111 YC Marketing Startups

111 Y Combinator companies carry the Marketing tag in YC's own directory, across every batch since 2005. Each row shows what the company does, its batch, HQ and status, and links to its YC application reconstructed in the real form, so a founder building a Marketing startup can read how accepted companies answered the same questions.

Companies
111
Top industries
B2B, Consumer and Education
Top locations
San Francisco, New York and London
YC top companies
3
111 reconstructed applications

Read the YC application of all 111 companies

  • Every company's YC application, reconstructed in the real form
  • Filter every batch by industry, country and team size
  • Then find the investors who fund startups like yours

The first 100 companies, top companies first

1
Amplitude
AmplitudeTopDigital Analytics Platform
Winter 2012San Francisco, CAPublic
2
Optimizely
OptimizelyTopThe first all-in-one operating system for marketing
Winter 2010San Francisco, CAAcquired
3
Webflow
WebflowTopProfessional website design and publishing platform.
Summer 2013San Francisco, CAActive
4
1stCollab
1stCollabPerformance-Optimized Influencer Marketing at Scale
Winter 2023San Francisco, CAActive
5
500Friends
500Friendsthe best loyalty and retention marketing partner for CMOs.
Winter 2010San Francisco, CAAcquired
6
Absurd
AbsurdAI Videos
Fall 2025Los Angeles, CAActive
7
Affil.ai
Affil.aiAI Affiliate Network For Financial Companies
Summer 2024San Francisco, CAActive
10
Auxos
AuxosSimulations of real people for market research
Spring 2026San Francisco, CAActive

That is 10 of 111.

Every company below has its YC application reconstructed in YC Insights. Create a free account to read them all.

Read all 111 applications
11
Avalanche
AvalancheReferral program SDK for startups
Winter 2019San Francisco, CAInactive
13
Beluga
BelugaInfluencer marketing that converts
Spring 2025San Francisco, CAActive
15
Bizzy
BizzyBizzy is omni-channel marketing for ecommerce businesses.
Winter 2015San Francisco, CAAcquired
16
Bizzy AI
Bizzy AIBizzy works 24/7 so you never miss a lead.
Summer 2025New York City, NYActive
17
Blaze
BlazeMarketing automation for the modern world
Winter 2022San Francisco, CAActive
18
Bloom
BloomBrand infrastructure for AI
Spring 2026San Francisco, CAActive
19
Bluma
BlumaCanva for short-form video ads
Fall 2025San Francisco, CAActive
20
Booth AI
Booth AIGenerative AI Photographer for E-Commerce
Winter 2023San Francisco, CAAcquired
24
Chute
ChuteDiscover the photos and videos people are taking of your brand or…
Winter 2012San Francisco, CAAcquired
25
Clarm
ClarmBuild governed AI agents on your own data, without code
Spring 2025San Francisco, CAActive
28
Converge
ConvergeAll-in-one marketing measurement for B2C
Summer 2023New York, NYActive
29
Cotera
CoteraThe fastest way to build an AI agent
Winter 2022New York, NYActive
31
CustomerOS
CustomerOSUncover high-fit leads already silently engaging with your brand
Summer 2022London, England, United KingdomInactive
32
Demand Curve
Demand CurveLearn how to build a scalable growth engine
Summer 2019San Francisco, CAActive
33
DemandSphere
DemandSphereSEO & Content Marketing Intelligence
Summer 2010Columbus, OHActive
34
Exly
ExlyOne stop shop for creators to launch, manage & grow their knowledge…
Winter 2019New Delhi, DL, IndiaActive
35
Gauge
GaugeYour marketing agent for organic, paid, and AI search.
Summer 2024San Francisco, CAActive
36
GetCrux
GetCruxAI Creative Strategist
Winter 2024San Francisco, CAActive
37
Gluetrail
GluetrailCreate step by step articles with screenshots and videos 10x faster
Winter 2023Paris, Île-de-France, FranceActive
39
Gooseworks
GooseworksOpenClaw-style AI coworkers for GTM teams
Winter 2023San Francisco, CAActive
40
Hightouch
HightouchThe leading Composable CDP and AI Decisioning platform
Summer 2019San Francisco, CAActive
41
HockeyStack
HockeyStackThe operating system for inbound B2B revenue
Summer 2023San Francisco, CAActive
42
Hublo
HubloHublo is making data-driven marketing simpler. It's a super simple…
Summer 2014Paris, Île-de-France, FranceAcquired
43
Imagine AI
Imagine AIWe reverse engineer B2B growth, starting with LinkedIn.
Fall 2025San Francisco, CAActive
44
InstaAgent
InstaAgentScale marketing campaigns across hundreds of personas
Spring 2026San Francisco, CAActive
46
Interstate Analytics
Interstate AnalyticsMulti-Touch Marketing Analytics
Winter 2016San Francisco, CAInactive
48
JustAI
JustAIAgentic Marketing Platform
Winter 2024San Francisco, CAActive
49
Kaya
KayaMarketing agency for startups: 10x cheaper, better and faster
Summer 2021London, England, United KingdomActive
50
Kite
KiteScreen recorder for stunning product demo videos
Summer 2023San Francisco, CAActive
51
Kular
KularAI Lead Generator
Winter 2022London, England, United KingdomActive
52
Lapis
LapisAI that creates and runs ads, end-end
Fall 2025San Francisco, CAActive
53
Latted
LattedA Unified Editor For AI Video
Winter 2024San Francisco, CAActive
55
LemonLime
LemonLimeFully automated GTM for small business
Summer 2026San Francisco, CAActive
56
Letterdrop
LetterdropBook more meetings with conversational intent
Winter 2020New York, NYActive
57
LocalOn
LocalOnWeb marketing for SMBs & merchants associations.
Summer 2013San Francisco, CAInactive
59
Luthor
LuthorReal-time governance for enterprise communications
Fall 2024San Francisco, CAActive
60
Mailwarm
MailwarmPrevents your emails from landing in spam.
Summer 2020Paris, Île-de-France, FranceActive
61
maintouch
maintouchScale SEO and AI SEO from one platform.
Summer 2023New York, NYActive
62
matagora
matagoraEmpowering local retailers with tech that works for them.
Summer 2019Montreal, QC, CanadaActive
63
Memoir
MemoirAI CMO for Software Companies
Spring 2026San Francisco, CAActive
64
Midrender
MidrenderTurn product features into launch videos
Summer 2023San Francisco, CAActive
66
Motives
MotivesConsumer focus groups run by AI
Summer 2025London, England, United KingdomActive
67
Navattic
NavatticInteractive product demos
Winter 2021New York, NYActive
69
Nowadays
NowadaysAI co-pilot for corporate retreat and event planning
Summer 2023San Francisco, CAActive
71
Optilly/Installmonetizer
Optilly/InstallmonetizerFb ad optimization platform
Winter 2012San Jose, CAInactive
74
Pavoot
PavootAI Event Manager for Customer Events
Spring 2026San Francisco, CAActive
77
Popsy
PopsyAI tool that finds you leads on Reddit and sends them hyper…
Summer 2022Ljubljana, Ljubljana, SloveniaActive
78
Positional
PositionalA modern platform for content marketing & SEO.
Summer 2021Charleston, SCAcquired
79
Rankai
RankaiAI-Native Agency for Organic Growth (SEO & GEO)
Summer 2023San Francisco, CAActive
80
Reforged Labs
Reforged LabsTurn intuition into insights, in minutes
Winter 2022San Francisco, CAActive
81
Rehook.ai
Rehook.aiRun, Track and manage any and all user incentive campaigns.
Winter 2022Bengaluru, KA, IndiaActive
82
Replo
ReploSell anything
Summer 2021San Francisco, CAActive
83
Resonance
ResonanceSelf-improving content bank for marketing
Winter 2024San Francisco, CAAcquired
86
SalesSift
SalesSiftIntelligent Lead Sourcing
Summer 2014London, England, United KingdomInactive
87
Sherpa
SherpaTurn more website visitors into customers
Spring 2026San Francisco, CAActive
88
Slik
SlikSlik enables the long tail to use email outreach.
Summer 2017San Francisco, CAInactive
89
Smobi
SmobiSend texts your customers actually want over RCS
Summer 2023New York, NYActive
92
Superbar
SuperbarSales AI for your Website
Summer 2022Toronto, ON, CanadaActive
95
Syncly
SynclySocial listening for the video era
Winter 2023San Francisco, CAActive
96
tday.com
tday.comAI that turns your product into on-brand marketing content
Spring 2026San Francisco, CAActive
97
Theora
TheoraOpenEvidence for Pharmaceutical Evidence
Summer 2025San Francisco, CAActive
98
Toma
TomaAI for Underserved Industries
Winter 2024San Francisco, CAActive
99
treble.ai
treble.aiWe help companies scale marketing campaigns through WhatsApp
Summer 2019São Paulo, SP, BrazilActive
100
TryNearby
TryNearbyLocal creators for local businesses
Summer 2026Los Angeles, CAActive

The other 11 companies

Every remaining company in this list, A to Z. Each link opens the company's public page.

Applying to YC? Study these applications first.

YC Insights holds the reconstructed application of every company on this page, filterable by batch, industry and country, next to 60,000+ investors who fund startups like yours.

Open YC Insights

About this list

This list is part of Round Funded, an investor database and outreach platform for founders. It covers 60,000+ active VCs, angels, family offices and accelerators with verified contacts, lets you send pitches from your own Gmail, and includes a free Data Room for your raise. How this data is built.

Frequently Asked Questions

How many Y Combinator companies are in tagged Marketing?

This directory lists 111 YC companies in tagged Marketing, out of 6,207 across every batch since 2005. The count updates when the directory is refreshed, and every one of them is on this page with a link to its public profile.

Are the YC applications on these pages real?

No. YC keeps submitted applications private. Every application linked from this list is a reconstruction: the real YC form questions, answered from the company's public data. The Company section is free on each page; the rest opens in YC Insights.

Which companies on this page are best known?

Amplitude, Optimizely and Webflow lead the table above. YC marks 3 of the 111 companies here as top companies, its own list of the highest-valued and highest-revenue alumni.

How do I use this list when applying to YC?

Pick five companies on this page whose product is closest to yours, read their reconstructed applications side by side in YC Insights, and note how each answers the same question. Then write your own answers to that standard.

Where does this data come from?

From YC's public company directory, refreshed by batch, with each company's status, industry and location as YC reports them. Round Funded adds the reconstructed application and the founder profiles; nothing private is published.

What is Round Funded?

Round Funded is an investor database and outreach platform for startup founders. It lists 60,000+ active investors with verified contacts, filtered to recent investment activity, and lets founders send personalized pitches from their own Gmail, track replies, and share a free Data Room. Round+ starts at $99 per month with a 3-day trial.