Top Startups in California (10,000+)

Zocdoc is the tech company at the beginning of a better healthcare experience. Each month, millions of patients use Zocdoc to find in-network neighborhood doctors, instantly book appointments online, see what other real patients have to say, get reminders for upcoming appointments and preventive check-ups, fill out their paperwork online, and more.

McMaster-Carr is trusted by industrial customers around the world to keep manufacturing lines running, operations moving, and turn new ideas into real products. Since 1901, we’ve earned that trust by offering the right products, making them easy to find, and delivering them quickly. Our industry-leading e-commerce experience, indispensable product selection, and world-class service bring hundreds of thousands of customers to our...

Artera is a patient communication and engagement platform designed to assist healthcare providers in managing and automating interactions with patients through various channels, including text, email, phone, and voice AI agents. This innovative solution caters to a diverse range of healthcare entities, such as specialty practices, Federally Qualified Health Centers (FQHCs), health systems, and federal agencies, all of which require...

We are an omnichannel customer acquisition platform with offices throughout the US, Canada and Europe. System1 builds desktop and mobile apps, search engines, and online publications that empower consumers with information while respecting their privacy. We also operate brands that include CouponFollow, Startpage and MapQuest. System1 is a champion of AI technology, investing in the first legal AI called Vinny...

You’ll Like It Here At Northwestern Mutual, we believe that our lives and our work matter. And that doing what’s right is good for everyone. We follow through by designing tech that improves the community and cultivating creative ways to make finance accessible anywhere. These guiding principles have allowed our company to grow for more than 160 years. Here, you’ll be with...

Deepgram is the leading voice AI platform for developers building speech-to-text (STT), text-to-speech (TTS) and full speech-to-speech (STS) offerings. 200,000+ developers build with Deepgram’s voice-native foundational models – accessed through APIs or as self-managed software – due to our unmatched accuracy, latency and pricing. Customers include software companies building voice products, co-sell partners working with large enterprises, and enterprises solving...

Rundoo is the AI-native, all-in-one ERP for independent supply stores: point of sale, inventory, payments, and the general ledger in one system. We serve independent paint, hardware, and farm & feed retailers who've been stuck running their business on outdated point-of-sale systems and a patchwork of disconnected software, and we're built to help them modernize: better experiences for them, their...

Yext (NYSE: YEXT) is the enterprise agentic marketing platform. Built on the world's most comprehensive structured data platform for local businesses, Yext gives brands and their partners the visibility intelligence to win every moment of discovery – across AI and traditional search. Yext's API-first architecture connects structured data to APIs, MCP servers, and generative interfaces, so partners and developers can...

NetBox Labs simplifies the full infrastructure lifecycle for the world’s most demanding technical environments. As the commercial steward of NetBox, the open-source infrastructure system of record trusted by 10,000+ organizations for more than a decade, NetBox Labs streamlines infrastructure procurement, modeling, deployment and management for both humans and agents. The company’s infrastructure intelligence platform powers business-critical systems at companies like...

Crexi is reimagining commercial real estate with an AI-powered platform built to deliver smarter, more efficient solutions at every stage of the deal lifecycle. From real-time data and market insights with Crexi Intelligence, to targeted property marketing and seamless deal management through Crexi PRO, and a transparent, time-bound bidding experience with Crexi Auction— Crexi enables users to evaluate opportunities, maximize...

Since our founding in 2004, Simplex has continued to remain at the forefront of the industry by focusing on innovation, automation, and data-driven analysis. Simplex is a leading technology-driven market-making firm that builds proprietary software to create and capitalize on financial opportunities. We combine talented and dedicated technologists with data-driven employees to solve constantly evolving puzzles in the marketplace. Specializing in...

Lessen is the tech-enabled, end-to-end property service provider that is transforming how commercial and residential real estate services are delivered and managed at scale. Lessen’s technology platform provides data-driven insights that unlock key growth opportunities for the entire real estate ecosystem—including investors, owners, managers, and service providers. The company leverages a network of over 30,000 vetted, qualified vendors (Lessen Affiliates)...

With over 900 team members across multiple companies dedicated to improving lives, we create best-in-class products that bring health and happiness. Our creative content educates the world on making smarter health choices, while the brands we own generate over $600 million of revenue annually. From brand ideation to ad creation to product fulfillment, the entire process happens in-house.

We are a world leader in innovative memory solutions that transform how the world uses information to enrich life for all. For over 45 years, our company has been instrumental to the world’s most significant technology advancements, delivering optimal memory and storage systems for a broad range of applications.

Ambiq® enables intelligence (AI and beyond) everywhere by delivering the lowest-power semiconductor solutions for battery-powered edge devices. As a pioneer in ultra-low power SoCs, Ambiq empowers wearables, IoT, smart home, healthcare, and industrial products with always-on, energy-efficient intelligence. Backed by our SPOT® technology and global innovation leadership, Ambiq is shaping the future of edge AI.

Britebound is changing the way kids learn about careers and navigate postsecondary pathways through exploration, work-based learning, and free digital experiences. We meets students both in and beyond the classroom with digital tools, resources, and information to empower their career planning journeys. We believe that exploring career possibilities, as early as middle school, and having equitable access to education-to-career pathways aligned...

Lob was founded in 2013 by technical co-founders with a vision to connect the world one mailbox at a time. We're transforming the way businesses use direct mail and bringing the power of technology to a traditionally manual channel. Our modern logistics and fulfillment engine helps businesses to build and scale high-quality, personalized direct mail programs without the operational burden....

Philo is a streaming television service that's reimagining the TV experience for the modern viewer. Founded by a group of technology and product enthusiasts, we set out to build the future of television by combining the best of modern technology with the most compelling medium ever invented—delivering the TV experience we've always wanted for ourselves. At our core, Philo provides...

TIDAL is a global music streaming platform bringing fans closer to artists through unique experiences and the highest sound quality. Artists and musicians are inherently entrepreneurial. They face a lot of the same challenges Square constantly works to solve for small business owners. The intersection between artists and the economy is getting increasingly more frequent (examples: merch stores, NFTs, and...

Outset invented a better way to do research: AI-powered user interviews. We created this new category of research technology and now it's growing wildly. Global brands like Hubspot, Microsoft, Uber and Nestle use Outset to achieve deeper, qualitative insights about their users at unprecedented speed and scale. The research industry is massive (>$140B and growing) and ripe for disruption. Incumbents are outdated,...