

yuma.ai227,733 avg · W23▲ 7,121227,73379,165top 50k—393,543210,490Jul 30

Tranco 79,165Radar top 50kCrUX —Majestic 393,543Umbrella 210,490checked Jul 30

frigade.com239,692 avg · W23▼ 6,965239,692236,051top 200k——243,333Jul 30

Tranco 236,051Radar top 200kCrUX —Majestic —Umbrella 243,333checked Jul 30

buildwithfern.com243,470 avg · W23, acquired▼ 11,587243,470157,466top 100k—337,196235,748Jul 30

Tranco 157,466Radar top 100kCrUX —Majestic 337,196Umbrella 235,748checked Jul 30

stackai.com258,549 avg · W23, acquired▲ 13,204258,549345,523top 500ktop 1M171,575—Jul 30

Tranco 345,523Radar top 500kCrUX top 1MMajestic 171,575Umbrella —checked Jul 30

inkeep.com292,652 avg · W23▼ 6,912292,652156,824top 100k—601,355119,776Jul 30

Tranco 156,824Radar top 100kCrUX —Majestic 601,355Umbrella 119,776checked Jul 30

reflex.dev293,095 avg · W23▲ 4,855293,095423,789top 500k—162,401—Jul 30

Tranco 423,789Radar top 500kCrUX —Majestic 162,401Umbrella —checked Jul 30

magicpatterns.com310,105 avg · W23▲ 12,940310,105363,726top 500ktop 1M256,484—Jul 30

Tranco 363,726Radar top 500kCrUX top 1MMajestic 256,484Umbrella —checked Jul 30

glass.health316,786 avg · W23▲ 22,419316,786———316,786—Jul 30

Tranco —Radar —CrUX —Majestic 316,786Umbrella —checked Jul 30

hona.com319,685 avg · W23▲ 18,888319,685319,685top 200k———Jul 30

Tranco 319,685Radar top 200kCrUX —Majestic —Umbrella —checked Jul 30

persana.ai373,834 avg · W23▲ 3,900373,834———373,834—Jul 30

Tranco —Radar —CrUX —Majestic 373,834Umbrella —checked Jul 30

depot.dev386,659 avg · W23▲ 7,142386,659467,767top 500k—305,551—Jul 30

Tranco 467,767Radar top 500kCrUX —Majestic 305,551Umbrella —checked Jul 30

highlight.io387,269 avg · W23, acquired▲ 16,487387,269203,290top 100k—493,421465,096Jul 30

Tranco 203,290Radar top 100kCrUX —Majestic 493,421Umbrella 465,096checked Jul 30

numeral.com395,035 avg · W23▲ 7,034395,035529,388top 1M—260,681—Jul 30

Tranco 529,388Radar top 1MCrUX —Majestic 260,681Umbrella —checked Jul 30

infisical.com397,168 avg · W23▼ 24,137397,168103,048top 50k—126,282962,175Jul 30

Tranco 103,048Radar top 50kCrUX —Majestic 126,282Umbrella 962,175checked Jul 30

cloudchipr.com401,468 avg · W23▼ 6,928401,468———401,468—Jul 30

Tranco —Radar —CrUX —Majestic 401,468Umbrella —checked Jul 30

trigger.dev407,424 avg · W23▼ 8,593407,424132,865top 100k—178,120911,287Jul 30

Tranco 132,865Radar top 100kCrUX —Majestic 178,120Umbrella 911,287checked Jul 30

warp.co431,120 avg · W23▼ 8,428431,120———431,120—Jul 30

Tranco —Radar —CrUX —Majestic 431,120Umbrella —checked Jul 30

clueso.io432,091 avg · W23▲ 6,805432,091299,278top 200k—564,904—Jul 30

Tranco 299,278Radar top 200kCrUX —Majestic 564,904Umbrella —checked Jul 30

nango.dev432,347 avg · W23▲ 7,116432,347574,665top 500k—290,028—Jul 30

Tranco 574,665Radar top 500kCrUX —Majestic 290,028Umbrella —checked Jul 30

cosine.sh439,397 avg · W23▲ 18,232439,397652,114——226,680—Jul 30

Tranco 652,114Radar —CrUX —Majestic 226,680Umbrella —checked Jul 30

escape.tech444,342 avg · W23▲ 16,452444,342660,769top 1M—227,915—Jul 30

Tranco 660,769Radar top 1MCrUX —Majestic 227,915Umbrella —checked Jul 30

flower.ai478,240 avg · W23▼ 18,101478,240652,994top 1M—303,486—Jul 30

Tranco 652,994Radar top 1MCrUX —Majestic 303,486Umbrella —checked Jul 30

icepanel.io494,538 avg · W23▼ 9,650494,538347,241top 200k——641,835Jul 30

Tranco 347,241Radar top 200kCrUX —Majestic —Umbrella 641,835checked Jul 30

alaan.com517,537 avg · W23▲ 18,283517,537505,683top 500ktop 1M529,390—Jul 30

Tranco 505,683Radar top 500kCrUX top 1MMajestic 529,390Umbrella —checked Jul 30

truewind.ai518,663 avg · W23▲ 25,121518,663———518,663—Jul 30

Tranco —Radar —CrUX —Majestic 518,663Umbrella —checked Jul 30

vitalize.care553,803 avg · W23▲ 13,280553,803553,803top 1M———Jul 30

Tranco 553,803Radar top 1MCrUX —Majestic —Umbrella —checked Jul 30

outerbase.com608,079 avg · W23, acquired▲ 991608,079———608,079—Jul 30

Tranco —Radar —CrUX —Majestic 608,079Umbrella —checked Jul 30

onshore.com615,417 avg · W23▲ 22,019615,417548,998——681,835—Jul 30

Tranco 548,998Radar —CrUX —Majestic 681,835Umbrella —checked Jul 30

tennr.com617,877 avg · W23▼ 1,549617,877362,573top 500k—879,699611,360Jul 30

Tranco 362,573Radar top 500kCrUX —Majestic 879,699Umbrella 611,360checked Jul 30

pirros.com618,285 avg · W23▲ 1,042618,285486,161top 500k——750,409Jul 30

Tranco 486,161Radar top 500kCrUX —Majestic —Umbrella 750,409checked Jul 30

traceloop.com629,194 avg · W23, acquired▲ 24,331629,194—top 1M—629,194—Jul 30

Tranco —Radar top 1MCrUX —Majestic 629,194Umbrella —checked Jul 30

extend.ai641,724 avg · W23▼ 1,046641,724944,108top 1M—339,340—Jul 30

Tranco 944,108Radar top 1MCrUX —Majestic 339,340Umbrella —checked Jul 30

boundaryml.com648,019 avg · W23▲ 22,258648,019———648,019—Jul 30

Tranco —Radar —CrUX —Majestic 648,019Umbrella —checked Jul 30

coldreach.ai707,702 avg · W23▲ 10,442707,702———707,702—Jul 30

Tranco —Radar —CrUX —Majestic 707,702Umbrella —checked Jul 30

avoca.ai709,752 avg · W23▲ 72,544709,752492,371top 500k—817,590819,296Jul 30

Tranco 492,371Radar top 500kCrUX —Majestic 817,590Umbrella 819,296checked Jul 30

drdroid.io711,285 avg · W23▲ 42,885711,285———711,285—Jul 30

Tranco —Radar —CrUX —Majestic 711,285Umbrella —checked Jul 30

metal.so719,258 avg · W23▲ 14,514719,258719,258top 500k———Jul 30

Tranco 719,258Radar top 500kCrUX —Majestic —Umbrella —checked Jul 30

rivet.dev720,283 avg · W23▲ 57,504720,283911,066top 500k—529,500—Jul 30

Tranco 911,066Radar top 500kCrUX —Majestic 529,500Umbrella —checked Jul 30

unify.ai750,301 avg · W23▲ 39,994750,301977,536——523,066—Jul 30

Tranco 977,536Radar —CrUX —Majestic 523,066Umbrella —checked Jul 30

univerbal.app774,602 avg · W23▼ 9,960774,602———774,602—Jul 30

Tranco —Radar —CrUX —Majestic 774,602Umbrella —checked Jul 30

commonpaper.com789,570 avg · W23▲ 38,119789,570———789,570—Jul 30

Tranco —Radar —CrUX —Majestic 789,570Umbrella —checked Jul 30

palomma.com811,137 avg · W23▲ 631811,137811,137————Jul 30

Tranco 811,137Radar —CrUX —Majestic —Umbrella —checked Jul 30

credal.ai884,852 avg · W23▲ 26,783884,852———884,852—Jul 30

Tranco —Radar —CrUX —Majestic 884,852Umbrella —checked Jul 30

syncly.app906,996 avg · W23▼ 21,595906,996———906,996—Jul 30

Tranco —Radar —CrUX —Majestic 906,996Umbrella —checked Jul 30

co.dev923,378 avg · W23▼ 83,442923,378———923,378—Jul 30

Tranco —Radar —CrUX —Majestic 923,378Umbrella —checked Jul 30

metal.ai946,437 avg · W23▲ 38,677946,437———946,437—Jul 30

Tranco —Radar —CrUX —Majestic 946,437Umbrella —checked Jul 30

keephq.dev952,593 avg · W23, acquired▲ 24,730952,593———952,593—Jul 30

Tranco —Radar —CrUX —Majestic 952,593Umbrella —checked Jul 30

trysalient.com977,562 avg · W23▲ 20,090977,562—top 1M—977,562—Jul 30

Tranco —Radar top 1MCrUX —Majestic 977,562Umbrella —checked Jul 30

speccheckrx.com997,572 avg · W23997,572—top 1M——997,572Jul 30

Tranco —Radar top 1MCrUX —Majestic —Umbrella 997,572checked Jul 30

1stcollab.com— avg · W23———————

Tranco —Radar —CrUX —Majestic —Umbrella —checked never

222.place— avg · W23———————

Tranco —Radar —CrUX —Majestic —Umbrella —checked never

adventris.com— avg · W23———————

Tranco —Radar —CrUX —Majestic —Umbrella —checked never

alloy.app— avg · W23——top 1M———Jul 26

Tranco —Radar top 1MCrUX —Majestic —Umbrella —checked Jul 26

alphawatch.ai— avg · W23———————

Tranco —Radar —CrUX —Majestic —Umbrella —checked never

ariglad.com— avg · W23———————

Tranco —Radar —CrUX —Majestic —Umbrella —checked never

arroyo.dev— avg · W23, acquired———————

Tranco —Radar —CrUX —Majestic —Umbrella —checked never

askkyber.com— avg · W23———————

Tranco —Radar —CrUX —Majestic —Umbrella —checked never

atmeto.com— avg · W23———————

Tranco —Radar —CrUX —Majestic —Umbrella —checked never

backdropagent.com— avg · W23———————

Tranco —Radar —CrUX —Majestic —Umbrella —checked never

bluebirds.ai— avg · W23, acquired———————

Tranco —Radar —CrUX —Majestic —Umbrella —checked never

brewit.ai— avg · W23, acquired———————

Tranco —Radar —CrUX —Majestic —Umbrella —checked never

buildjet.com— avg · W23——top 1M———Jul 30

Tranco —Radar top 1MCrUX —Majestic —Umbrella —checked Jul 30

bujeti.com— avg · W23———————

Tranco —Radar —CrUX —Majestic —Umbrella —checked never

clearspace.org— avg · W23———————

Tranco —Radar —CrUX —Majestic —Umbrella —checked never

clickpe.ai— avg · W23———————

Tranco —Radar —CrUX —Majestic —Umbrella —checked never

combinehealth.ai— avg · W23———————

Tranco —Radar —CrUX —Majestic —Umbrella —checked never

compliantllm.com— avg · W23———————

Tranco —Radar —CrUX —Majestic —Umbrella —checked never

concourse.co— avg · W23———————

Tranco —Radar —CrUX —Majestic —Umbrella —checked never

coperniq.io— avg · W23———————

Tranco —Radar —CrUX —Majestic —Umbrella —checked never

corgilabs.ai— avg · W23———————

Tranco —Radar —CrUX —Majestic —Umbrella —checked never

dagworks.io— avg · W23, acquired———————

Tranco —Radar —CrUX —Majestic —Umbrella —checked never

dataglade.com— avg · W23———————

Tranco —Radar —CrUX —Majestic —Umbrella —checked never

designbase.com— avg · W23———————

Tranco —Radar —CrUX —Majestic —Umbrella —checked never

diffuse.bio— avg · W23———————

Tranco —Radar —CrUX —Majestic —Umbrella —checked never

double.bot— avg · W23———————

Tranco —Radar —CrUX —Majestic —Umbrella —checked never

edgebit.io— avg · W23, acquired———————

Tranco —Radar —CrUX —Majestic —Umbrella —checked never

epsilon-ai.com— avg · W23———————

Tranco —Radar —CrUX —Majestic —Umbrella —checked never

factiq.com— avg · W23———————

Tranco —Radar —CrUX —Majestic —Umbrella —checked never

fairwayhealth.co— avg · W23, acquired———————

Tranco —Radar —CrUX —Majestic —Umbrella —checked never

fastgen.com— avg · W23———————

Tranco —Radar —CrUX —Majestic —Umbrella —checked never

finic.ai— avg · W23———————

Tranco —Radar —CrUX —Majestic —Umbrella —checked never

finnihealth.com— avg · W23———————

Tranco —Radar —CrUX —Majestic —Umbrella —checked never

finta.com— avg · W23———————

Tranco —Radar —CrUX —Majestic —Umbrella —checked never

flexdesk.com— avg · W23———————

Tranco —Radar —CrUX —Majestic —Umbrella —checked never

floworks.ai— avg · W23———————

Tranco —Radar —CrUX —Majestic —Umbrella —checked never

fluidinvesting.com— avg · W23———————

Tranco —Radar —CrUX —Majestic —Umbrella —checked never

getadri.ai— avg · W23———————

Tranco —Radar —CrUX —Majestic —Umbrella —checked never

getcobblestone.com— avg · W23, acquired———————

Tranco —Radar —CrUX —Majestic —Umbrella —checked never

100

getfinvest.com— avg · W23———————

Tranco —Radar —CrUX —Majestic —Umbrella —checked never

101

gethipposcribe.com— avg · W23———————

Tranco —Radar —CrUX —Majestic —Umbrella —checked never

102

getversive.com— avg · W23———————

Tranco —Radar —CrUX —Majestic —Umbrella —checked never

103

gluetrail.com— avg · W23———————

Tranco —Radar —CrUX —Majestic —Umbrella —checked never

104

gooseworks.ai— avg · W23——top 1M———Jul 30

Tranco —Radar top 1MCrUX —Majestic —Umbrella —checked Jul 30

105

gosameday.com— avg · W23———————

Tranco —Radar —CrUX —Majestic —Umbrella —checked never

106

goveagle.com— avg · W23——top 1M———Jul 26

Tranco —Radar top 1MCrUX —Majestic —Umbrella —checked Jul 26

107

hadrius.com— avg · W23———————

Tranco —Radar —CrUX —Majestic —Umbrella —checked never

108

hammr.com— avg · W23———————

Tranco —Radar —CrUX —Majestic —Umbrella —checked never

109

helloconduit.com— avg · W23———————

Tranco —Radar —CrUX —Majestic —Umbrella —checked never

110

honeydew.ai— avg · W23———————

Tranco —Radar —CrUX —Majestic —Umbrella —checked never

111

iliad.ai— avg · W23———————

Tranco —Radar —CrUX —Majestic —Umbrella —checked never

112

inbuild.ai— avg · W23———————

Tranco —Radar —CrUX —Majestic —Umbrella —checked never

113

invitris.com— avg · W23———————

Tranco —Radar —CrUX —Majestic —Umbrella —checked never

114

invopop.com— avg · W23——top 1M———Jul 30

Tranco —Radar top 1MCrUX —Majestic —Umbrella —checked Jul 30

115

joinloula.com— avg · W23———————

Tranco —Radar —CrUX —Majestic —Umbrella —checked never

116

kivohealth.com— avg · W23———————

Tranco —Radar —CrUX —Majestic —Umbrella —checked never

117

koywe.com— avg · W23———————

Tranco —Radar —CrUX —Majestic —Umbrella —checked never

118

kv.cash— avg · W23———————

Tranco —Radar —CrUX —Majestic —Umbrella —checked never

119

latenthealth.com— avg · W23——top 1M———Jul 30

Tranco —Radar top 1MCrUX —Majestic —Umbrella —checked Jul 30

120

lightski.com— avg · W23———————

Tranco —Radar —CrUX —Majestic —Umbrella —checked never

show 20 more

a — means that source hasn't ranked the site; the average uses whichever exact ranks exist

History · every change, public

Jul 30 06:02sync with the YC sync, 15 sites changed

Jul 29 06:03sync with the YC sync, 23 sites changed

Jul 28 06:03sync with the YC sync, 9 sites changed

Jul 27 06:02sync with the YC sync, 7 sites changed

Jul 26 06:03sync with the YC sync, 4 sites changed

Jul 25 06:03sync with the YC sync, 2 sites shown

This list is kept in step with the official YC API, so it isn't editable here. This is just for fun.