This article showcases our top picks for the best San Francisco based Developer APIs companies. These startups and companies are taking a variety of approaches to innovating the Developer APIs industry, but are all exceptional companies well worth a follow.
We tried to pick companies across the size spectrum from cutting edge startups to established brands.
We selected these startups and companies for exceptional performance in one of these categories:
- Innovation
- Innovative ideas
- Innovative route to market
- Innovative product
- Growth
- Exceptional growth
- Exceptional growth strategy
- Management
- Societal impact
Top San Francisco Developer APIs Startups
Data sourced from Crunchbase and SemRush.
Nylas
Crunchbase Website Twitter Facebook Linkedin
Nylas is an API platform that helps developers build features that connect to every email, calendar, and contacts provider in the world.
Algolia
Crunchbase Website Twitter Facebook Linkedin
Algolia is the Search-as-a-Service platform that enables companies to deliver fast and relevant digital experiences that drive real results.
RevenueCat
Crunchbase Website Twitter Facebook Linkedin
RevenueCat is a mobile subscription toolkit that makes it easy to build and manage in-app purchases and subscriptions.
Mux
Crunchbase Website Twitter Facebook Linkedin
Mux is a video platform designed to make video streaming and analytics possible for every development team.
Extend
Crunchbase Website Twitter Facebook Linkedin
Extend provides extended warranties as a service to merchants and innovates the broken customer experience associated with them.
MuleSoft
Crunchbase Website Twitter Facebook Linkedin
MuleSoft provides an integration and API platform that makes it easy to connect data from any system to create connected experiences.
Checkr
Crunchbase Website Twitter Facebook Linkedin
Checkr seeks to automate the process of professional background checks.
SightCall
Crunchbase Website Twitter Facebook Linkedin
SightCall is a live video SaaS enabling visual support for enterprises enriched by Augmented Reality and Artificial Intelligence insights.
Kong
Crunchbase Website Twitter Facebook Linkedin
Kong is the cloud-connectivity company offering the industry-leading service connectivity platform designed for modern architectures.
Lob
Crunchbase Website Twitter Facebook Linkedin
Lob provides direct mail and address verification APIs which allows businesses to send personalized mail to their customers.
RapidAPI
Crunchbase Website Twitter Facebook Linkedin
RapidAPI is an API marketplace that enables developers to find and connect to APIs.
Merge
Crunchbase Website Twitter Facebook Linkedin
One API to integrate with all HR, payroll, recruiting, and accounting platforms.
OPSWAT
Crunchbase Website Twitter Facebook Linkedin
OPSWAT protects critical infrastructure by enabling the safe transfer of files and devices to and from secure environments.
Deepgram
Crunchbase Website Twitter Facebook Linkedin
Deepgram is a technology startup that develops an enterprise-focused automatic speech transcription and analysis platform.
Treasury Prime
Crunchbase Website Twitter Facebook Linkedin
Treasury Prime is a Banking-as-a-Service company that connects banks and FinTechs through an API.
Womply
Crunchbase Website Twitter Facebook Linkedin
A local commerce platform that provides apps, APIs, marketing, and financial tools for over 500,000 American businesses.
Apollo
Crunchbase Website Twitter Facebook Linkedin
Apollo is the GraphQL company. Its Data Graph Platform helps developers, startups, and enterprises get the most out of GraphQL.
Clearbit
Crunchbase Website Twitter Facebook Linkedin
Clearbit develops business intelligence to help companies find more information of customers in order to increase sales and reduce fraud.
HelloSign
Crunchbase Website Twitter Facebook Linkedin
HelloSign offers fast, secure, and legally binding eSignatures for businesses.
Tetrate
Crunchbase Website Twitter Facebook Linkedin
Tetrate provides enterprise-ready service mesh for all workloads and all environments.
Unit21
Crunchbase Website Twitter Facebook Linkedin
Unit21 is a platform that provides no-code tools and services for risk and compliance teams.
PubNub
Crunchbase Website Twitter Facebook Linkedin
The PubNub Data Stream Network enables mobile and web developers to build and scale realtime apps.
Courier
Crunchbase Website Twitter Facebook Linkedin
The fastest way for developers to build notifications for their app. Email, SMS, push, chat, and more.
Pachyderm
Crunchbase Website Twitter Facebook Linkedin
Pachyderm is an enterprise-grade data science platform that makes explainable, repeatable, and scalable AI/ML a reality.
Token Transit
Crunchbase Website Twitter Facebook Linkedin
Token Transit is a provider of a mobile ticket booking application intended to help riders pay for transit via a mobile application.
WorkOS
Crunchbase Website Twitter Facebook Linkedin
WorkOS provides APIs to make applications enterprise-ready, with pre-built features and integrations required by IT admins.
Firebase
Crunchbase Website Twitter Facebook Linkedin
Firebase is Google’s mobile platform that develops apps that grow users base on iOS, Android, or the Web.
Aquarium
Crunchbase Website Twitter Facebook Linkedin
Aquarium is expertise in making machine learning accessible to its customers that helps to simplify their models by improving datasets.
MonkeyLearn
Crunchbase Website Twitter Facebook Linkedin
MonkeyLearn is a Text Analysis platform with Machine Learning to automate business workflows and save hours of manual data processing.
Kover
Crunchbase Website Twitter Facebook Linkedin
Kover develops micropremium products for consumers’ everyday pain points.
Stytch
Crunchbase Website Twitter Facebook Linkedin
Stytch improves security and user experience with passwordless authentication.
ReadMe
Crunchbase Website Twitter Facebook Linkedin
ReadMe provides every company the ability to quickly create beautiful documentation, and build loyal, productive developer communities.
Plivo
Crunchbase Website Twitter Facebook Linkedin
Plivo is a leading cloud communication platform that helps companies quickly program voice and SMS capabilities into their applications.
Alchemy
Crunchbase Website Twitter Facebook Linkedin
Alchemy is a developer platform that helps companies to build reliable decentralized applications.
Postman
Crunchbase Website Twitter Facebook Linkedin
Postman is the collaboration platform for API development.
Wage
Crunchbase Website Twitter Facebook Linkedin
Verix is a seamless APIs for real-time income and employment verification.
Pixie
Crunchbase Website Twitter Facebook Linkedin
At Pixie Labs, we build machine intelligence systems which empower developers to engineer the future.
Nexmo
Crunchbase Website Twitter Facebook Linkedin
Nexmo provides innovative communication SMS and Voice APIs that enable applications and enterprises to easily connect to their customers.
Citadel – Payroll APIs
Crunchbase Website Twitter Facebook Linkedin
With Citadel, users can easily connect their payroll account and instantly verify employment, income, and identity.
DeepSource
Crunchbase Website Twitter Facebook Linkedin
Deepsource is an enterprise tech startup that provides an automated tool to review codes.
Automate.io
Crunchbase Website Twitter Facebook Linkedin
Use tens of cloud apps? Connect them the way you want. Sync data, automate workflows – marketing, sales and more.
Stronghold
Crunchbase Website Twitter Facebook Linkedin
Stronghold creates virtual payment networks that give developers access legacy and next-generation payment networks through a simple API.
Swiftype
Crunchbase Website Twitter Facebook Linkedin
Swiftype is a provider of SaaS-based site and enterprise search platform used to fully customize the search experience on websites.
Apisec.ai
Crunchbase Website Twitter Facebook Linkedin
Apisec.ai is an enterprise-class API security management platform that delivers instant and continuous API security coverage and compliance
BetterDoctor
Crunchbase Website Twitter Facebook Linkedin
BetterDoctor, a technology company, delivers provider directory data and has a database that can be accessed through a responsive API.
Autocode
Crunchbase Website Twitter Facebook Linkedin
An online code editor with API autocomplete, instant hosting, and a Standard Library. Sync data, build bots and customize workflows.
Airbrake.io
Crunchbase Website Twitter Facebook Linkedin
Airbrake is an error tracking company that collects and aggregates errors in web apps for developers.
Apiary
Crunchbase Website Twitter Facebook Linkedin
Apiary provides tools that help companies build, test, monitor, and document web APIs.
Apres
Crunchbase Website Twitter Facebook Linkedin
Apres is an analytics platform built to scale and explain AI decision making.
Upcall
Crunchbase Website Twitter Facebook Linkedin
Upcall is the human-powered outbound sales & marketing calling platform.
Mashery
Crunchbase Website Twitter Facebook Linkedin
Mashery is a TIBCO company providing API management services that enable companies to leverage web services as a distribution channel.
Authy
Crunchbase Website Twitter Facebook Linkedin
Authy provides an API for developers to customize the user experience when adding two-factor authentication and multiple add-ons for apps.
ModernTax
Crunchbase Website Twitter Facebook Linkedin
ModernTax is API platform that democratizes access to tax records for business services companies.
Timekit
Crunchbase Website Twitter Facebook Linkedin
Timekit empowers developers and designers through a set of unified APIs that deliver the entire booking infrastructure.
Kimono Labs
Crunchbase Website Twitter Facebook Linkedin
Kimono Labs is an online platform that allows its users to convert their websites into APIs.
Jido Maps
Crunchbase Website Twitter Facebook Linkedin
Jido Maps is a software company that offers an API for persistent augmented reality.
Runscope
Crunchbase Website Twitter Facebook Linkedin
Runscope develops tools that support the modern application development life cycle.
Grokstyle
Crunchbase Website Twitter Facebook Linkedin
Grokstyle develops an app that automatically identifies furniture and home decor from just about any picture or angle.
Seam
Crunchbase Website Twitter Facebook Linkedin
Seam is an API for developers to control homes and buildings.
isocket
Crunchbase Website Twitter Facebook Linkedin
isocket offers a technology platform that is focused on buying and selling fixed price inventory.
Agnitus
Crunchbase Website Twitter Facebook Linkedin
Agnitus is a developer of touch-enabled learning applications.
Protonet
Crunchbase Website Twitter Facebook Linkedin
Protonet provides a cloud-based social project management and collaboration platform.
Bitext
Crunchbase Website Twitter Facebook Linkedin
Bitext develops the most accurate multilingual text analysis engines in the market such as middleware for chatbots and lemmatization.
Driven, Inc.
Crunchbase Website Twitter Facebook Linkedin
Driven, Inc. is the industry leader in Big Data application development and performance management solutions.
3scale
Crunchbase Website Twitter Facebook Linkedin
3scale’s API management platform empowers API providers to easily package, distribute, manage and monetize APIs.
OneID
Crunchbase Website Twitter Facebook Linkedin
OneID is an identity and security platform for the IoT and web connected world, including devices, servers, applications, and humans.
Berbix
Crunchbase Website Twitter Facebook Linkedin
Berbix develops identity verification software that uses machine learning techniques to instantly spot fraud.
Lang API
Crunchbase Website Twitter Facebook Linkedin
LangAPI exists to help developers rapidly translate and localize their apps for users worldwide.
Hannah Systems
Crunchbase Website Twitter Facebook Linkedin
Partnering with cities to deliver the next generation of open and ethically managed traffic data.
VoiceLayer
Crunchbase Website Twitter Facebook Linkedin
Real-time Push-to-Talk PaaS Add realtime Push-to-Talk (PTT) to any app with our simple API/SDK! Push-to-Talk: Messages are streamed rea
Pepper
Crunchbase Website Twitter Facebook Linkedin
Pepper provides an API that helps health, food, insurance, and technology companies build better user experiences.
Telesocial
Crunchbase Website Twitter Facebook Linkedin
TeleSocial is an integrated voice and IP service that connects voice calls through social media.
Guidebox
Crunchbase Website Twitter Facebook Linkedin
Guidebox is the data layer that powers universal search and discovery for movies and TV across the OTT landscape.
Basilica
Crunchbase Website Twitter Facebook Linkedin
Basilica is an API that embeds high-dimensional data like images and text.
Bitbutter
Crunchbase Website Twitter Facebook Linkedin
Crypto-asset account aggregation API for fintechs and financial institutions.
RingCaptcha
Crunchbase Website Twitter Facebook Linkedin
RingCaptcha provides SMS and voice verification services, as well as SMS traffic analytics, monitoring and anti-fraud protection.
Dacast
Crunchbase Website Twitter Facebook Linkedin
Dacast offers API-based and easy-to-use streaming solutions to host, manage, monetize and deliver OTT video worldwide.
AssemblyAI
Crunchbase Website Twitter Facebook Linkedin
AssemblyAI is an applied artificial intelligence company that uses deep learning technology to develop practical products.