Top California Fintech Startups (512)

Moov is a payments infrastructure platform making it easy to accept, store, send, and spend money all from a single, elegantly-designed API. Instead of stitching together multiple vendors, software companies simply add Moov to their products to get the latest in payment technology, user onboarding, licensing, compliance, and more.

At Revel, we are revolutionizing the way the world’s most critical hardware is controlled—across aerospace, automotive, energy, and manufacturing sectors. Our next-generation software stack combines an intuitive command/control interface, a specialized programming language tailored for hardware control, and a high-performance runtime environment. We empower engineers to build, test, and deploy critical systems rapidly, reliably, and safely.

Traditional firms rely on interviews, retroactive documentation, and billable hours. Onshore applies AI at the point of substantiation, providing documentation tied directly to source data and pairing it with expert review. The result is defensible, audit-ready work delivered in weeks, not quarters. We help companies claim R&D Tax Credits, 179D Deductions, and Cost Segregation with proof, not process. 500+ companies have trusted Onshore...

Scratch is a dynamic and innovative fintech company at the forefront of patient lending and payment processing, serving a network of over 17,000 veterinary practices across the United States and Canada. Our mission is to revolutionize the veterinary financial experience, ensuring pet parents have seamless access to the treatments they need without the burden of financial stress.

SentiLink is the leading fraud intelligence company, providing financial institutions and fintechs with purpose-built solutions for identity verification and fraud prevention. Our products detect synthetic fraud, identity theft, and hard-to-detect first-party fraud in real time — helping partners stop losses before they happen while approving more legitimate customers. Founded in 2017 by Naftali Harris and Max Blumenfeld, creators of the risk...

Opto Investments (“Opto”) are engineering the future of private markets, offering the solution for wealth managers to efficiently build and manage differentiated private investment programs. Opto’s end-to-end technology solution dramatically streamlines building, fundraising for, and managing a bespoke private markets fund or program, allowing independent investment advisors, family offices, and private banks to scale their offerings without scaling their team. Founded by...

Quanta is the accounting platform and full-service accounting teaQuanta combines an expert in-house accounting team with a modern general ledger to run your accounting end to end—from close and reconciliations to accruals, revenue recognition, and financial statements. When standard software falls short, our accounting and engineering teams build the integrations, schedules, and workflows your business requires. Quanta’s AI reporting layer turns that...

Gynger is a cash flow management solution with embedded financing that gives B2B technology vendors the power to offer flexible payment terms to customers while securing up front payment. With Gynger, finance leaders can leverage a combination of actionable insights and capital to optimize day-to-day cash flows, accelerate deal flows, mitigate risk, and execute long term strategic vision with ease. In 2024,...

Proto is the leader for inclusive multilingual contact centre automation. Governments and businesses use Proto's AI Customer Experience (AICX) platform to ensure local language service, long-term operational efficiency, and citizen protection. Proto deployments are powered by its HermesAI™ engine for local and mixed languages.

At Naehas, we help financial institutions unlock their full potential by accelerating value creation. Our innovative platform is designed to empower financial institutions to deliver personalized, compliant products and offers at unparalleled speed, helping them stay ahead in a competitive market. We specialize in: Personalization at Scale: Quickly craft financial services products tailored to customer needs. Streamlined Compliance: Integrate compliance seamlessly into every...

Legalist is an institutional alternative asset management firm. The firm uses data-driven technology to invest in credit assets at scale. Legalist combines proprietary sourcing technology with rigorous underwriting expertise to generate risk-adjusted returns for its clients.

Pure is building the future of rare coin and precious metal trading. We believe collectors and investors deserve financial infrastructure that matches the standards of modern markets. That is why we are creating a new kind of order book marketplace that brings transparency, efficiency, and trust to an industry still rooted in legacy systems. Started in 2023, Pure is one of...

Frustrations with filing crypto taxes It all started with trying to be compliant when reporting taxes on crypto gains, a nearly impossible task. Our founders envisioned a future where modern API-powered technology automates data ingestion, calculation, and required information and financial reporting. Enable digital assets for the global economy Blockchain, crypto, and tokenized assets are helping modernize financial infrastructure and money movement around...

Fractional helps friends and investing communities co-own real estate together. We’re on a mission to open the private real estate market to everyone by making it inclusive, educational, collaborative, and fun.

Who is i5invest? We are a corporate development firm and support innovative tech founders with our unparalleled network of top decision makers in Strategy, Business Development and M&A. Our primary focus is to support and manage corporate development and cross-border M&A processes for extraordinary tech companies. We know what it is like to be a founder. With our deep domain expertise...

Teak is a Phoenix-based technology company specializing in solutions that enable consumer flexibility for businesses in the experience economy. The company helps businesses transform refunds from a cost-intensive operational burden into a revenue-generating differentiator through easy-to-embed, full-service solutions, such as Smart Refunds and Friendly Insurance, which are designed to maximize revenue, reduce operational costs, and give consumers the confidence to...

Happy Money is a consumer finance company that empowers people to achieve their goals through simple, transparent loans funded by trusted financial institutions. Through its proprietary lending platform, Hive, Happy Money delivers a fully digital experience that simplifies borrowing for consumers and helps credit unions, banks and asset managers diversify balance sheets and scale with confidence. Happy Money’s end-to-end loan origination...

Brightside is the first employer-based financial care platform to drive meaningful ROI for employers by making paychecks go farther for the 72% of Americans who are not financially healthy. Since 2018, its Financial Assistants, proprietary rules engine, and innovative products have helped thousands of families save more than $1,200 each while improving emergency savings and reducing debt, resulting in improved...

Duetti was founded with the mission of getting a wide range of artists quick and easy access to catalog sales and unlocking new investment opportunities. Duetti’s music financing platform raised over $235M of funding, and has helped over 500 artists receive up to $3M for their catalog and single-track masters. The unique model provides data-driven prices for established tracks, allowing...

Formed in 2015, Plum Lending is revolutionary commercial real estate lending, combining the world of data science with traditional lending. Our mission is to help borrowers meet their funding needs with the industry's most efficient and optimal process. In addition, we provide intelligent and reliable funding options. Plum is focused on the fastest-growing but most underserved markets in the country....