Y Combinator Startups

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

24 of 5,218 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

S10 · 24 sites · ← all sites

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

#URLThis weekAvg rankTrancoRadarCrUXMajesticUmbrellaChecked

docker.com4,212 avg · S10▲ 1594,212535top 1ktop 100k27011,831Oct 29

Tranco 535Radar top 1kCrUX top 100kMajestic 270Umbrella 11,831checked Oct 29

ancestry.com16,761 avg · S10, acquired▼ 1,82416,761974top 5ktop 1k2,26047,049Oct 29

Tranco 974Radar top 5kCrUX top 1kMajestic 2,260Umbrella 47,049checked Oct 29

pagerduty.com23,841 avg · S10, public▲ 99923,84115,902top 10ktop 1M12,74642,876Oct 29

Tranco 15,902Radar top 10kCrUX top 1MMajestic 12,746Umbrella 42,876checked Oct 29

padmapper.com84,390 avg · S10, acquired▲ 22,06884,390108,193top 200ktop 500k60,586—Oct 29

Tranco 108,193Radar top 200kCrUX top 500kMajestic 60,586Umbrella —checked Oct 29

hipmunk.comredirected132,297 avg · S10, acquired▲ 37,425132,297210,042——54,552—Oct 29

Tranco 210,042Radar —CrUX —Majestic 54,552Umbrella —checked Oct 29

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

workflowy.com134,661 avg · S10▲ 4,423134,66161,000top 100ktop 500k29,457313,525Oct 29

Tranco 61,000Radar top 100kCrUX top 500kMajestic 29,457Umbrella 313,525checked Oct 29

recurse.com138,340 avg · S10▲ 22,336138,340222,846——53,834—Oct 29

Tranco 222,846Radar —CrUX —Majestic 53,834Umbrella —checked Oct 29

anylist.com142,736 avg · S10▲ 58,529142,73658,078top 50ktop 500k174,512195,617Oct 29

Tranco 58,078Radar top 50kCrUX top 500kMajestic 174,512Umbrella 195,617checked Oct 29

chartio.com215,771 avg · S10, acquired▲ 6,628215,771339,836——91,706—Oct 29

Tranco 339,836Radar —CrUX —Majestic 91,706Umbrella —checked Oct 29

rapportive.comredirected231,168 avg · S10, acquired▲ 164,358231,168364,497——97,838—Oct 29

Tranco 364,497Radar —CrUX —Majestic 97,838Umbrella —checked Oct 29

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

simperium.com301,173 avg · S10, acquired▲ 15,048301,1737,099top 1k—815,34181,080Oct 29

Tranco 7,099Radar top 1kCrUX —Majestic 815,341Umbrella 81,080checked Oct 29

indinero.com332,866 avg · S10▲ 42,778332,866494,619top 1M—171,113—Oct 29

Tranco 494,619Radar top 1MCrUX —Majestic 171,113Umbrella —checked Oct 29

presto.com341,598 avg · S10, public▲ 34,363341,598454,532top 1M—228,663—Oct 29

Tranco 454,532Radar top 1MCrUX —Majestic 228,663Umbrella —checked Oct 29

aerofs.comparked423,856 avg · S10, acquired▲ 288,557423,856———423,856—Oct 29

Tranco —Radar —CrUX —Majestic 423,856Umbrella —checked Oct 29

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

demandsphere.com428,905 avg · S10▼ 5,243428,905———428,905—Oct 29

Tranco —Radar —CrUX —Majestic 428,905Umbrella —checked Oct 29

leftronic.com452,953 avg · S10, acquired▼ 10,934452,953699,430——206,476—Oct 29

Tranco 699,430Radar —CrUX —Majestic 206,476Umbrella —checked Oct 29

futureadvisor.comgone485,362 avg · S10, acquired▼ 22,672485,362———485,362—Oct 29

Tranco —Radar —CrUX —Majestic 485,362Umbrella —checked Oct 29

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

homejoy.comredirected665,709 avg · S10, acquired▼ 88,722665,709———665,709—Oct 29

Tranco —Radar —CrUX —Majestic 665,709Umbrella —checked Oct 29

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

gazehawk.com918,930 avg · S10, acquired918,930———918,930—Oct 16

Tranco —Radar —CrUX —Majestic 918,930Umbrella —checked Oct 16

adgrok.com966,114 avg · S10, acquired966,114———966,114—Oct 19

Tranco —Radar —CrUX —Majestic 966,114Umbrella —checked Oct 19

show 20 more

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.