Categories

Y Combinator

Every active, public and acquired Y Combinator company with a website.

4,505 sites. 8.5% blocked our crawler this week.

Body text

  1. Inter
    22%971 sites−0.3 pts
  2. Geist
    7.0%314 sites+0.3 pts
  3. system-ui
    5.2%235 sites
  1. DM Sans
    170 sites
  2. Poppins
    120 sites−0.1 pts
  3. Manrope
    94 sites−0.2 pts
  1. Montserrat1.7%
  2. Instrument Sans1.5%
  3. Open Sans1.5%
  4. Plus Jakarta Sans1.4%
  5. Roboto1.3%
  6. IBM Plex Sans1.3%
  7. Lato1.2%
  8. Satoshi1.1%
  9. Figtree1.1%
  10. Helvetica Neue0.9%
Share among the 2574 sites we can trace back to 2016Dashed lines before September 2026 are estimates from web archives. Solid lines are our weekly crawl. The chart follows a fixed set of 2574 sites, not every site in the rankings.
Show as table
PeriodSourceInterGeistDM SansPoppinsManropeMontserrat
2016 Q1Web archive estimate, 1072 sites0.0%0.0%0.0%0.0%0.0%0.0%
2016 Q2Web archive estimate, 1810 sites0.0%0.0%0.0%0.0%0.0%1.1%
2016 Q3Web archive estimate, 186 sites––––––
2016 Q4Web archive estimate, 584 sites––––––
2017 Q1Web archive estimate, 492 sites––––––
2017 Q2Web archive estimate, 1682 sites0.0%0.0%0.0%0.0%0.0%1.3%
2017 Q3Web archive estimate, 629 sites––––––
2017 Q4Web archive estimate, 467 sites––––––
2018 Q1Web archive estimate, 451 sites––––––
2018 Q2Web archive estimate, 1970 sites0.0%0.0%0.0%1.1%0.0%1.1%
2018 Q3Web archive estimate, 2233 sites0.0%0.0%0.0%1.1%0.0%2.3%
2018 Q4Web archive estimate, 1376 sites0.0%0.0%0.0%0.0%0.0%6.1%
2019 Q1Web archive estimate, 2256 sites0.0%0.0%0.0%0.4%0.0%4.0%
2019 Q2Web archive estimate, 2857 sites0.0%0.0%0.0%0.3%0.0%3.4%
2019 Q3Web archive estimate, 2064 sites0.7%0.0%0.0%1.1%0.0%3.3%
2019 Q4Web archive estimate, 2297 sites0.3%0.0%0.0%0.6%0.0%3.3%
2020 Q1Web archive estimate, 2273 sites1.2%0.0%0.3%0.9%0.0%3.0%
2020 Q2Web archive estimate, 1919 sites0.8%0.0%0.4%2.5%0.0%2.5%
2020 Q3Web archive estimate, 1530 sites1.8%0.0%0.4%1.3%0.0%2.2%
2020 Q4Web archive estimate, 1473 sites2.3%0.0%0.0%1.4%0.0%1.4%
2021 Q1Web archive estimate, 1634 sites1.5%0.0%0.4%1.9%0.0%3.4%
2021 Q2Web archive estimate, 1333 sites3.6%0.0%0.4%1.2%0.4%2.4%
2021 Q3Web archive estimate, 2057 sites3.6%0.0%0.6%3.5%0.2%2.9%
2021 Q4Web archive estimate, 1750 sites5.9%0.0%0.7%3.0%0.3%2.0%
2022 Q1Web archive estimate, 2101 sites7.0%0.0%0.9%2.4%0.0%2.9%
2022 Q2Web archive estimate, 2374 sites6.1%0.0%0.4%3.8%0.0%3.0%
2022 Q3Web archive estimate, 1592 sites8.2%0.0%0.0%3.5%0.0%1.9%
2022 Q4Web archive estimate, 1090 sites8.6%0.0%0.5%4.3%0.0%2.2%
2023 Q1Web archive estimate, 1734 sites9.5%0.0%0.5%2.7%0.0%3.0%
2023 Q2Web archive estimate, 1631 sites8.7%0.0%0.0%2.9%0.0%1.3%
2023 Q3Web archive estimate, 2019 sites11%0.0%0.2%1.8%0.0%1.9%
2023 Q4Web archive estimate, 2074 sites11%0.0%1.0%2.2%0.0%1.7%
2024 Q1Web archive estimate, 1743 sites9.0%0.0%0.7%1.5%0.0%1.5%
2024 Q2Web archive estimate, 1201 sites13%0.3%0.3%3.0%0.7%0.7%
2024 Q3Web archive estimate, 1764 sites15%0.4%1.2%2.0%0.6%0.6%
2024 Q4Web archive estimate, 1490 sites12%0.2%0.9%2.8%0.7%2.4%
2025 Q1Web archive estimate, 1484 sites10%1.7%0.3%2.0%0.7%2.0%
2025 Q2Web archive estimate, 411 sites15%1.2%0.0%3.5%2.4%2.4%
2025 Q3Web archive estimate, 2422 sites13%2.1%1.0%2.3%1.2%1.4%
2025 Q4Web archive estimate, 2463 sites14%1.6%0.9%2.0%0.9%1.9%
2026 Q1Web archive estimate, 276 sites20%2.9%1.4%1.4%0.0%1.4%
2026 Q2Web archive estimate, 186 sites21%3.9%3.9%1.9%1.9%1.9%
2026 Q3Web archive estimate, 83 sites––––––
Sep 27, 2026Our crawl, 6,305 sites20%4.6%4.3%3.5%2.0%1.9%
Oct 4, 2026Our crawl, 6,330 sites20%4.6%4.3%3.5%2.1%1.8%
Oct 11, 2026Our crawl, 6,302 sites20%4.7%4.4%3.5%2.1%1.5%
Oct 18, 2026Our crawl, 6,304 sites20%4.7%4.5%3.3%2.1%1.5%
Oct 25, 2026Our crawl, 6,249 sites20%4.6%4.5%3.4%2.0%1.5%
Nov 1, 2026Our crawl, 6,272 sites20%4.9%4.4%3.4%1.8%1.5%

Headings

Pairings

Font source
  • Self-hosted53%
  • Google Fonts37%
  • System fonts8.5%
  • Adobe Fonts1.4%
  • Other font CDNs0.4%

Platform

  • Next.js35%
  • Other or custom32%
  • Webflow15%
  • Framer7.0%
  • WordPress6.4%
  • Shopify1.1%

Switches

  1. 21st.dev changed its body text from General Sans to Inter

  2. 21st.dev changed its headings from General Sans to Inter

  3. a1zap.com changed its body text from Geist to system-ui

  4. ad.army changed its body text from Mona Sans to ad Army Sans

  5. ad.army changed its headings from Mona Sans to ad Army Sans

  6. adam.new changed its body text from Geist to Switzer

  7. adam.new changed its headings from Geist to Switzer

  8. agentmail.to changed its body text from Inter to marketing Sans

  9. agentmail.to changed its headings from Inter to marketing Sans

  10. agnost.ai changed its body text from Geist to Agnost Sans

Every site

SiteBodyHeadingsPlatform
100x.botsystem-uiUxum
10by10.ioRobotoRobotoWordPress
10xdental.comInterGroteskNext.js
10xscience.comInterInter
1849.bioFunnel SansFunnel SansWordPress
1910.aiNeue Haas Unica W 1 GNeue Haas Unica W 1 GWebflow
1degree.orgSource SansSource Sans
1stcollab.comRoobertRoobertFramer
21st.devInterInterNext.js
222.placecrimson Procrimson ProNext.js
42floors.comMulishMulish
42technologies.comDM SansPoppinsNext.js
500friends.comProxima NovaProxima Nova
64xbio.comSource SansFragment MonoWebflow
6thsense.devChillaxHeming
7cups.comWork SansWork Sans
80000hours.orgProxima NovaMuseo SansWordPress
83sciences.aiOpen Sauce SansOpen Sauce SansNext.js
99minutos.comBarlowBarlowWebflow
9gag.comsystem-uisystem-ui
9mothers.comInterCormorant Garamond
a0.devInterInterNext.js
a1zap.comsystem-uiParalucentNext.js
abacum.aiInterMars StandardFramer
abacus.comNoto SansNoto Sans
abalonebio.comTwklausanne 300Twklausanne 300Webflow
abatable.comPpmoriPpmoriWebflow
abelpolice.comGeistGeistFramer
abinitio-bio.comArialGeorgia
ablejobs.coGD SherpaGD Sherpa
abstra.iosystem-uisystem-ui
absurd.comInterdie Grotesk CNext.js
abundant.aiCourier NewCourier New
accessowl.ioCabinet GroteskCabinet GroteskFramer
acciojob.comSatoshiSatoshiNext.js
acely.comDM SansDM SansNext.js
aclu.orgGtamstandardGtamcompressedWordPress
acolite.aisystem-uiArchivoNext.js
actipulseneuroscience.comMontserratMontserrat
activeloop.aiProxima NovaProxima NovaGatsby
activepieces.comInterSentientNuxt
acunote.comArialArial
acxtherapeutics.comFlamaFlamaWebflow
ad.armyad Army Sansad Army SansNext.js
adam.newSwitzerSwitzer
adapted.appGeistGeistNext.js
adaptional.comIBM Plex SansHalyard DisplayWebflow
adaptyvbio.comGeistGeistNext.js
adenhq.comBricolage GrotesqueBricolage GrotesqueNuxt
adentris.comGeistGeist