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Seed Companies in California

Explore 6,098 seed startups based in California, United States. Access verified founder contact information and fundraising data.

Total Companies
6,098
Total Funding
$101.1M
Avg Funding
$4.0M
Industries
12

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Biotechnology
$10.0M
raised

Rybodyn is a biotechnology research company that develops therapeutics to train the immune system to detect and eradicate cancer internally.

Jul 2026
Seed

Founder Contacts

30,000+ verified contacts

$4.5M
raised

Cast Insights is an AI-powered platform that turns global spoken content—TV, radio, podcasts, livestreams—into structured.

Jul 2026
Pre-Seed

Founder Contacts

30,000+ verified contacts

Artificial Intelligence (AI)
$500K
raised

Squid offers a workspace for planning, modeling, and testing power grid networks with tools for network analysis and simulation.

Jul 2026
Seed

Founder Contacts

30,000+ verified contacts

Chemical
$11.0M
raised

Estes Energy is a California-based startup developing advanced, U.S.-made, chemistry-agnostic battery packs for mobility and industry.

Jul 2025
Seed

Founder Contacts

30,000+ verified contacts

Artificial Intelligence (AI)
$5.1M
raised

Olto crafts personalized live demos by overlaying AI-generated, prospect-relevant data on top of your existing production apps.

Jul 2025
Pre-Seed

Founder Contacts

30,000+ verified contacts

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Artificial Intelligence (AI)
$5.5M
raised

Network3 is a firm that develops web3 AI infrastructure.

Jul 2024
Seed

Founder Contacts

30,000+ verified contacts

Artificial Intelligence (AI)
$2.5M
raised

Transform Data Into Professional Reports Automatically

Jul 2024
Seed

Founder Contacts

30,000+ verified contacts

Artificial Intelligence (AI)
$5.0M
raised

powder is building generative AI agents that automate laborious tasks to save time.

Jul 2024
Seed

Founder Contacts

30,000+ verified contacts

Advertising
$6.0M
raised

Adway is the only mobility based advertising and data platform that uses projection to turn any car-body into a media display.

Jul 2021
Seed

Founder Contacts

30,000+ verified contacts

Apps
$1.0M
raised

SST is an open-source framework for building full-stack applications.

Jul 2021
Seed

Founder Contacts

30,000+ verified contacts

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30,000+ verified emails
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Bitcoin

Yours is a blockchain-based social network where users can earn bitcoin.

Jul 2021
Pre-Seed

Founder Contacts

30,000+ verified contacts

Health Care
$250K
raised

SinewUS is a medical device manufacturing company that develops accessible, instrumented loading devices for tendon and ligament health.

Jul 2026
Seed

Founder Contacts

30,000+ verified contacts

Aerospace
$330K
raised

ORBES is building the maintenance backbone for space.

Jul 2026
Pre-Seed

Founder Contacts

30,000+ verified contacts

Digital Media
$184K
raised

Cross Bible is a SaaS company that offers easy-to-use, web-based Bible study software for users of all levels.

Jul 2025
Pre-Seed

Founder Contacts

30,000+ verified contacts

Artificial Intelligence (AI)
$2.0M
raised

Building test time cognition architectures for agentic intelligence.

Jul 2024
Seed

Founder Contacts

30,000+ verified contacts

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30,000+ verified emails
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Artificial Intelligence (AI)
$8.0M
raised

Cheiron is working on automating complex things in pharma industry with the help of AI.

Jul 2026
Seed

Founder Contacts

30,000+ verified contacts

Artificial Intelligence (AI)
$4.1M
raised

StrongestLayer is an AI-based cybersecurity platform mainly for email security and human risk mitigation.

Jul 2026
Seed

Founder Contacts

30,000+ verified contacts

Artificial Intelligence (AI)
$5.5M
raised

Klaimee is a startup that develops insurance and certification infrastructure for autonomous AI agents.

Jul 2026
Seed

Founder Contacts

30,000+ verified contacts

$15.0M
raised

Poseidon is a full-stack decentralized data layer built for AI training workflows.

Jul 2025
Seed

Founder Contacts

30,000+ verified contacts

Analytics
$4.6M
raised

Real-time monetization infrastructure for AI.

Jul 2024
Seed

Founder Contacts

30,000+ verified contacts

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30,000+ verified emails
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Advertising
$300K
raised

Lolly.com is an advertising company that offers a platform for creator marketing, matching brands with creators to drive performance.

Jul 2024
Pre-Seed

Founder Contacts

30,000+ verified contacts

$1.1M
raised

Address Insite is a technology company.

Jul 2024
Seed

Founder Contacts

30,000+ verified contacts

Artificial Intelligence (AI)
$4.0M
raised

Noded AI helps users prepare for customer meetings by organizing notes and past interactions.

Jul 2024
Seed

Founder Contacts

30,000+ verified contacts

Blockchain
$4.4M
raised

Cardinal is an NFT infrastructure protocol facilitator that offers leasing, staking, and ticketing to increase the utility of NFTs.

Jul 2022
Seed

Founder Contacts

30,000+ verified contacts

Cryptocurrency
$250K
raised

Tradeshare develops a decentralized protocol dApp for credit and the lending process.

Jul 2022
Seed

Founder Contacts

30,000+ verified contacts

Showing 751 to 775 of 6,098 companies

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