Y Combinator Startups

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

149 of 5,116 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

W19 · 149 sites · ← all sites

149 sites, including 21 parked or gone · show only live sites

#URLThis weekAvg rankTrancoRadarCrUXMajesticUmbrellaChecked

kalshi.com19,549 avg · W19▲ 5,25619,5498,797top 5ktop 50k15,79534,055Sep 14

Tranco 8,797Radar top 5kCrUX top 50kMajestic 15,795Umbrella 34,055checked Sep 14

buymeacoffee.com27,199 avg · W19▲ 31127,1994,084top 20ktop 50k1,16376,350Sep 14

Tranco 4,084Radar top 20kCrUX top 50kMajestic 1,163Umbrella 76,350checked Sep 14

wanderlog.com38,497 avg · W19▲ 1,38538,49721,069top 20ktop 100k11,18183,242Sep 14

Tranco 21,069Radar top 20kCrUX top 100kMajestic 11,181Umbrella 83,242checked Sep 14

dyneti.com40,138 avg · W19▲ 1,09540,13839,757top 50k——40,518Sep 14

Tranco 39,757Radar top 50kCrUX —Majestic —Umbrella 40,518checked Sep 14

ashbyhq.com56,892 avg · W19▲ 1,81156,89219,988top 20ktop 500k12,878137,810Sep 14

Tranco 19,988Radar top 20kCrUX top 500kMajestic 12,878Umbrella 137,810checked Sep 14

postscript.io66,394 avg · W19▼ 52366,39412,398top 10k—165,95320,832Sep 14

Tranco 12,398Radar top 10kCrUX —Majestic 165,953Umbrella 20,832checked Sep 14

termius.com67,631 avg · W19▼ 1,11067,63120,673top 10ktop 1M56,583125,637Sep 14

Tranco 20,673Radar top 10kCrUX top 1MMajestic 56,583Umbrella 125,637checked Sep 14

memfault.com78,867 avg · W19, acquired▼ 99978,86713,117top 5k—202,11021,375Sep 14

Tranco 13,117Radar top 5kCrUX —Majestic 202,110Umbrella 21,375checked Sep 14

deel.com109,072 avg · W19▲ 11,153109,07229,966top 100ktop 100k13,172284,078Sep 14

Tranco 29,966Radar top 100kCrUX top 100kMajestic 13,172Umbrella 284,078checked Sep 14

ourworldindata.org122,505 avg · W19▲ 2,561122,5053,786top 100ktop 100k958362,772Sep 14

Tranco 3,786Radar top 100kCrUX top 100kMajestic 958Umbrella 362,772checked Sep 14

sunsama.com129,616 avg · W19▲ 1,349129,616149,469top 200k—109,762—Sep 14

Tranco 149,469Radar top 200kCrUX —Majestic 109,762Umbrella —checked Sep 14

alpaca.markets154,263 avg · W19▲ 5,730154,26318,123top 10ktop 500k50,817393,850Sep 14

Tranco 18,123Radar top 10kCrUX top 500kMajestic 50,817Umbrella 393,850checked Sep 14

sapling.ai157,153 avg · W19▲ 4,964157,15380,895top 100ktop 500k52,067338,497Sep 14

Tranco 80,895Radar top 100kCrUX top 500kMajestic 52,067Umbrella 338,497checked Sep 14

zerodown.comredirected202,834 avg · W19, acquired▼ 2,061202,834298,506top 200k—107,161—Sep 14

Tranco 298,506Radar top 200kCrUX —Majestic 107,161Umbrella —checked Sep 14

this domain now redirects elsewhere; the rank measures whoever it points at — the homepage redirects to flyhomes.com, a different site

theforage.com209,579 avg · W19, acquired▲ 5,971209,57947,824top 500ktop 50k36,568544,344Sep 14

Tranco 47,824Radar top 500kCrUX top 50kMajestic 36,568Umbrella 544,344checked Sep 14

upsolve.org212,458 avg · W19▼ 947212,458292,890top 1M—132,025—Sep 14

Tranco 292,890Radar top 1MCrUX —Majestic 132,025Umbrella —checked Sep 14

mudrex.com220,384 avg · W19▼ 1,949220,384279,284top 500ktop 500k161,484—Sep 14

Tranco 279,284Radar top 500kCrUX top 500kMajestic 161,484Umbrella —checked Sep 14

coursedog.com222,798 avg · W19, acquired▲ 8,757222,798106,397top 200k—239,674322,322Sep 14

Tranco 106,397Radar top 200kCrUX —Majestic 239,674Umbrella 322,322checked Sep 14

dagger.io237,644 avg · W19▲ 5,549237,644278,559top 200k—196,728—Sep 14

Tranco 278,559Radar top 200kCrUX —Majestic 196,728Umbrella —checked Sep 14

keepertax.com241,844 avg · W19▲ 3,023241,844348,161top 1M—135,526—Sep 14

Tranco 348,161Radar top 1MCrUX —Majestic 135,526Umbrella —checked Sep 14

avo.app248,974 avg · W19▲ 16,613248,97434,335top 20k—680,01232,576Sep 14

Tranco 34,335Radar top 20kCrUX —Majestic 680,012Umbrella 32,576checked Sep 14

demodesk.com272,080 avg · W19▲ 9,096272,080284,726top 500ktop 1M259,434—Sep 14

Tranco 284,726Radar top 500kCrUX top 1MMajestic 259,434Umbrella —checked Sep 14

glideapps.com275,313 avg · W19▲ 26,337275,31398,708top 500ktop 500k34,343692,889Sep 14

Tranco 98,708Radar top 500kCrUX top 500kMajestic 34,343Umbrella 692,889checked Sep 14

doppler.com276,686 avg · W19▼ 44,039276,68620,374top 20k—52,113757,572Sep 14

Tranco 20,374Radar top 20kCrUX —Majestic 52,113Umbrella 757,572checked Sep 14

exlyapp.com288,595 avg · W19▼ 4,990288,595402,658top 1M—174,532—Sep 14

Tranco 402,658Radar top 1MCrUX —Majestic 174,532Umbrella —checked Sep 14

communityphone.org293,051 avg · W19▼ 3,437293,051336,435top 1Mtop 500k249,666—Sep 14

Tranco 336,435Radar top 1MCrUX top 500kMajestic 249,666Umbrella —checked Sep 14

supernova.io303,070 avg · W19▼ 281303,070389,417top 500k—216,722—Sep 14

Tranco 389,417Radar top 500kCrUX —Majestic 216,722Umbrella —checked Sep 14

cosmicjs.com312,793 avg · W19▲ 14,401312,793171,879top 200k—154,948611,551Sep 14

Tranco 171,879Radar top 200kCrUX —Majestic 154,948Umbrella 611,551checked Sep 14

thejuggernaut.com369,118 avg · W19▲ 9,834369,118———369,118—Sep 14

Tranco —Radar —CrUX —Majestic 369,118Umbrella —checked Sep 14

heartaerospace.com371,706 avg · W19▲ 46,160371,706602,720——140,691—Sep 14

Tranco 602,720Radar —CrUX —Majestic 140,691Umbrella —checked Sep 14

inito.com383,188 avg · W19▲ 17,506383,188188,504top 500k—286,819674,240Sep 14

Tranco 188,504Radar top 500kCrUX —Majestic 286,819Umbrella 674,240checked Sep 14

truora.com400,877 avg · W19▲ 10,540400,877373,485top 500k—428,269—Sep 14

Tranco 373,485Radar top 500kCrUX —Majestic 428,269Umbrella —checked Sep 14

handle.com404,206 avg · W19▲ 565404,206449,375top 1M—359,037—Sep 14

Tranco 449,375Radar top 1MCrUX —Majestic 359,037Umbrella —checked Sep 14

skill-lync.com409,748 avg · W19▼ 11,924409,748540,889top 1M—278,607—Sep 14

Tranco 540,889Radar top 1MCrUX —Majestic 278,607Umbrella —checked Sep 14

kovi.com.br417,637 avg · W19, acquired▲ 54,048417,637357,064top 1Mtop 100k478,210—Sep 14

Tranco 357,064Radar top 1MCrUX top 100kMajestic 478,210Umbrella —checked Sep 14

okteto.com418,830 avg · W19▼ 4,110418,830———418,830—Sep 14

Tranco —Radar —CrUX —Majestic 418,830Umbrella —checked Sep 14

shiokmeats.com420,120 avg · W19, acquired▼ 15,283420,120———420,120—Sep 14

Tranco —Radar —CrUX —Majestic 420,120Umbrella —checked Sep 14

jetpackaviation.com437,532 avg · W19▼ 12,364437,532———437,532—Sep 14

Tranco —Radar —CrUX —Majestic 437,532Umbrella —checked Sep 14

superb-ai.com468,366 avg · W19▼ 15,477468,366———468,366—Sep 14

Tranco —Radar —CrUX —Majestic 468,366Umbrella —checked Sep 14

middesk.com472,046 avg · W19▼ 13,326472,046492,657top 1M—451,434—Sep 14

Tranco 492,657Radar top 1MCrUX —Majestic 451,434Umbrella —checked Sep 14

pachama.comredirected503,890 avg · W19, acquired▼ 6,671503,890722,744——285,035—Sep 14

Tranco 722,744Radar —CrUX —Majestic 285,035Umbrella —checked Sep 14

this domain now redirects elsewhere; the rank measures whoever it points at — the homepage redirects to carbon-direct.com, a different site

cityfurnish.com504,325 avg · W19▲ 5,203504,325532,249—top 500k476,400—Sep 14

Tranco 532,249Radar —CrUX top 500kMajestic 476,400Umbrella —checked Sep 14

overview.ai532,807 avg · W19▲ 77,626532,807—top 1M—532,807—Sep 14

Tranco —Radar top 1MCrUX —Majestic 532,807Umbrella —checked Sep 14

nabis.com551,123 avg · W19▲ 37,188551,123439,770top 1M—662,475—Sep 14

Tranco 439,770Radar top 1MCrUX —Majestic 662,475Umbrella —checked Sep 14

nala.com562,639 avg · W19▲ 89,590562,639———562,639—Sep 14

Tranco —Radar —CrUX —Majestic 562,639Umbrella —checked Sep 14

numero.ai562,724 avg · W19▲ 24,970562,724382,667top 1M—742,781—Sep 14

Tranco 382,667Radar top 1MCrUX —Majestic 742,781Umbrella —checked Sep 14

ultralig.ht565,512 avg · W19▲ 16,791565,512———565,512—Sep 14

Tranco —Radar —CrUX —Majestic 565,512Umbrella —checked Sep 14

golinks.io566,742 avg · W19▼ 12,998566,742318,701top 500k—405,407976,117Sep 14

Tranco 318,701Radar top 500kCrUX —Majestic 405,407Umbrella 976,117checked Sep 14

shef.com594,419 avg · W19▲ 6,619594,419423,090top 500ktop 1M536,074824,094Sep 14

Tranco 423,090Radar top 500kCrUX top 1MMajestic 536,074Umbrella 824,094checked Sep 14

nowports.com595,499 avg · W19▲ 69,642595,499———595,499—Sep 14

Tranco —Radar —CrUX —Majestic 595,499Umbrella —checked Sep 14

keynua.com597,350 avg · W19▼ 4,163597,350597,350————Sep 14

Tranco 597,350Radar —CrUX —Majestic —Umbrella —checked Sep 14

cuanto.app614,068 avg · W19▼ 1,933614,068——top 1M614,068—Sep 14

Tranco —Radar —CrUX top 1MMajestic 614,068Umbrella —checked Sep 14

rune.ai615,294 avg · W19▼ 9,389615,294615,294top 500k———Sep 14

Tranco 615,294Radar top 500kCrUX —Majestic —Umbrella —checked Sep 14

vertofx.comredirected644,135 avg · W19▲ 6,395644,135729,015top 500k—559,255—Sep 14

Tranco 729,015Radar top 500kCrUX —Majestic 559,255Umbrella —checked Sep 14

this domain now redirects elsewhere; the rank measures whoever it points at — the homepage redirects to verto.co, a different site

acciojob.com652,696 avg · W19▲ 128,747652,696440,453top 1Mtop 500k864,939—Sep 14

Tranco 440,453Radar top 1MCrUX top 500kMajestic 864,939Umbrella —checked Sep 14

naturallclub.com669,933 avg · W19▼ 13,610669,933———669,933—Sep 14

Tranco —Radar —CrUX —Majestic 669,933Umbrella —checked Sep 14

shipper.id673,930 avg · W19▲ 308673,930724,353top 1Mtop 1M623,507—Sep 14

Tranco 724,353Radar top 1MCrUX top 1MMajestic 623,507Umbrella —checked Sep 14

lezzoo.com692,842 avg · W19▼ 40,582692,842692,842top 500ktop 1M——Sep 14

Tranco 692,842Radar top 500kCrUX top 1MMajestic —Umbrella —checked Sep 14

atlascard.com698,466 avg · W19▲ 11,793698,466———698,466—Sep 14

Tranco —Radar —CrUX —Majestic 698,466Umbrella —checked Sep 14

windsor.io718,189 avg · W19, acquired▼ 44,697718,189———718,189—Sep 14

Tranco —Radar —CrUX —Majestic 718,189Umbrella —checked Sep 14

ampup.io727,139 avg · W19▲ 29,522727,139627,037top 1M—827,241—Sep 14

Tranco 627,037Radar top 1MCrUX —Majestic 827,241Umbrella —checked Sep 14

prometheusfuels.comredirected735,181 avg · W19▲ 46,718735,181———735,181—Sep 14

Tranco —Radar —CrUX —Majestic 735,181Umbrella —checked Sep 14

this domain now redirects elsewhere; the rank measures whoever it points at — the homepage redirects to prometheusfuels.ai, a different site

convex.com793,121 avg · W19, acquired▼ 10,625793,121———793,121—Sep 14

Tranco —Radar —CrUX —Majestic 793,121Umbrella —checked Sep 14

rct.ai816,137 avg · W19▲ 100,244816,137———816,137—Sep 14

Tranco —Radar —CrUX —Majestic 816,137Umbrella —checked Sep 14

cocoon.com821,644 avg · W19, acquired▼ 12,916821,644———821,644—Sep 14

Tranco —Radar —CrUX —Majestic 821,644Umbrella —checked Sep 14

catch.co837,860 avg · W19, acquired▼ 74,328837,860———837,860—Sep 14

Tranco —Radar —CrUX —Majestic 837,860Umbrella —checked Sep 14

latchel.com853,781 avg · W19▲ 56,347853,781———853,781—Sep 14

Tranco —Radar —CrUX —Majestic 853,781Umbrella —checked Sep 14

flockjay.com869,933 avg · W19▲ 2,717869,933938,849——801,017—Sep 14

Tranco 938,849Radar —CrUX —Majestic 801,017Umbrella —checked Sep 14

centaur.ai967,955 avg · W19▼ 22,727967,955———967,955—Sep 14

Tranco —Radar —CrUX —Majestic 967,955Umbrella —checked Sep 14

emilabs.ai995,584 avg · W19995,584———995,584—Sep 7

Tranco —Radar —CrUX —Majestic 995,584Umbrella —checked Sep 7

axdraft.comgone996,817 avg · W19, acquired996,817———996,817—Aug 22

Tranco —Radar —CrUX —Majestic 996,817Umbrella —checked Aug 22

this domain is gone; the rank is what it left behind — no A or AAAA record

voting.works997,465 avg · W19▼ 44,987997,465———997,465—Sep 13

Tranco —Radar —CrUX —Majestic 997,465Umbrella —checked Sep 13