Y Combinator Startups

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

24 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

S10 · 24 sites · ← all sites

24 sites, including 8 parked or gone · show only live sites

#URLThis weekAvg rankTrancoRadarCrUXMajesticUmbrellaChecked

docker.com3,565 avg · S10▼ 1003,565500top 1ktop 100k2609,934Sep 14

Tranco 500Radar top 1kCrUX top 100kMajestic 260Umbrella 9,934checked Sep 14

ancestry.com13,722 avg · S10, acquired▼ 1,51313,722971top 5ktop 1k2,17538,019Sep 14

Tranco 971Radar top 5kCrUX top 1kMajestic 2,175Umbrella 38,019checked Sep 14

pagerduty.com29,683 avg · S10, public▲ 43929,68315,894top 10ktop 1M13,70559,449Sep 14

Tranco 15,894Radar top 10kCrUX top 1MMajestic 13,705Umbrella 59,449checked Sep 14

anylist.com131,637 avg · S10▼ 1,091131,63746,279top 50ktop 500k205,356143,275Sep 14

Tranco 46,279Radar top 50kCrUX top 500kMajestic 205,356Umbrella 143,275checked Sep 14

hipmunk.comredirected133,826 avg · S10, acquired▲ 645133,826210,892——56,760—Sep 14

Tranco 210,892Radar —CrUX —Majestic 56,760Umbrella —checked Sep 14

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

workflowy.com143,267 avg · S10▼ 22,161143,26760,229top 100ktop 500k28,687340,885Sep 14

Tranco 60,229Radar top 100kCrUX top 500kMajestic 28,687Umbrella 340,885checked Sep 14

recurse.com145,496 avg · S10▲ 1,198145,496228,712——62,279—Sep 14

Tranco 228,712Radar —CrUX —Majestic 62,279Umbrella —checked Sep 14

chartio.com224,074 avg · S10, acquired▼ 2,311224,074351,566——96,582—Sep 14

Tranco 351,566Radar —CrUX —Majestic 96,582Umbrella —checked Sep 14

rapportive.comredirected239,297 avg · S10, acquired▼ 1,534239,297374,465——104,129—Sep 14

Tranco 374,465Radar —CrUX —Majestic 104,129Umbrella —checked Sep 14

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

simperium.com294,895 avg · S10, acquired▼ 14,120294,89512,515top 5k—849,93922,232Sep 14

Tranco 12,515Radar top 5kCrUX —Majestic 849,939Umbrella 22,232checked Sep 14

indinero.com305,591 avg · S10▼ 13,478305,591440,884top 1M—170,297—Sep 14

Tranco 440,884Radar top 1MCrUX —Majestic 170,297Umbrella —checked Sep 14

padmapper.com321,064 avg · S10, acquired▼ 2,727321,064124,865top 200ktop 500k64,031774,296Sep 14

Tranco 124,865Radar top 200kCrUX top 500kMajestic 64,031Umbrella 774,296checked Sep 14

presto.com335,208 avg · S10, public▲ 410335,208409,170top 500k—261,245—Sep 14

Tranco 409,170Radar top 500kCrUX —Majestic 261,245Umbrella —checked Sep 14

futureadvisor.comgone452,214 avg · S10, acquired▼ 10,221452,214———452,214—Sep 14

Tranco —Radar —CrUX —Majestic 452,214Umbrella —checked Sep 14

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

aerofs.comparked465,465 avg · S10, acquired▲ 7,216465,465———465,465—Sep 14

Tranco —Radar —CrUX —Majestic 465,465Umbrella —checked Sep 14

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

leftronic.com470,526 avg · S10, acquired▼ 180470,526732,147——208,904—Sep 14

Tranco 732,147Radar —CrUX —Majestic 208,904Umbrella —checked Sep 14

homejoy.comredirected670,617 avg · S10, acquired▲ 72,535670,617———670,617—Sep 14

Tranco —Radar —CrUX —Majestic 670,617Umbrella —checked Sep 14

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

demandsphere.com687,874 avg · S10▼ 24,808687,874———687,874—Sep 14

Tranco —Radar —CrUX —Majestic 687,874Umbrella —checked Sep 14

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

Sep 14 06:03sync with the YC sync, 9 sites changed

Sep 13 06:03sync with the YC sync, 1 site changed

Sep 12 06:02sync with the YC sync, 6 sites changed

Sep 11 06:03sync with the YC sync, 11 sites changed

Sep 10 06:03sync with the YC sync, 15 sites changed

Sep 9 06:03sync with the YC sync, 13 sites changed

Sep 8 06:03sync with the YC sync, 5 sites shown

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