Discover the next generation of startups.

Modern Fertility

YCombinator

At-home fertility test for women who aren't ready for kids right now…

We're a women’s health company making personalized reproductive health information more accessible, earlier in life. We make the same laboratory tests that were previously confined to fertility clinics more accessible for women at home. By arming women with powerful information about their reproductive health, Modern Fertility is closing the fertility information gap and enabling women to own the decisions impacting their bodies and futures. We've raised $22 million from Forerunner Ventures, Maveron, Union Square Ventures, First Round Capital, #Angels and Y Combinator.

Molagri

YCombinator

Biopesticides that are safe for humans and bees.

Molagri develops safer, more effective pesticides for agriculture. We design biopesticides that hit a precise molecular target unique to pest insects, knocking out pests while sparing pollinators, beneficial insects, and the wider ecosystem. By modeling how pests are likely to evolve, we stay a step ahead of resistance, keeping our products effective against the pests of today and tomorrow. The higher efficacy and biobased production will also contribute to emissions reductions in both manufacturing and field use. Our founders are PhD lab mates from the University of Toronto who have worked together for six years and published in Nature Communications and Nature Microbiology.

Momentus

YCombinator

The space infrastructure services company

Momentus is a space infrastructure services company. As a first mover, Momentus will offer the most basic, foundational services that enable businesses to flourish in space. With their experienced team of aerospace, propulsion, and robotics engineers, Momentus makes and operates cost-effective and energy-efficient in-space transport and service vehicles that utilize water plasma propulsion technology. Momentus has service agreements in place with numerous private satellite companies, government agencies, and research organizations.

Mount

YCombinator

The AI Agent Insurance Carrier

TLDR: Mount is building the AI insurance carrier, starting with liability coverage for deployed AI agents. As everyone moves AI Agents into production and gives them more responsibility, we help businesses insure and secure them. Whenever responsibility shifts from human operators to autonomous systems, so too does the liability that accompanies it. The systems also introduce new risks: agentic software failures, prompt injection attacks, autonomous workflow errors, data leaks, and more. Legacy insurance was not built for this. Existing policies are often silent, ambiguous, or exclude autonomous software, and traditional insurers lack the data and technical capability to assess deployed AI Systems. Our first product, the Mount AI Liability Policy, is built for mid-market and enterprise companies deploying autonomous AI agents in real business processes. We scan and red-team AI deployments, quantify operational risk, help fix vulnerabilities, and insure the residual risk with purpose-built AI liability coverage. Mount is best thought of as a highly automated version of today's commercial insurance carriers, which run on manual workflows, layers of intermediaries, and tens of thousands of employees. AI enables automation of underwriting, pricing, policy issuance, claims, fraud detection, customer support, and distribution. We believe that the best way to use this opportunity is to rebuild those processes from the ground up.

MOVEdot

YCombinator

AI Agents for Hardware Engineering

Our agents run hardware engineering tasks that normally take hours or days in just a few minutes, allowing engineers to process 100x more data and information. Our platform allows hardware engineers to orchestrate agents for tasks such as analyzing failures across entire test campaigns, pulling the right data and KPIs from their databases, checking how conditions (like temperature or load) affect performance and reliability, and then document findings in reports and dashboards.

Moxion Power Co.

YCombinator

Mobile Energy Storage Technology

Moxion Power manufactures mobile energy storage products and technologies, which enable last-mile electrification in industries such as construction, transportation, events and entertainment, film production and telecommunications.

MTailor

YCombinator

Get measured by your phone in under 30 seconds for perfect fitting…

MTailor is an ipad or iphone service for men to capture their shirt size dimensions and have tailor made shirts made and delivered.

Mth Sense

YCombinator

We're a mobile on-device profiling and ad-serving platform initially…

mth sense focuses on finding solutions to "blind" ads. mth sense offers its users an audience library to target certain demographics and psychographics.

Multifactor

YCombinator

Zero-trust authentication, authorization, and auditing for AI agents

The agentic era is here, but its foundation is dangerously insecure. A growing number of high-profile "AI agent gone rogue" security incidents make headlines each week. As enterprise adoption of agentic software has far outpaced the development of applicable cybersecurity solutions, CISOs have loudly voiced a growing need for verifiable, fine-grained security controls on complex multi-agent systems. That's why we built Multifactor. Multifactor offers best-in-class authentication, authorization, and auditing technologies for agentic systems, allowing users to securely and revocably share online accounts with agents while maintaining fine-grained permissions and a detailed event history. We are doing for AI security what Cloudflare did for web security, Okta did for identity security, and Wiz did for cloud security: defining the category. A world-class "account manager" that allows agents to securely use online accounts on your behalf is just the start—our early enterprise partners include companies using AI agents to manage $7.5+ billion manufacturing supply chains, where the consequences for lapses in security are severe. Our patented AI security technology seamlessly integrates with existing agentic software to thwart attacks like prompt injection, so CISOs and end users alike can breathe a sigh of relief, without slowing the pace of AI adoption.