Discover the next generation of startups.

Makrwatch

YCombinator

Scale new user acquisition with YouTube Creators

Makrwatch helps D2C companies scale user acquisition with YouTube creators. Our clients see us as an alternative growth channel to Google/Facebook, by reaching their audience at a more efficient cost per acquisition and obtaining high quality customers that are more engaged. Makrwatch has been growing 100%+ year over year, currently processes 2M-5M in billings and helps creators in over 60+ countries. We are reaching 20 team members in 6+ countries, have been fully remote for the past years and aim to reach 20M in billings with 10,000 sponsored videos within the next 18 months.

Miniswap

YCombinator

The Marketplace for Complex Hobbies

Miniswap a marketplace for complex hobbies, starting with Warhammer. In hobbies as complex as Warhammer, finding what you want on general marketplaces is a huge pain. Filters don't work, free-form listings mean that products are regularly misidentified, and piles of counterfeit junk crowd search results. Miniswap saves hobbyists from this chaos with its catalogue of more than 20,000 unique miniatures. Sellers match their listings against Miniswap's catalogue giving buyers more information and structure as they shop. The global market for tabletop games is estimated to be worth $20B in 2025 and Warhammer alone is projected to grow to $3B by 2030. By capturing the market in this untapped niche, Miniswap is strongly positioned to bringing greater transparency, simplicity, and connectivity into adjacent verticals. Miniswap's founding team merges deep domain knowledge with elite programming expertise and years of experience in business consulting and startups. Co-founders Zak and Will met while studying together at Cambridge, bonded over their love of Warhammer and early modern history. They have been best friends ever since.

Outschool

YCombinator

A live online learning platform that empowers kids ages 3–18.

Outschool is an innovative education platform that offers a variety of engaging, small-group classes online. Unlike traditional classes, Outschool classes give kids the unique opportunity to explore their interests in-depth via interactive, live video by experienced, independent educators. When Outschool was founded in 2015, homeschoolers were the first to discover our classes, but it wasn’t long before kids in conventional schools began supplementing their education with fun and unique, interest-based classes. During the COVID-19 pandemic, Outschool became vital to families who wanted to keep kids learning, social, and pursuing their passions. Today, Outschool offers more than 140,000 live online classes to more than 1,000,000 learners in 183 countries worldwide.

PartnerStack

YCombinator

PartnerStack is a full stack solution for partnerships.

The platform supports partner marketing, referral, and reseller activity, and solves for partner application management, engagement, attribution, education, payouts, compliance, and additional partner channel needs. Companies using PartnerStack have their program listed in PartnerStack's marketplace, exposing their program to a growing network of +450,000 partners. These companies see a +30% revenue increase in their partner channels due to partners acquired through PartnerStack's network. The network allows partners to sell multiple SaaS applications from a single platform - a necessity for integrated SaaS solutions investing in channel. The most trusted and fastest growing SaaS companies in the world are turning to PartnerStack to support their channel growth, including Intuit, Asana, Freshworks, Zendesk, Aircall, Intercom, and more.

Povio

YCombinator

Engineering and Design that Fuels Startup Success

Povio is helping founders turn visions into digital realities. With over **1,000 successful projects** under our belt and a robust team of over **200+ skilled professionals**, we are the powerhouse of innovation and design. We've partnered up with over **60 YC founders**, so we get the unique challenges you face and what it takes to build something great. A proud YC Winter 2014 alum, Povio has a legacy of startup success. Our portfolio spans diverse industries, offering bespoke solutions to giants like **Volkswagen**, rising stars like **Flexport**, and notable figures including **Serena Williams** and **Arnold Schwarzenegger.** **Why choose Povio for an extra hand with your project?** Our **400+ happy customers** and a **90% referral rate** speak volumes about our commitment to excellence. We make the software development and product design processes a seamless and delightful experience, with every project backed by top-tier managers and quality assurance analysts to ensure smooth and efficient delivery. Whether you're scaling up, launching new products, or optimizing current systems, povio.com is dedicated to propelling your growth.

Roomstorm

YCombinator

Real time B2B hotel room marketplace for various industries…

Roomstorm has developed the airline industry's first ever fully automated platform for providing hotel accommodations to distressed passengers during flight disruptions. This platform gives airlines the opportunity to directly connect to hotel inventory all over the world, or to give their teams an advanced web portal for the rapid processing of their passengers.

Sciloop

YCombinator

Expert STEM reasoning data for frontier AI labs.

Sciloop creates expert-level math and physics problems that frontier AI models can't solve, then sells the data to AI labs for training and evaluation. Our problems are created by IPhO and IMO medalists — the top 0.01% of STEM talent globally. On our benchmark, models like GPT 5.4 Pro and Gemini 3.1 Pro score 0-5% on our hardest problems. We work with AI labs to supply continuous, fresh training data that pushes the frontier of mathematical and scientific reasoning. Founded by Bilal and Osman, International Physics Olympiad medalists from MIT with hands-on ML research experience at MIT CSAIL.

Shoobs

YCombinator

We help you find and book tickets to great entertainment events that…

Shoobs offers event organisers with a convenient and powerful platform to sell tickets to their events. A couple of years ago we got thinking that selling tickets should be QUICK & EASY! So, we decided to create Shoobs to help event organisers sell out their events efficiently! Shoobs is the leading destination to discover and book great urban culture events in the UK, such as Hip Hop concerts and RnB club nights.

SmartAsset

YCombinator

Marketplace connecting consumers to financial advisors

SmartAsset is an online destination for consumer-focused financial information and advice. Reaching approximately 59 million people each month (as of January 2024) through its educational content and personalized calculators and tools, SmartAsset's mission is to help people make smart financial decisions. Additionally, SmartAsset powers SmartAsset AMP, a national marketplace connecting consumers to financial advisors. Building on SmartAsset’s relationship with millions of investors, SmartAsset AMP connects financial advisors directly with prospects who meet their target client profile. Our algorithm matches consumers with up to three fiduciary financial advisors. In 2023, SmartAsset helped advisors close an estimated $34 billion.