Y Combinator Startups

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

136 of 4,698 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 · S27

P25 · P26

P25 · 136 sites · ← all sites

136 live · 5 parked or gone — show all

#URLThis weekAvg rankTrancoRadarCrUXMajesticUmbrellaChecked

1

better-auth.com232,189 avg · P25▲ 20,355232,189162,006top 200ktop 1M103,366431,194Oct 29

Tranco 162,006Radar top 200kCrUX top 1MMajestic 103,366Umbrella 431,194checked Oct 29

2

voiceos.com281,959 avg · P25▲ 82,291281,959281,959top 200k———Oct 29

Tranco 281,959Radar top 200kCrUX —Majestic —Umbrella —checked Oct 29

3

cua.ai310,178 avg · P25▲ 44,606310,178324,966top 200k—295,390—Oct 29

Tranco 324,966Radar top 200kCrUX —Majestic 295,390Umbrella —checked Oct 29

4

humanbehavior.co310,437 avg · P25▼ 41,572310,437310,437top 500k———Oct 29

Tranco 310,437Radar top 500kCrUX —Majestic —Umbrella —checked Oct 29

5

willowvoice.com313,543 avg · P25▲ 26,654313,54375,593top 50k—284,483580,554Oct 29

Tranco 75,593Radar top 50kCrUX —Majestic 284,483Umbrella 580,554checked Oct 29

6

tinfoil.sh315,197 avg · P25▲ 54,050315,197190,672top 100k—439,722—Oct 29

Tranco 190,672Radar top 100kCrUX —Majestic 439,722Umbrella —checked Oct 29

7

pgdog.dev336,625 avg · P25▼ 39,038336,625———336,625—Oct 29

Tranco —Radar —CrUX —Majestic 336,625Umbrella —checked Oct 29

8

usefeyn.com360,134 avg · P25▼ 20,800360,134———360,134—Oct 29

Tranco —Radar —CrUX —Majestic 360,134Umbrella —checked Oct 29

9

youlearn.ai413,637 avg · P25▲ 24,113413,637415,865top 1Mtop 1M411,408—Oct 29

Tranco 415,865Radar top 1MCrUX top 1MMajestic 411,408Umbrella —checked Oct 29

10

qfex.com415,956 avg · P25▲ 40,871415,956415,956top 200k———Oct 29

Tranco 415,956Radar top 200kCrUX —Majestic —Umbrella —checked Oct 29

11

blaxel.ai425,680 avg · P25, acquired▼ 35,655425,680—top 1M—425,680—Oct 29

Tranco —Radar top 1MCrUX —Majestic 425,680Umbrella —checked Oct 29

12

klavis.ai425,788 avg · P25▼ 43,641425,788—top 1M—425,788—Oct 29

Tranco —Radar top 1MCrUX —Majestic 425,788Umbrella —checked Oct 29

13

sim.ai486,865 avg · P25▲ 115,248486,865674,434top 500k—299,295—Oct 29

Tranco 674,434Radar top 500kCrUX —Majestic 299,295Umbrella —checked Oct 29

14

cubic.dev503,001 avg · P25▲ 30,227503,001615,814top 1M—390,188—Oct 29

Tranco 615,814Radar top 1MCrUX —Majestic 390,188Umbrella —checked Oct 29

15

probo.com509,547 avg · P25▲ 33,578509,547—top 1M—509,547—Oct 29

Tranco —Radar top 1MCrUX —Majestic 509,547Umbrella —checked Oct 29

16

morphik.ai621,486 avg · P25▼ 141,228621,486———621,486—Oct 29

Tranco —Radar —CrUX —Majestic 621,486Umbrella —checked Oct 29

17

wavedash.com640,845 avg · P25▲ 33,331640,845566,296top 500k—861,492494,748Oct 29

Tranco 566,296Radar top 500kCrUX —Majestic 861,492Umbrella 494,748checked Oct 29

18

usenaive.ai709,589 avg · P25709,589————709,589Oct 28

Tranco —Radar —CrUX —Majestic —Umbrella 709,589checked Oct 28

19

getnao.io721,893 avg · P25▲ 158,868721,893———721,893—Oct 29

Tranco —Radar —CrUX —Majestic 721,893Umbrella —checked Oct 29

20

paperinstruments.com726,396 avg · P25▲ 76,363726,396———726,396—Oct 29

Tranco —Radar —CrUX —Majestic 726,396Umbrella —checked Oct 29

21

vybe.build760,940 avg · P25▲ 26,992760,940671,888——849,992—Oct 29

Tranco 671,888Radar —CrUX —Majestic 849,992Umbrella —checked Oct 29

22

lucis.life766,475 avg · P25▲ 70,313766,475—top 1M—766,475—Oct 29

Tranco —Radar top 1MCrUX —Majestic 766,475Umbrella —checked Oct 29

23

plexe.ai795,432 avg · P25▼ 12,112795,432———795,432—Oct 29

Tranco —Radar —CrUX —Majestic 795,432Umbrella —checked Oct 29

24

bondapp.io849,863 avg · P25▲ 115,268849,863———849,863—Oct 29

Tranco —Radar —CrUX —Majestic 849,863Umbrella —checked Oct 29

25

airweave.ai850,149 avg · P25▼ 114,934850,149———850,149—Oct 29

Tranco —Radar —CrUX —Majestic 850,149Umbrella —checked Oct 29

26

usethirdchair.com928,270 avg · P25928,270———928,270—Oct 19

Tranco —Radar —CrUX —Majestic 928,270Umbrella —checked Oct 19

27

bitboard.work931,716 avg · P25931,716———931,716—Oct 22

Tranco —Radar —CrUX —Majestic 931,716Umbrella —checked Oct 22

28

kaizenautomation.com941,646 avg · P25941,646———941,646—Oct 19

Tranco —Radar —CrUX —Majestic 941,646Umbrella —checked Oct 19

29

oncactus.com941,711 avg · P25941,711———941,711—Oct 19

Tranco —Radar —CrUX —Majestic 941,711Umbrella —checked Oct 19

30

helix-db.com956,574 avg · P25▼ 17,808956,574———956,574—Oct 29

Tranco —Radar —CrUX —Majestic 956,574Umbrella —checked Oct 29

31

ticketwallet.com966,257 avg · P25▼ 85,080966,257966,257top 1M———Oct 29

Tranco 966,257Radar top 1MCrUX —Majestic —Umbrella —checked Oct 29

32

kaelio.com979,116 avg · P25979,116———979,116—Oct 19

Tranco —Radar —CrUX —Majestic 979,116Umbrella —checked Oct 19

33

cotool.ai980,735 avg · P25980,735———980,735—Oct 7

Tranco —Radar —CrUX —Majestic 980,735Umbrella —checked Oct 7

34

adentris.com985,781 avg · P25985,781———985,781—Oct 19

Tranco —Radar —CrUX —Majestic 985,781Umbrella —checked Oct 19

35

casco.com986,188 avg · P25▼ 63,335986,188———986,188—Oct 29

Tranco —Radar —CrUX —Majestic 986,188Umbrella —checked Oct 29

36

theorem.dev987,944 avg · P25987,944———987,944—Oct 6

Tranco —Radar —CrUX —Majestic 987,944Umbrella —checked Oct 6

37

getauctor.com994,133 avg · P25994,133—top 500k—994,133—Oct 29

Tranco —Radar top 500kCrUX —Majestic 994,133Umbrella —checked Oct 29

38

getbluejay.ai996,891 avg · P25996,891———996,891—Oct 7

Tranco —Radar —CrUX —Majestic 996,891Umbrella —checked Oct 7

39

acolite.ai— avg · P25———————

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

40

aegishealth.us— avg · P25———————

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

41

alkali.engineering— avg · P25———————

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

42

almond.bot— avg · P25———————

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

43

aravolta.com— avg · P25———————

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

44

atlog.ai— avg · P25———————

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

45

atum.works— avg · P25———————

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

46

avallon.ai— avg · P25———————

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

47

aviro.ai— avg · P25———————

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

48

besimple.ai— avg · P25———————

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

49

bitpatrol.io— avg · P25, acquired———————

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

50

bloom.diy— avg · P25——top 1M———Oct 29

Tranco —Radar top 1MCrUX —Majestic —Umbrella —checked Oct 29

51

blueshoe.com— avg · P25———————

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

52

boostrobotics.ai— avg · P25———————

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

53

bramantebio.com— avg · P25———————

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

54

capacitive.ai— avg · P25———————

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

55

cartpole.com— avg · P25———————

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

56

cascadespace.com— avg · P25———————

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

57

cashew-labs.com— avg · P25———————

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

58

chestnutmortgage.com— avg · P25———————

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

59

chrt.com— avg · P25———————

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

60

claimhealth.com— avg · P25———————

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

61

clarm.com— avg · P25———————

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

62

clidey.com— avg · P25———————

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

63

codefour.us— avg · P25———————

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

64

combinely.ai— avg · P25———————

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

65

crimson.law— avg · P25———————

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

66

docketqa.com— avg · P25———————

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

67

eloquentai.co— avg · P25———————

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

68

flotthq.com— avg · P25———————

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

69

foundation-industries.com— avg · P25———————

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

70

freesolo.co— avg · P25———————

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

71

frekil.com— avg · P25———————

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

72

getanana.com— avg · P25———————

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

73

getcohesiveai.com— avg · P25———————

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

74

getden.io— avg · P25———————

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

75

getkashikoi.com— avg · P25———————

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

76

godela.ai— avg · P25———————

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

77

golf.dev— avg · P25———————

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

78

habit.inc— avg · P25———————

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

79

hemut.com— avg · P25———————

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

80

irbc.com— avg · P25———————

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

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

History · every change, public

Oct 29 06:03sync with the YC sync, 12 sites changed

Oct 28 06:03sync with the YC sync, 10 sites changed

Oct 27 06:03sync with the YC sync, 13 sites changed

Oct 26 06:02sync with the YC sync, 3 sites changed

Oct 25 06:03sync with the YC sync, 5 sites changed

Oct 24 06:03sync with the YC sync, 6 sites changed

Oct 23 06:03sync with the YC sync, 11 sites shown

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