69 Best Online Advertising Startups to Watch in 2025

The Definitive Seedtable Ranking of Online Advertising Startups

We track 71,000+ companies and rank them dynamically using our Seedtable Score – a score that uses quantitative and qualitative data points to signal the momentum behind a company. We then monitor the list manually leveraging our expertise as founders and investors.

There are 5,871 start-ups with an aggregate funding of $53.6b. The average funding per company in this subset is $776.7m.

Last update to the database: Feb 18, 2025. See changelog.

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Ozon logo

Ozon

Ozon is a Russian e-commerce platform.

2

Funding Rounds

$21.0m

Money raised

READY Robotics logo

READY Robotics

READY Robotics is a company developing an industrial brand-agnostic operating system (Forge/OS) for industrial robots and automation.

7

Funding Rounds

$60.6m

Money raised

Instagram logo

Instagram

Instagram is a Menlo Park-based photo-sharing social media platform.

3

Funding Rounds

$57.5m

Money raised

Chime Bank logo

Chime Bank

A bank offering online banking services with no user no bank fees, and an option to receive direct deposit up to two days early. Chris Britt and Ryan King founded Chime in 2013, and the company is headquartered in San Francisco, California.

6

Funding Rounds

$799.8m

Money raised

Medium (company) logo

Medium (company)

An online publishing platform used by amateur and professional writers. Membership fees are used to pay writers.

1

Funding Rounds

$31.0m

Money raised

Discord logo

Discord

Discord is an American company that offers users a free messenger with support for IP telephony and video conferencing. About 56 million people use the Discord messenger every month, and its total audience exceeds 270 million users.

6

Funding Rounds

$1.7b

Money raised

Pembient logo

Pembient

Pembient uses advances in biotechnology to fabricate horn and other wildlife products to combat the threat to endangered species.

1

Funding Rounds

$50.0k

Money raised

Permutive logo

Permutive

Company providing user behavioral analytics for revenue optimization for websites and smartphone applications

7

Funding Rounds

$124.0m

Money raised

Twitch logo

Twitch

Twitch is a livestreaming video platform and community for gamers.

3

Funding Rounds

$35.0m

Money raised

Pitney Bowes logo

Pitney Bowes

Pitney Bowes is a Stamford, Connecticut-based company founded in 1920 by Walter Bowes.

3

Funding Rounds

$900.0k

Money raised

Faire (company) logo

Faire (company)

Faire is a curated boutique wholesale marketplace connecting local retailers with thousands of emerging and established brands.

9

Funding Rounds

$1.5b

Money raised

Terminal Africa logo

Terminal Africa

Terminal Africa is the developer of a delivery aggregator platform designed to make it easier for Africans to send and receive products globally.

2

Funding Rounds

$103.5k

Money raised

Klarna logo

Klarna

Klarna is a financial technology company providing e-commerce payment solutions for merchants and shoppers.

20

Funding Rounds

$3.8b

Money raised

JSquare logo

JSquare

JSquare is a San Francisco-based company founded in 1985 by Jeff Herman.

Bolt logo

Bolt

Bolt, previously Taxify, is a technology start-up and developer of an on-demand transportation platform.

15

Funding Rounds

$3.2b

Money raised

Full Circle Biochar logo

Full Circle Biochar

Full Circle Biochar is a developer of products and technologies based on bio-charcoal for the agricultural markets.

1

Funding Rounds

$27.5k

Money raised

Dropp logo

Dropp

Geo-Based Minting, Land, and AR, developed with usable NFTs.

1

Funding Rounds

$8.0m

Money raised

Coursera logo

Coursera

Coursera is an online education technology company founded in 2012 by Daphne Koller.

8

Funding Rounds

$431.5m

Money raised

Tacit Knowledge logo

Tacit Knowledge

Tacit Knowledge is a London-headquartered software and IT consulting company developing enterprise software solutions for digital commerce companies.

2

Funding Rounds

$13.9m

Money raised

Openpath Security Inc. logo

Openpath Security Inc.

Openpath Security Inc. is a Culver City, California-based cybersecurity company offering mobile and cloud-enabled access control systems.

3

Funding Rounds

$63.0m

Money raised

Wise logo

Wise

Wise, previously TransferWise, is a company that offers money transfers services founded by Kristo Käärmann and Taavet Hinrikus.

6

Funding Rounds

$898.4m

Money raised

Ning (website) logo

Ning (website)

Ning is an online platform for people and organizations to create custom social networks.

4

Funding Rounds

$134.0m

Money raised

Grove Collaborative logo

Grove Collaborative

Grove Collaborative is an online, subscription-based retailer selling natural home and health products.

4

Funding Rounds

$477.4m

Money raised

About.me logo

About.me

About.me is a company that has developed a platform for users to make personal and professional websites.

2

Funding Rounds

$16.7m

Money raised

Chess.com logo

Chess.com

Chess.com is an internet chess server, news website and social networking website.

1

Funding Rounds

$1.0m

Money raised

Patreon logo

Patreon

Patreon is a San Francisco-based crowdfunding platform for artists and creators founded by Jack Conte and Sam Yam in 2013.

8

Funding Rounds

$398.6m

Money raised

N26 (bank) logo

N26 (bank)

N26 is a is a mobile banking company headquartered in Berlin, Germany.

14

Funding Rounds

$2.5b

Money raised

Khan Academy logo

Khan Academy

Khan Academy is a nonprofit online educational organization that was founded in 2008.

5

Funding Rounds

$19.7m

Money raised

Revolut logo

Revolut

Revolut is a London-based Fintech startup and bank offering mobile banking, card payments, money remittance, and foreign exchange services.

12

Funding Rounds

$1.7b

Money raised

Superplastic logo

Superplastic

Superplastic is a creative product and experience studio founded in 2018.

7

Funding Rounds

$66.0m

Money raised

Hawkers (company) logo

Hawkers (company)

Hawkers is an Elche, Spain-based sunglass brand.

2

Funding Rounds

$80.9m

Money raised

BrightTALK logo

BrightTALK

BrightTALK is a platform developer for B2B companies to host webinars and virtual events.

1

Funding Rounds

$20.5m

Money raised

Misterb&b logo

Misterb&b

Misterb&b offers a property rental marketplace used to connect travelers and hosts in the LGBTQ+ community.

4

Funding Rounds

$11.2m

Money raised

Scopely logo

Scopely

Scopely - leading mobile game development company.

8

Funding Rounds

$1.2b

Money raised

Mercury logo

Mercury

Mercury is a company making banking products for startups based in San Francisco and backed by a16z.

4

Funding Rounds

$126.0m

Money raised

Juno logo

Juno

Juno, previously known as OnJuno, is a neobanking platform that offers interest-earning personal checking accounts. The platform allows all transactions to be managed from an iPhone or Android application, and users can be paid in cryptocurrency through direct deposit.

4

Funding Rounds

$33.2m

Money raised

Stardust logo

Stardust

Stardust is a company that develops solutions for gaming in the metaverse.

2

Funding Rounds

$35.0m

Money raised

Physna logo

Physna

Physna is a Cincinnati-based 3D modelling software company offering 3D models understandable by software applications for manufacturing, engineering, product design, 3D printing, augmented reality and virtual reality applications.

4

Funding Rounds

$84.9m

Money raised

Haptik logo

Haptik

Haptik is a company developing conversational AI for customer experience.

2

Funding Rounds

$12.2m

Money raised

Whatnot logo

Whatnot

Whatnot is a California-based livestream shopping platform and marketplace.

7

Funding Rounds

$484.7m

Money raised

Hugo Boss logo

Hugo Boss

Hugo Boss is a major German luxury fashion company.

1

Funding Rounds

Vungle logo

Vungle

Vungle (Vungle, Inc.) is startup which powers video advertisements inside of mobile apps and games.

4

Funding Rounds

$42.5m

Money raised

Zeel (e-commerce company) logo

Zeel (e-commerce company)

Zeel is a New York City-based provider of in-person and virtual on-demand massage and health services from vetted therapists.

9

Funding Rounds

$24.5m

Money raised

App Samurai logo

App Samurai

App Samurai is a San Francisco-based company that provides mobile marketing technology.

4

Funding Rounds

$4.4m

Money raised

Eleven Labs logo

Eleven Labs

ElevenLabs is a voice artificial intelligence (AI) research and development company developing text-to-speech and voice cloning software.

2

Funding Rounds

$21.0m

Money raised

Starling Bank logo

Starling Bank

Starling is an UK-based mobile-first digital banking startup.

10

Funding Rounds

$1.1b

Money raised

Invoca logo

Invoca

An artificial intelligence company offering a call tracking and conversational analytics for marketers.

7

Funding Rounds

$169.8m

Money raised

Udaan (company) logo

Udaan (company)

Udaan is an Indian business-to-business e-commerce company based in Bengalore. It was registered as Hiveloop Technology pvt.ltd. in 2016.

10

Funding Rounds

$5.5b

Money raised

Back Market logo

Back Market

Back Market is an online refurbished goods marketplace connecting consumers with sellers of electronic devices.

9

Funding Rounds

$1.3b

Money raised

Simplilearn logo

Simplilearn

Simplilearn is an educational technology company with a focus on courses for digital skills.

5

Funding Rounds

$76.0m

Money raised

Klaviyo logo

Klaviyo

Klaviyo is a marketing automation software company which has a email software platform with SMS for ecommerce companies.

6

Funding Rounds

$678.5m

Money raised

GumGum logo

GumGum

GumGum is a Santa Monica, California-based developer of computer vision and machine learning systems for contextually driven advertising and brand protection.

6

Funding Rounds

$107.8m

Money raised

Ant Financial logo

Ant Financial

A venture capital firm in China that focuses on bringing inclusive financial services to the world.

4

Funding Rounds

$22.0b

Money raised

Launch House logo

Launch House

Launch House is a physical and digital community for entrepreneurs and creators.

2

Funding Rounds

$15.0m

Money raised

Casper (company) logo

Casper (company)

Casper is a memory-foam mattress retailer.

6

Funding Rounds

$330.5m

Money raised

Badoo logo

Badoo

Badoo is a dating-focused social networking service.

1

Funding Rounds

$30.6m

Money raised

TripleLift logo

TripleLift

TripleLift is an American multinational technology company developing a platform that enables scalability for native, branded content and OTT advertising.

4

Funding Rounds

$18.5m

Money raised

ClearTax logo

ClearTax

ClearTax is a financial technology company providing solutions for income tax filing, GST and mtual fund investments. It participated in the S14 cohort of Y Combinator.

2

Funding Rounds

$62.0m

Money raised

MoneyLion logo

MoneyLion

MoneyLion is a mobile banking platform for borrowing, saving, and investing.

6

Funding Rounds

$324.5m

Money raised

Servify logo

Servify

Servify is a device lifecycle management platform, which integrates multiple OEM Brands and a sales and service ecosystem to deliver an after-sales service experience.

2

Funding Rounds

$26.4m

Money raised

Pathmatics logo

Pathmatics

Pathmatics provides AI-powered analytics software for marketers that can extract data about various channels, including social media, video, and display.

1

Funding Rounds

$3.0m

Money raised

D2L logo

D2L

D2L is a provider of elearning solutions founded by John Baker that uses the Brightspace learning management platform.

3

Funding Rounds

$168.5m

Money raised

Paddle (company) logo

Paddle (company)

Paddle is a London-based developer of a software-as-a-service commerce platform offering payments infrastructure for software companies.

8

Funding Rounds

$543.7m

Money raised

Weee! logo

Weee!

Weee! is an Asian and Hispanic grocer in North America, founded by Larry Liu.

8

Funding Rounds

$863.8m

Money raised

Big Time Studios logo

Big Time Studios

Big Time is a multiplayer action RPG that makes collectable NFTs accessible to everyone.

2

Funding Rounds

$110.3m

Money raised

Drivezy logo

Drivezy

Drivezy, formerly JustRide, is a marketplace for self-drive cars and two-wheeler rentals, headquartered in Bangalore, Karnataka.

2

Funding Rounds

$30.0m

Money raised

Fnatic logo

Fnatic

Fnatic is a professional eSports organization with headquarters in London.

2

Funding Rounds

$19.0m

Money raised

Jaagodeal logo

Jaagodeal

Jaagodeal is an online shopping platform in Bangladesh that was founded in 2018. It sells a wide range of products, including fashion, home goods, electronics, and beauty products.

1

Funding Rounds

$1.0m

Money raised

Serve Robotics logo

Serve Robotics

Serve Robotics is a developer of autonomous robotic vehicles intended for use in delivery, especially food delivery, in urban settings.

3

Funding Rounds

$23.0m

Money raised