
Calltree
What they do:
Enterprise-grade AI support reps for call centers
Quick facts:
HQ: San Francisco, CA, United States
This list has 8,236 startups and was last updated on Oct 15, 2026. 1,491 of them are hiring right now. Biggest hubs: San Francisco (3,173), New York (858), and London (219). Largest teams: Breadfast, DoorDash, and Stripe. Latest round: Scimplify raised $25M (Oct 15, 2026).

What they do:
Enterprise-grade AI support reps for call centers
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HQ: San Francisco, CA, United States

What they do:
24/7 Global Stock Exchange
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HQ: London, United Kingdom

What they do:
Infrastructure to power every customer interaction.
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HQ: San Francisco, CA, United States

What they do:
Voice AI for Enterprises
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HQ: Istanbul, Turkey

What they do:
Takeoffs, design, and field work. Powered by AI.
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HQ: San Francisco, CA, United States

What they do:
Ploy turns your website into your company's growth engine.
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HQ: San Francisco, CA, United States

What they do:
Security builds trust. Strengthen both, all on one platform.
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HQ: San Francisco, CA, United States

What they do:
Medical device that provides a more effective, less invasive…
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HQ: San Francisco, CA, United States

What they do:
We make vanpool simple.
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HQ: Los Angeles, CA, United States

What they do:
Blood testing device for early diagnosis of cancer and treatment…
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What they do:
Decarbonized heat and power cheaper than fossil fuels
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What they do:
Win money betting on yourself playing AAA video games
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HQ: New York, NY, United States

What they do:
Fermentation-derived natural products to solve health problems
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HQ: San Diego, CA, United States
What they do:
Automated receptionist that answers missed calls for local businesses
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HQ: San Juan, Puerto Rico

What they do:
Fulfillment platform to build Southeast Asia e-commerce operations
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HQ: Kuala Lumpur, Malaysia

What they do:
Non-profit building open-source voting machines for US elections.
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HQ: Boston, MA, United States

What they do:
An effective home-use fertility treatment for natural conception
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HQ: Singapore

What they do:
Jenfi provides revenue-based financing for digital businesses in Asia
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HQ: Singapore

What they do:
All your tasks and calendars into an AI-powered productivity app
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HQ: Spain

What they do:
Better Business on WhatsApp
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What they do:
Engineering intelligence for AI transformation
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HQ: Bucharest, Romania

What they do:
Empowering local businesses to sell online.
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What they do:
Helping Indians make better financial decisions.
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What they do:
Automate finance operations with Python and AI
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What they do:
Online Coding School for Kids 8-16
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HQ: Singapore

What they do:
Modern Checkout Platform for D2C brands in Southeast Asia
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HQ: Singapore

What they do:
Building a full-stack auto insurer for the underserved in LatAm
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HQ: Mexico City, Mexico

What they do:
Carbon capture equipment for ships
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HQ: London, United Kingdom

What they do:
The next-gen lending platform for the banking system in LATAM.
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HQ: Buenos Aires, Argentina

What they do:
LLM for Legal in Brazil
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What they do:
AI-native scheduling and workforce management platform for healthcare
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What they do:
B2B marketplace for Auto Dealers in Africa
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What they do:
Marketplace for Rare Coins & Precious Metals
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HQ: Los Angeles, CA, United States

What they do:
Operating system for travel businesses in Africa with embedded finance
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What they do:
AI Agents for high-stakes work.
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HQ: San Francisco, CA, United States

What they do:
Autonomous Accounting Software
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