SaaS startups in San Francisco Bay Area

Pylon

Menlo Park

Pylon is a San Francisco-based, B2B-focused customer support platform for post-sales issues across Slack Connect, Teams, email, and in-app chat, marketed as a modern alternative to Zendesk and trusted by hundreds of YC-backed companies; it

Harmonic

San Francisco

Harmonic is a startup discovery engine that converts fragmented sources into structured knowledge about startups, investors, and people, mapping the ecosystem and helping the most promising founders get found and funded by the world's large

Inductive Bio

San Francisco

Inductive Bio uses data, machine learning, software, and domain expertise to rapidly solve ADMET problems with speed and precision, streamlining ADMET workflows as a focused provider in the ADMET problem space.

Greptile

San Francisco

Greptile, a San Francisco AI tooling startup with a six-person team, builds an AI expert on codebases accessible via an API, serving 1,000 software teams; raised $5.3M from Y Combinator, Initialized Capital, SV Angel, and Paul Graham, with

Stainless

San Francisco

✱ Stainless provides robust & polished SDKs for your REST API.They're idiomatic, type-safe, and engineered to feel like handwritten code.API-first companies like OpenAI, Anthropic, Meta, Cloudflare, and Scale use Stainless to generate SDKs

Conversion

San Francisco

Conversion is a modern marketing automation platform for high-growth teams, making B2B marketing faster, smarter, and more personal. Trusted by over 5,000 businesses, it serves customers like Abacum, Clay, Hockeystack, and 11x, helping team

LlamaIndex

San Francisco

LlamaIndex offers an open-source framework that lets developers build agents to parse, extract insights, and act on enterprise documents, reasoning over data and scaling for production. It has 4M+ monthly downloads and 200M+ documents proce

Mage AI

Santa Clara

Mage is a modular workflow system that executes executable blocks to deliver reliable, relevant, and timely AI-ready data outputs; its tractable, compositional, and adaptive blocks enable teams to manage and update data pipelines as needs e

Column Tax

San Francisco

Column Tax democratizes access to financial help by delivering game-changing tax solutions for everyday people, highlighting gaps in financial guidance and the need for affordable tax support (over 100 million Americans can’t cover a $1,000

Speakeasy

San Francisco

Speakeasy is a developer platform for building and deploying agent tools as hosted MCPs, serving startups to Fortune 500s including LaunchDarkly, Fivetran, and Verizon; it emphasizes open development, a GitHub presence, and rapid team growt

LiteLLM

San Francisco

LiteLLM develops open-source developer tooling for the AI software space, enabling access to multiple LLM APIs. It has raised $1.6M in seed funding from Y Combinator, Gravity Fund, and Pioneer Fund, and reports $7M+ ARR while remaining mean

Delightree

San Francisco

Delightree is an all-in-one franchising tech platform for emerging franchise businesses seeking to scale while preserving brand promise, offering integrated tools to streamline launch and day-to-day operations and maintain consistency acros

Spherecast (YC S24)

San Francisco

Spherecast develops an AI-driven platform for planning and execution across supply chains, making physical flows programmable like code. It is backed by Y Combinator, has worked with AG1, and employs seven experts in operations research, co

Forge

San Francisco

Forge automates complex manual processes for the world’s largest enterprises and advances human computer interaction. Backed by Founders Fund and OpenAI, it operates globally, powering Fortune 500 workflows with 98%+ quality across half a m

PlayAI

Mountain View

**Introduction** At [PlayHT](https://play.ht/), our vision is to redefine human interactions with AI agents. Whether it’s for customer support or sales calls, AI tutors, or bringing Gaming NPCs to life, our goal is to revolutionize the way

Chroma

San Francisco

Chroma provides data infrastructure for AI, aiming to accelerate useful and creative AI applications, and positions itself as the leading retrieval solution trusted by developers worldwide.

Finley

San Francisco

Finley is a San Francisco-based company that simplifies debt capital raise and management. A 2021 YC Winter alum, it is backed by Y Combinator and Bain Capital Ventures, with founders from Goldman Sachs, Nova Credit, and Palantir Technologi

Standard Fleet

San Francisco

Standard Fleet develops next-generation fleet management software focused on electric vehicles and aims to become the default software layer for fleet operators, empowering them to maximize efficiency and profitability by unlocking the valu

Two Dots

San Francisco

Two Dots uses AI to reinvent consumer underwriting, starting with residential real estate. It harnesses data in consumer documents to improve lending decisions, pairing its underwriting agent with advanced document and identity anti-fraud c

OpenBlock

San Francisco

OpenBlock builds CLI coding agents; its OB-1 ranked #1 on Terminal Bench ahead of Claude Code and Codex highlights leadership in developer tooling and its aim to empower individuals and teams to create and innovate in software development f

Loop AI

San Francisco

Loop is building an enterprise co-pilot for restaurants, starting with delivery to serve the sector with an enterprise-level assistant.

New Lantern

San Francisco

New Lantern is a radiology software company delivering an AI-powered cloud platform to automate imaging workflows and replace on-premise radiology SaaS. It bills itself as the first AI-powered cloud radiology platform and engages radiologis

Suger

San Francisco

Suger is a Cloud GTM platform that lets software companies list, transact, and co-sell through cloud marketplaces and partner portals (AWS, Azure, GCP, Snowflake, Alibaba), automating cross-functional GTM work for faster deal closure; 250+

Parahelp

San Francisco

Parahelp offers an AI support agent for fast-moving software companies, designed to automate complex support tickets end-to-end and deployable in one day without engineers. With a five-person, founder-heavy team and rapid growth, it is seek

Cambio

San Francisco

Cambio is an AI-powered platform for commercial real estate operations, built by investors for investors, focusing on capital planning and compliance. It partners with Beacon Capital Partners and Madison International Realty and reports a 1

Mach9

San Francisco

Mach9, founded in 2021 in San Francisco, is a geospatial technology company that automates detection and analysis of urban features for transportation planning, turning geospatial data into actionable insights via machine learning and compu

Delphi

San Francisco

Delphi aims to amplify human wisdom—personalized, discoverable, and preservable—while scaling brilliance across generations. It has tripled revenue, users, and Delphi interactions in six months, backed by Sequoia Capital, Founders Fund, Abs

Dynamo AI

San Francisco

Dynamo offers end-to-end privacy, security, and compliance solutions to help organizations prepare for emerging AI regulations and productionize AI with confidence, enabling deployments aligned with evolving rules.

Evidently

San Francisco

Evidently is a Clinical Data Intelligence platform built on 12 years of advanced research in Machine Reading and Knowledge Graph, aiming to dramatically improve the efficiency and effectiveness of clinical data workflows.

Workhelix

Palo Alto

Workhelix evaluates the potential of Generative AI for client organizations by combining advanced research with exhaustive data analysis, assessing how AI can be applied across the enterprise through rigorous, data-driven methods.

Halfmore

Palo Alto

The company offers a platform that enables parents to hire their children as IRS-compliant household employees, streamlining legal, payroll, and tax administration, and enabling custodial Roth IRA contributions, thereby democratizing access

Takeoff

San Francisco

A startup backed by Matrix Partners with an uncapped seed, accepted into Y Combinator; has customers and distribution and a clear path to eight-figure revenue, driven by an execution-focused team of veterans from Stripe, Microsoft, Salesfor

Altimate AI

Sunnyvale

Altimate AI, founded in 2022 in San Francisco, delivers AI-driven automation for enterprise data operations and analytics to automate and accelerate data tasks, aiming to ease overworked data teams; backed by prominent investors and serving

Diversion

San Francisco

Diversion is a well-funded, early-stage company building a modern, cloud-native SCM as the basis of the dev stack for developers worldwide, and claims to be the world's first fully cloud-based version management solution for the creative in

Onecrew

San Francisco

OneCrew is an all-in-one software platform for asphalt paving crews that centralizes estimating, scheduling, invoicing, and communication, helping contractors get more done, faster and enabling more efficient operations on paving projects.

Commenda

San Francisco

The company automates multinational compliance by indexing regulations and enabling fast querying, targeting a $200B market and challenging the Big Four as a nimble alternative; it has raised $10M seed and counts Razorpay, Pine Labs, MPL, a

Replo

San Francisco

Replo, a San Francisco-based company, builds agentic commerce for the internet and grew to 1,000+ paying customers in under a year with no sales or marketing budget, while raising over $8.4 million in seed funding from notable investors.

Poly

San Francisco

Poly provides a personal cloud storage platform for files and media, positioning itself as the most advanced in its category and aiming to replace Finder/File Explorer on the desktop, using proprietary AI to reimagine the stack.

Foundational

San Francisco

Foundational helps data teams build and deploy code more reliably, reducing fragility from code changes and downstream data impacts. Founded by three industry veterans, its team includes professionals from leading companies and addresses a

Vitalize

San Francisco

Vitalize is building an operating system for hospital operations, starting with staffing and scheduling optimization. Backed by Y Combinator and leading health systems, it reached seven-figures in ARR in under six months.