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