Y Combinator Startups

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

24 of 5,025 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

S10 · 24 sites · ← all sites

24 sites, including 7 parked or gone · show only live sites

#URLThis weekAvg rankTrancoRadarCrUXMajesticUmbrellaChecked

docker.com3,876 avg · S10▲ 53,876492top 1ktop 500k26510,872Jul 30

Tranco 492Radar top 1kCrUX top 500kMajestic 265Umbrella 10,872checked Jul 30

ancestry.com13,166 avg · S10, acquired▲ 2,28613,1661,003top 5ktop 1k2,14436,350Jul 30

Tranco 1,003Radar top 5kCrUX top 1kMajestic 2,144Umbrella 36,350checked Jul 30

pagerduty.com19,628 avg · S10, public▼ 6919,62815,991top 10ktop 1M14,94727,946Jul 30

Tranco 15,991Radar top 10kCrUX top 1MMajestic 14,947Umbrella 27,946checked Jul 30

workflowy.com123,981 avg · S10▲ 186123,98160,387top 100ktop 500k28,589282,966Jul 30

Tranco 60,387Radar top 100kCrUX top 500kMajestic 28,589Umbrella 282,966checked Jul 30

anylist.com140,516 avg · S10▲ 340140,51648,613top 50ktop 500k206,148166,788Jul 30

Tranco 48,613Radar top 50kCrUX top 500kMajestic 206,148Umbrella 166,788checked Jul 30

hipmunk.com142,520 avg · S10, acquired▼ 1,486142,520227,781——57,258—Jul 30

Tranco 227,781Radar —CrUX —Majestic 57,258Umbrella —checked Jul 30

recurse.com146,391 avg · S10▲ 41146,391230,521top 1M—62,261—Jul 30

Tranco 230,521Radar top 1MCrUX —Majestic 62,261Umbrella —checked Jul 30

chartio.com238,933 avg · S10, acquired▲ 1,227238,933375,583——102,282—Jul 30

Tranco 375,583Radar —CrUX —Majestic 102,282Umbrella —checked Jul 30

rapportive.comredirected259,919 avg · S10, acquired▲ 4,054259,919413,529——106,308—Jul 30

Tranco 413,529Radar —CrUX —Majestic 106,308Umbrella —checked Jul 30

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

indinero.com292,551 avg · S10▲ 11,015292,551416,303top 500k—168,798—Jul 30

Tranco 416,303Radar top 500kCrUX —Majestic 168,798Umbrella —checked Jul 30

simperium.com309,699 avg · S10, acquired▲ 24,621309,69915,747top 5k—814,15899,192Jul 30

Tranco 15,747Radar top 5kCrUX —Majestic 814,158Umbrella 99,192checked Jul 30

padmapper.com353,531 avg · S10, acquired▲ 721353,531110,030top 200ktop 500k62,449888,115Jul 30

Tranco 110,030Radar top 200kCrUX top 500kMajestic 62,449Umbrella 888,115checked Jul 30

presto.com356,207 avg · S10, public▼ 2,265356,207443,406top 500k—269,007—Jul 30

Tranco 443,406Radar top 500kCrUX —Majestic 269,007Umbrella —checked Jul 30

leftronic.com452,756 avg · S10, acquired▲ 526452,756706,523——198,988—Jul 30

Tranco 706,523Radar —CrUX —Majestic 198,988Umbrella —checked Jul 30

aerofs.comparked488,732 avg · S10, acquired▼ 7,015488,732———488,732—Jul 30

Tranco —Radar —CrUX —Majestic 488,732Umbrella —checked Jul 30

this domain is parked; the rank measures the placeholder, not the company — the domain is on afternic.com's nameservers, a domain sale platform

futureadvisor.comgone490,596 avg · S10, acquired▲ 8,758490,596———490,596—Jul 30

Tranco —Radar —CrUX —Majestic 490,596Umbrella —checked Jul 30

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

demandsphere.com596,057 avg · S10▼ 12,553596,057———596,057—Jul 30

Tranco —Radar —CrUX —Majestic 596,057Umbrella —checked Jul 30

homejoy.comredirected748,872 avg · S10, acquired▲ 7,994748,872———748,872—Jul 30

Tranco —Radar —CrUX —Majestic 748,872Umbrella —checked Jul 30

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

adgrok.comgone— avg · S10, acquired———————

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

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

fanvibe.comparked— avg · S10, acquired———————

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

this domain is parked; the rank measures the placeholder, not the company — the domain is on namebrightdns.com's nameservers, a domain sale platform

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.