171 Y Combinator companies in Marketing, with team size, growth, open roles and funding.
Updated weekly, last on November 9, 2026. Roster from Y Combinator's public directory.
| Company | Batch | Team | 6 mo | 12 mo | Open roles | Total raised | Last round |
|---|---|---|---|---|---|---|---|
Professional website design and publishing platform. | S13 | 1,847 | +9% | +16% | 46 | $335M | Undisclosed round$400K, Apr 2025 |
Apollo is the foundation of your entire go-to-market strategy. | W16 | 987 | +44% | +54% | 45 | $251M | Series D$100M, Aug 2023 |
The leading Composable CDP and AI Decisioning platform | S19 | 658 | +14% | +51% | 52 | $332M | Series D$150M, Apr 2026 |
The easiest way to create a beautiful, mobile optimized website. | W13 | 468 | 0% | −1% | 1 | $17.5M | Series A$10M, Aug 2018 |
Lob is the only automation platform that transforms direct mail into… | S13 | 440 | +8% | +14% | 3 | $82.3M | Series C$50M, Feb 2021 |
PartnerStack is a full stack solution for partnerships. | S15Acquired | 374 | +5% | +7% | 0 | $36.2M | Series B$28.9M, May 2021 |
Self-Driving Customer Care | W16 | 310 | +16% | +34% | 14 | $217M | Series C$110M, Apr 2026 |
The AI Retention Platform for Brands & Retailers | W19 | 281 | 0% | −19% | 5 | $106M | Series C$65M, Jun 2022 |
The AI operating system for restaurants | W21 | 214 | +10% | +13% | 1 | $2.3M | Seed$2.3M, Apr 2021 |
Shopify for Beauty and Wellness businesses in Latam | W21 | 186 | +9% | +23% | 1 | $42.8M | Series B$35M, Aug 2025 |
Engage customers through personalized omni-channel messaging | S11 | 165 | −5% | −1% | 8 | $82M | Series C$50M, Jan 2023 |
Video for business. | S11 | 148 | −6% | −12% | 1 | $90.9M | Undisclosed round$15.2M, Apr 2024 |
Track & Boost Your Brand’s Visibility in AI Search | S21 | 141 | +3% | +22% | 1 | $2.6M | Seed$2.5M, Sep 2021 |
AI-powered tech that makes business TV smarter, engaging, and… | W20 | 135 | +26% | +101% | 2 | $27.5M | Debt$3.5M, Jul 2026 |
Rebuilding data in advertising to protect privacy | S14 | 108 | −3% | 1 | $105M | Series C$75M, Nov 2021 | |
In-Person, Hybrid and Virtual Event Management Software | S19 | 102 | +3% | +2% | YC | $4M | Seed$1M, Nov 2021 |
Advertising for the new internet | W23 | 93 | +3% | +19% | YC | $10M | Series A$10M, May 2026 |
We build communities through massively multiplayer mobile games | W08Acquired | 86 | +8% | +9% | 0 | SeedMar 2008 | |
Subscriptions for Shopify | S20Acquired | 78 | −14% | −9% | 0 | $8.4M | Seed$8.3M, Dec 2021 |
Marketing automation for event promoters (email, sms, ads, CRM) | S14 | 78 | +3% | +11% | YC | $27.1M | Secondary$27M, Oct 2026 |
After School & Enrichment Activities Marketplace | W22 | 76 | −7% | −12% | 39 | $790K | Seed$500K, May 2025 |
Interactive product demos | W21 | 73 | +20% | +30% | 0 | $5.4M | Seed$4.2M, Mar 2022 |
We help companies scale marketing campaigns through WhatsApp | S19 | 66 | +8% | +2% | 0 | $15M | Series A$15M, Jul 2022 |
Swayable predicts consumer opinion and the impact of content | W18 | 64 | +3% | +25% | 9 | SeedMay 2019 | |
AppLovin for the food & CPG | S19 | 51 | −2% | −9% | 0 | $8M | Seed$5.3M, Apr 2023 |
No-code email marketing platform to send forms & widgets within emails | S21Acquired | 45 | −10% | −48% | 0 | $2.3M | Seed$2M, Jun 2021 |
Thunkable is the no-code platform to build powerful native mobile apps | W16 | 43 | +5% | 2 | $33.6M | Series B$30M, Feb 2022 | |
Create video by chatting to AI | S22 | 42 | −9% | −19% | 0 | ||
Premier growth platform for restaurants | S22 | 41 | −11% | −31% | 0 | $27.6M | Series A$22M, Feb 2025 |
Mobile marketing analytics and infrastructure | S14Acquired | 37 | +3% | +3% | 0 | $2.5M | Seed$2.5M, Jun 2016 |
Post-booking revenue and capacity optimization for airlines… | W09 | 35 | +9% | YC | $8.6M | Series A$6M, Sep 2022 | |
Marketing automation platform for selling to local businesses. | W21 | 33 | +3% | YC | $5M | Seed$5M, Jul 2024 | |
The CRM powering iconic musicians and events | S20 | 33 | +10% | +14% | YC | $7.5M | Corporate round$3M, Oct 2022 |
Agentic Marketing Platform | W24 | 29 | +32% | +93% | YC | $20.9M | Series A$18.7M, Jun 2026 |
GPT Search & Merchandising for fashion e-commerce | S20 | 28 | +12% | +17% | 0 | $37M | Series A$17M, Feb 2022 |
Performance-Optimized Influencer Marketing at Scale | W23 | 27 | 0% | +13% | YC | $500K | YC investment$500K, Jan 2024 |
OwnLocal automates marketing for over 129,000 SMBs through 3,300… | W10 | 27 | 0% | −4% | 0 | $3.4M | Debt$1.4M, May 2016 |
Replace marketing agencies with AI | F25 | 23 | +35% | +188% | 4 | $5M | Seed$4.5M, Apr 2026 |
The best way to collect and analyze voice and video feedback | W20Acquired | 23 | +28% | +21% | 0 | $4M | Seed$4M, Apr 2025 |
Booktrope provides a software platform that makes it easy for… | W15Inactive | 23 | 0% | 0% | 0 | $2.3M | Angel$1.2M, Apr 2015 |
Software for collaborating with content creators and influencers | W15Acquired | 23 | −8% | −12% | 0 | $12.2M | Series B$1.1M, Dec 2018 |
Empower your customer service team through AI & automation. | S20Acquired | 21 | +250% | +250% | 0 | $4.8M | Undisclosed round$4.8M, Mar 2026 |
AI Email Production - Emails on brand, guaranteed to work, fast. | W14 | 21 | 0% | −25% | 0 | $13.3M | Seed$6M, Jan 2022 |
SEO & Content Marketing Intelligence | S10 | 21 | +5% | +5% | 0 | $1.7M | Seed$1.3M, Oct 2011 |
Scale marketing campaigns across hundreds of personas | X26 | 20 | +233% | +300% | 0 | $500K | YC investment$500K, Jun 2026 |
We help products get discovered & used by AI agents. | S25 | 20 | +18% | +43% | YC | $7M | Seed$6.5M, Oct 2025 |
Be the Answer in AI Search - AI SEO across SEO, GEO & AEO | W25 | 20 | +11% | +18% | YC | $2.7M | Seed$2.2M, Mar 2025 |
AI edited video souvenirs as a service | W16 | 20 | 0% | −5% | 0 | ||
Real-time Nielsen ratings for Brands.Accelerate marketing and product… | W15 | 19 | −5% | −5% | 0 | SeedMar 2015 | |
Tools for AI agents to run marketing for the world's biggest… | W24 | 18 | +29% | +125% | YC | $500K | YC investment$500K, Apr 2024 |
Every launched company in YC's public directory, with its batch, status, industry and location. New companies show up the week YC lists them.
Each company is matched to Crustdata by its website. Crustdata adds team size and its change over 6 and 12 months, open roles from job postings, reported funding, and founders' past employers.
Hiring the most counts distinct roles posted in the last 60 days. Growth needs 10+ people today, shrinking 20+ a year ago, so tiny teams do not top the lists. Rebuilt every week.
The numbers on this page come from three Crustdata API calls. Crustdata tags 5,000+ companies with Y Combinator as an investor; swap the filter for any investor, industry or headcount range and track your own list, with founders' work emails one call away.
# 1. every company with Y Combinator as an investor curl https://api.crustdata.com/company/search \ -H "authorization: Bearer $CRUSTDATA_API_KEY" \ -H "x-api-version: 2025-11-01" \ -d '{ "filters": { "field": "funding.investors", "type": "in", "value": ["Y Combinator"] }, "fields": ["basic_info.name", "headcount.total", "headcount.growth_percent", "funding.total_investment_usd"], "limit": 100 }' # 2. open listings per company, last 60 days (limit 0 = counts only) curl https://api.crustdata.com/job/search \ -H "authorization: Bearer $CRUSTDATA_API_KEY" \ -H "x-api-version: 2025-11-01" \ -d '{ "filters": { "op": "and", "conditions": [ { "field": "company.basic_info.company_id", "type": "in", "value": [...] }, { "field": "metadata.date_added", "type": "=>", "value": "2026-08-24" } ]}, "limit": 0, "aggregations": [{ "type": "group_by", "field": "company.basic_info.company_id", "agg": "count" }] }' # 3. the same company filter as a weekly watch: POST /watch/company/search
171 Y Combinator companies are in Marketing; 98 are active.
19 companies posted roles in the last 60 days, led by Hightouch (52 roles), Webflow (46 roles) and Apollo.io (45 roles). 39 mark themselves as hiring on YC's directory.
By team growth over 6 months (10+ people): InstaAgent (+233%), Apollo.io (+44%) and Uplane (+35%).
Largest latest rounds in the last 12 months, after their YC batch: Hightouch ($150M), Netomi ($110M) and JustAI ($18.7M).