Y Combinator Startups

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

3 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

S08 · 3 sites · ← all sites

3 live · 2 parked or gone — show all

#URLThis weekAvg rankTrancoRadarCrUXMajesticUmbrellaChecked

polleverywhere.com56,470 avg · S08▲ 9,18456,47046,718top 100ktop 500k31,70190,991Oct 29

Tranco 46,718Radar top 100kCrUX top 500kMajestic 31,701Umbrella 90,991checked Oct 29

posterous.com298,501 avg · S08, acquired▼ 63298,50112,467top 500k—2,829880,208Oct 29

Tranco 12,467Radar top 500kCrUX —Majestic 2,829Umbrella 880,208checked Oct 29

backtype.com460,152 avg · S08, acquired▲ 15,661460,152718,548——201,756—Oct 29

Tranco 718,548Radar —CrUX —Majestic 201,756Umbrella —checked Oct 29

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.