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Seed Open Source Companies

Explore 134 open source startups that raised seed funding. Access verified founder contact information and fundraising data.

Total Companies
134
Total Funding
$145.1M
Avg Funding
$5.8M
Cities
14

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Cupertino, United States
$35.0M
raised

Obot AI is developing an open-source Enterprise MCP Gateway to facilitate the rapid adoption of AI

Sep 2025
Seed

Founder Contacts

41,000+ verified contacts

San Francisco, United States
$500K
raised

MCP Use provides open-source developer tools and infrastructure for the model context protocol.

Sep 2025
Pre-Seed

Founder Contacts

41,000+ verified contacts

Montréal, Canada
$2.5M
raised

Uno Platform powers building cross-platform .NET applications in record time

Aug 2025
Seed

Founder Contacts

41,000+ verified contacts

Stockholm, Sweden
$10.0M
raised

Polar is a subscription network for open-source maintainers and backers.

Jun 2025
Seed

Founder Contacts

41,000+ verified contacts

San Francisco, United States
$3.6M
raised

Securing Terraform deployments

Jun 2025
Seed

Founder Contacts

41,000+ verified contacts

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41,000+ verified emails
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Tel Aviv-yafo, Israel
$6.1M
raised

Observability and testing for your LLM application

May 2025
Seed

Founder Contacts

41,000+ verified contacts

San Francisco, United States
$3.3M
raised

The open source auth infrastructure for B2B SaaS

May 2025
Seed

Founder Contacts

41,000+ verified contacts

Bois-colombes, France
$478K
raised

Empowering companies to take control of their carbon emissions with our API-first Carbon Management Platform

May 2025
Pre-Seed

Founder Contacts

41,000+ verified contacts

San Francisco, United States
$4.0M
raised

Solving the data context problem

Apr 2025
Pre-Seed

Founder Contacts

41,000+ verified contacts

Tampa, United States
$880K
raised

Tangle ERP is a unique low-code / AI-assisted application for Manufacturers, offering full customization, migration and rapid delivery

Apr 2025
Seed

Founder Contacts

41,000+ verified contacts

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41,000+ verified emails
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San Francisco, United States
$17.0M
raised

Make Websites Accessible for Agents

Mar 2025
Seed

Founder Contacts

41,000+ verified contacts

Stockholm, Sweden
$17.0M
raised

Rerun builds open source visualization infrastructure for computer vision and robotics.

Mar 2025
Seed

Founder Contacts

41,000+ verified contacts

New York, United States
$7.6M
raised

Pluralis Research operates as an AI start-up that uses decentralized training to create open-source AI.

Mar 2025
Seed

Founder Contacts

41,000+ verified contacts

Tokyo, Japan
$4.0M
raised

NodeX is an IoT modern monitoring service provider that specializes in open-source and scalable data orchestration platforms.

Mar 2025
Seed

Founder Contacts

41,000+ verified contacts

San Francisco, United States
$500K
raised

Superglue is an open-source tool that empowers users to effortlessly transform their data, unlocking new possibilities and insights.

Mar 2025
Pre-Seed

Founder Contacts

41,000+ verified contacts

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41,000+ verified emails
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San Francisco, United States
$500K
raised

Subtrace empowers developers to effortlessly monitor all production requests with just one command

Mar 2025
Pre-Seed

Founder Contacts

41,000+ verified contacts

San Francisco, United States
$4.2M
raised

Lingo.dev automates localization by generating instant translations and creating pull requests with translations for UI code changes.

Feb 2025
Seed

Founder Contacts

41,000+ verified contacts

Tel Aviv-yafo, Israel
$13.5M
raised

The GenAI platform that streamlines business onboarding, underwriting, and monitoringfast, secure, and compliant.

Jan 2025
Seed

Founder Contacts

41,000+ verified contacts

San Francisco, United States
$5.0M
raised

Twenty builds the modern salesforce, powered by the open source community.

Nov 2024
Seed

Founder Contacts

41,000+ verified contacts

San Francisco, United States
$5.0M
raised

Open-source CRM without compromise

Nov 2024
Seed

Founder Contacts

41,000+ verified contacts

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41,000+ verified emails
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Pittsburgh, United States
$500K
raised

Ionworks is a Software Development firm offering simulation software used by battery and automotive companies.

Sep 2024
Pre-Seed

Founder Contacts

41,000+ verified contacts

Vienna, Austria
$500K
raised

Glasskube is an open source package manager that distributes software to private infrastructure, cloud environments, and on-premises.

Aug 2024
Pre-Seed

Founder Contacts

41,000+ verified contacts

London, United Kingdom
$1.3M
raised

The only messaging platform without any user IDs

Aug 2024
Pre-Seed

Founder Contacts

41,000+ verified contacts

Austin, United States
$2.0M
raised

Innovation at the cutting edge of IT security

Jul 2024
Seed

Founder Contacts

41,000+ verified contacts

Charlotte, United States
$55K
raised

Leantime is an open source project management system for non-project managers using behavioral science and AI to make work engaging.

Jun 2024
Pre-Seed

Founder Contacts

41,000+ verified contacts

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