SaaS startups in San Francisco Bay Area

Zuma

San Francisco

Zuma provides Kelsey, an AI leasing assistant for multifamily resident lifecycle, helping operators automate leasing and resident tasks. It blends agentic AI with humans-in-the-loop to preserve brand voice, accuracy, and empathy, and runs 2

Keeper

Redwood City

Double has everything firms need to communicate with clients, catch coding errors, manage receipts, and streamline their workflows -- all in one place. Powered by a 2-way sync with QuickBooks Online and Xero, Double connects to clients' led

Scritch

San Francisco

Scritch is building the leading AI-powered operating system for veterinary care, providing AI agents to streamline operations for veterinary clinics, including scheduling and clinical workflows.

Blaze

San Francisco

Blaze is the first AI agent that handles marketing for you, founded by Faiyam Rahman and Luc Succès and backed by Y Combinator. Its mission is to free business owners and marketing teams to focus on high-impact growth.

Syntra

San Francisco

Syntra operates in healthcare revenue cycle management, integrating with all major EHR systems. It processes hundreds of millions of dollars in charges annually and aims to increase revenue, reduce audit risk and denials, and shorten accoun

Metis

San Francisco

Metis helps enterprises build reliable AI agents for Fortune 500 enterprises and frontier AI labs; it reports six-figure monthly revenue and 150%+ MoM growth, backed by Y Combinator, CRV, and executives from OpenAI, Google, Mercor, and NVID

Maitai

Redwood City

Maitai is an enterprise AI company that manages the LLM stack for enterprises, aiming for the fastest, most reliable inference. It is trusted by YC startups and public companies to manage their models and agents for real-time use.

Reacher

San Francisco

Reacher is a San Francisco-based B2B software and services company that automates creator marketing for the world’s largest brands, positioning itself as the AI Brand Manager for ecommerce scaling through the creator economy.

Soff

San Francisco

Soff is an AI-powered supply chain hub that integrates with email and ERP systems to automate procurement workflows, leveraging years of supply chain data to save manufacturers time and money.

Saphira AI

San Francisco

Saphira AI builds tools for safety and compliance teams in hardware companies to accelerate and streamline processes, serving startups to industry leaders in semiconductors, aerospace, and robotics, delivering faster, cheaper safety and com

Roame

San Francisco

Roame is a flight search engine that uses credit card points and miles to find redemptions, positioning itself as Google Flights for points; it serves 1 million travelers and is backed by Y Combinator, Goodwater Capital, and Accel’s Starter

A0.dev

San Francisco

a0.dev is a platform generating custom React Native projects to help mobile developers build apps in days, not weeks. It has launched apps used by hundreds of thousands of users and relies on React Native, TypeScript, Node.js, Express, Next

Idler

San Francisco

Idler builds reinforcement learning coding environments that train AI to code like elite engineers using real-world scenarios. It closed a multimillion-dollar contract with a leading foundation lab and is scaling to power the training data

Attunement

San Francisco

Attunement, a YC W24 company, builds compliance infrastructure that connects clinical data pipelines, model outputs, and audit systems to make AI-assisted behavioral care traceable, explainable, and auditable. Clinics cut audit prep time by

Flair Labs

Palo Alto

Flair Labs builds the Flair Agent platform for real estate and lending, enabling teams to deploy autonomous agents that execute complex workflows, synthesize real-time data from diverse sources, and improve decision making.

Photonium

San Francisco

Photonium is building a next-generation design automation platform for optical systems, using AI to automate layout generation, optimization, simulation, tolerancing, and sourcing, marketed as an optics-focused alternative to Cadence or Syn

Stream

San Francisco

Stream Platforms, Ltd is a B Corporation delivering fair financial services and modernizing insurance, whose Stream platform serves three million people through 2,000 brands across UK, Europe and the US, backed by YC and investors as a fina

Complete

San Francisco

Complete provides compensation for fast-growth startups, serving elite tech teams such as Render, Linear, Vercel, and DataStax. Revenue has grown threefold this year, momentum as the company is at an inflection point and plans significant t

Simplify

San Francisco

Simplify builds AI-enabled hiring infrastructure to democratize the job search, offering an AI-powered talent agent to help users plan, manage, and achieve career goals, backed by Craft and Y Combinator, with 1M job seekers applying to 100M

Coperniq

San Francisco

**Coperniq Workflow software for solar & energy contractors ☀️😎** Coperniq is workflow software for solar & energy contractors. It cuts soft cost per installation by $3K (17% of total cost) & accelerates project completion by 45 days (30%

Zen

San Francisco

Zen develops posture-awareness software that nudges users to correct slouching, aiming to free people from physical and mental pain. With 30,000+ users and $3.5M in funding from investors including Y Combinator and Valor Equity Partners, it

HOAi

San Francisco

HOAi is a fast-growing community association management platform acquired by Vantaca in 2024; backed by Cove Hill Partners and JMI Private Equity, it achieved seven-figure ARR growth and now serves over 6 million doors, as Vantaca reached a

Infisical

San Francisco

Infisical is the #1 open-source secret management platform for developers, aiming to make security easier. Based in San Francisco with a remote team, it has raised $3M from Y Combinator and serves customers such as Hugging Face and Delivery

Agave

San Francisco

Agave is an early-stage company modernizing the construction industry. With a 10-year founding team from Graphiq/Amazon, it has raised $3M from YC, Accel, and industry leaders, serves 200+ paying customers, is cash-flow positive, and target

Velt

San Francisco

Velt SDK provides JavaScript toolkit to add collaboration features to apps. Founded by former Google engineers who built AR for Search and Maps, it is YC-backed and aims to ship collaboration experiences and boost growth across creative, an

Vanta

San Francisco

Vanta is a leading automated compliance and trust management platform that centralizes security workflows for organizations of all sizes. A Y Combinator W18 alum, it has raised $350M, employs 700+ people, and has guided 10,000+ customers th

Aspire

San Francisco

Aspire is a leading fintech delivering an all-in-one financial operating system for growing APAC businesses; it has raised over USD 300 million, partnered with Visa and Wise, serves 50,000+ clients (15,000+ in APAC), and has won multiple fi

Aviator

San Francisco

Aviator builds engineering productivity supertools that automate mundane developer workflows. YC-backed, well-funded startup counts Doordash, Square, Benchling, Figma, Bosch, and Slack among customers, with investors Elad Gil and Lenny Rach

AtoB

San Francisco

AtoB modernizes payments infrastructure for trucking and logistics, enabling instant, reliable, and fair capital movement in supply chains. Backed by over $125M from General Catalyst, Y Combinator, Mastercard, it's a Forbes Next Billion-Dol

Mesh

San Francisco

Mesh operates the first global crypto payment network connecting exchanges, wallets, and PSPs for digital asset payments, and is building AI-native accounting infrastructure to automate journal entries, reconciliation, and accruals for high

Adapt API

San Francisco

Adapt provides an infrastructure layer for the property and casualty insurance industry, enabling digitization for traditional insurers and insurtechs; a small team of 11, pursuing the future of insurance.

Laurel

San Francisco

Laurel is the world’s first AI Time platform for professional services firms, founded in 2018. It serves many of the world’s largest accounting, consulting and law firms.

WorkOS

San Francisco

WorkOS is an API platform that enables SaaS products to become enterprise-ready, positioning itself as "Stripe for enterprise features" to help teams cross the Enterprise Chasm.

Owner

Palo Alto

Owner.com provides an all-in-one platform that helps independent restaurants succeed online, positioning itself as a Shopify-HubSpot-style solution for the sector. It has generated tens of millions in revenue, served millions of guests, and

Hightouch

San Francisco

Hightouch is a San Francisco-based data activation company that enables teams to activate customer data at scale atop existing data infrastructure. Its Series C valued at $1.2B, with a client list that includes Calendly and Autotrader.

Fillout

San Francisco

Fillout runs a no-code platform for forms, surveys, quizzes, scheduling, and workflows, serving tens of millions of users monthly and 50,000+ active teams with double-digit growth; its second product, Zite (launched April 2025), is the fast

Kasa

San Francisco

Kasa is the industry-standard brand and operator of flexible accommodations, partnering with institutional real estate owners to convert properties into short-term rentals for business and leisure travelers, using proprietary technology and

Speak

San Francisco

Speak is a language-learning app founded in South Korea that became the country's top language app and now serves learners across markets in 15+ languages, positioning itself as a leading AI company; it has raised over $150M from top invest