RunKit
What they do:
RunKit is the best tool for prototyping server-side JavaScript. RunKit notebooks remove the friction of trying new ideas. With one click, you'll have a…
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HQ: San Francisco, CA, United States
This list has 6,379 startups and was last updated on Oct 15, 2026. 1,190 of them are hiring right now. Biggest hubs: San Francisco (3,173), New York (858), and Los Angeles (197). Largest teams: DoorDash, Stripe, and Airbnb. Latest round: Lungpacer Medical raised $7.83M (Oct 14, 2026).
What they do:
RunKit is the best tool for prototyping server-side JavaScript. RunKit notebooks remove the friction of trying new ideas. With one click, you'll have a…
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HQ: San Francisco, CA, United States

What they do:
The Universal API
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HQ: San Francisco, CA, United States

What they do:
Penny makes keeping track of your finances as easy as having a…
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HQ: San Francisco, CA, United States

What they do:
AI notetaker for phone calls
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HQ: San Francisco, CA, United States
What they do:
We save travelers hours by meeting them at their arrival gate,…
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HQ: Las Vegas, NV, United States

What they do:
The backend for Augmented Reality.
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HQ: San Francisco, CA, United States

What they do:
Automated meeting scheduling for teams
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HQ: San Francisco, CA, United States

What they do:
Natural language processing APIs for developers.
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HQ: San Francisco, CA, United States

What they do:
We help commercial insurance brokers structure complicated…
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HQ: San Francisco, CA, United States

What they do:
The simplest way for couples to manage money, together
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HQ: New York, NY, United States

What they do:
Coderwall is a collaborative learning platform for software developers to improve their programming knowledge. It is based in San Francisco, California.
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HQ: San Francisco, CA, United States

What they do:
Dental Insurance API
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HQ: San Francisco, CA, United States
What they do:
Advancing surgical precision through safe electrical stimulation.
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HQ: Houston, TX, United States

What they do:
GraphQL API to connect all of the internet's APIs. Join us at Netlify!
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HQ: San Francisco, CA, United States

What they do:
Predictive maintenance models for trains and heavy industry
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HQ: San Francisco, CA, United States

What they do:
SDK for scanning and verifying credit cards and photo IDs in mobile…
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HQ: San Francisco, CA, United States
What they do:
Luma (formerly Midnox) allows you to record and share beautiful HD videos with real-time video stabilization, filters and zoom. Change filters and…
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HQ: San Francisco, CA, United States

What they do:
A third-party manager, built for speed.
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HQ: San Francisco, CA, United States

What they do:
We help warehouses schedule trucks
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HQ: San Francisco, CA, United States

What they do:
The better way to run single cell genomics
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HQ: San Francisco, CA, United States

What they do:
Affordable mental self-care for all. Acquired by Headspace Health.
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HQ: San Francisco, CA, United States

What they do:
Enables Linux containers to act as super fast & efficient VMs
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HQ: San Francisco, CA, United States

What they do:
The all-in-one notebook for creatives to brainstorm, write, and plan…
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HQ: NY, United States

What they do:
The network where sales teams connect to share customer introductions.
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HQ: New York, NY, United States

What they do:
AI-Powered Assistant for Procurement and Strategic Sourcing
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HQ: San Francisco, CA, United States

What they do:
Dynamic access controls for all data and databases
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HQ: New York, NY, United States

What they do:
Cord Blood Banking Reimagined
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HQ: New York, NY, United States

What they do:
A new way to create landing pages that is video-native.
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HQ: New York, NY, United States

What they do:
Break down AI and cloud costs by feature and customer
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HQ: San Francisco, CA, United States

What they do:
AI RCM assistant that handles any insurance task on payer portals for…
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HQ: New York, NY, United States

What they do:
Cloud-native stream processing
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HQ: San Francisco, CA, United States

What they do:
Open source tools & services for reliable AI Agents & AI Applications
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HQ: San Francisco, CA, United States

What they do:
Sales Agents with 100+ data sources to close more deals
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HQ: San Francisco, CA, United States

What they do:
Automated revenue cycle management, starting with dentists
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HQ: San Francisco, CA, United States

What they do:
Dead simple LLM testing and iteration
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HQ: Philadelphia, PA, United States

What they do:
Your junior AI product manager
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HQ: San Francisco, CA, United States