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Seed Open Source Companies

Explore 127 open source startups that raised seed funding. Access verified founder contact information and fundraising data.

Total Companies
127
Total Funding
$39.0M
Avg Funding
$1.6M
Cities
14

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San Francisco, United States
$500K
raised

Epicenter is an open-source, local-first ecosystem of apps that share a single memory stored in plain text and SQLite on the device.

Sep 2025
Pre-Seed

Founder Contacts

30,000+ verified contacts

Dover, United States

An open-source omnichannel customer engagement suite

Sep 2021
Seed

Founder Contacts

30,000+ verified contacts

San Mateo, United States
$500K
raised

HyperDX is a SAAS company that offers simple workflows that assit engineers in resolving production bugs quicker.

Sep 2022
Pre-Seed

Founder Contacts

30,000+ verified contacts

Singapore, Singapore
$1.0M
raised

MEMODB is a tech company that provides AI memory technology infrastructure by engineering open-source tools like Memobase.

Sep 2025
Seed

Founder Contacts

30,000+ verified contacts

San Francisco, United States

Unsloth makes reinforcement learning and finetuning easier and more efficient.

Sep 2024
Seed

Founder Contacts

30,000+ verified contacts

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30,000+ verified emails
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Biarritz, France
$7.3M
raised

Ternoa offers Blockchain technology to transfer data securely, anonymously, and without alienation nor intermediaries.

Sep 2022
Seed

Founder Contacts

30,000+ verified contacts

Clifton, United Kingdom
$62K
raised

February platform provides create, design, manage and develop apps.

Sep 2023
Pre-Seed

Founder Contacts

30,000+ verified contacts

Singapore, Singapore
$6.0M
raised

Databend - Modern alternative to Snowflake. Cost-effective and simple for massive-scale insights, powered by Rust.

Aug 2021
Seed

Founder Contacts

30,000+ verified contacts

Miami, United States
$750K
raised

ZKMPC for trade finance and supply chain

Jul 2021
Pre-Seed

Founder Contacts

30,000+ verified contacts

San Francisco, United States
$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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New York, United States
$1.0M
raised

Primal operates as a social media company that focus on building an open protocols like Nostr and Bitcoin.

Jul 2023
Seed

Founder Contacts

30,000+ verified contacts

Copenhagen, Denmark
$8.0M
raised

Building blocks for digital commerce.

Jul 2022
Seed

Founder Contacts

30,000+ verified contacts

San Francisco, United States
$3.0M
raised

Maestro is an automated testing platform that helps developers create and run end-to-end tests for mobile and web applications.

Jul 2021
Seed

Founder Contacts

30,000+ verified contacts

San Francisco, United States

Building internet infrastructure for web agents

Jul 2025
Pre-Seed

Founder Contacts

30,000+ verified contacts

New York, United States

OpenReplay is an open-source, self-hostable, session replay and product analytics platform.

Jun 2022
Seed

Founder Contacts

30,000+ verified contacts

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30,000+ verified emails
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Boston, United States

Make beautiful websites regardless of your design experience - Open Source React UI Library

Jun 2024
Seed

Founder Contacts

30,000+ verified contacts

San Francisco, United States
$500K
raised

DioxusLabs An open source project focused to improving Rust UI.

Jun 2023
Pre-Seed

Founder Contacts

30,000+ verified contacts

Boston, United States

OpenProse is an open-source infrastructure for long-running AI work: a declarative language plus the Reactor harness/runtime for workflows.

Jun 2026
Pre-Seed

Founder Contacts

30,000+ verified contacts

San Francisco, United States

smol machines provides tools to build, run, and package portable hardware-isolated Linux virtual machines for software development.

Jun 2026
Pre-Seed

Founder Contacts

30,000+ verified contacts

San Francisco, United States
$6.7M
raised

Strix is an open-source AI security platform that uses autonomous agents to continuously pentest applications, APIs, and codebases.

Jun 2026
Seed

Founder Contacts

30,000+ verified contacts

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30,000+ verified emails
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San Francisco, United States
$250K
raised

Omnigres is a developer of an integrated data-computed cloud on top of an open-source Postgres platform.

May 2026
Seed

Founder Contacts

30,000+ verified contacts

Wilmington, United States
$750K
raised

Networked Artifacts is a technology manufacturing company that offers a portable and playful air quality measuring device.

May 2025
Seed

Founder Contacts

30,000+ verified contacts

Ulster Park, United States
$1.0M
raised

MarsX is an AI-powered low code platform with micro apps.

May 2022
Pre-Seed

Founder Contacts

30,000+ verified contacts

Newcastle Upon Tyne, United Kingdom
$656K
raised

Xbim provides digital solution services.

Apr 2022
Seed

Founder Contacts

30,000+ verified contacts

Mountain View, United States

Firezone is an open-source security platform to manage secure remote access for teams.

Apr 2022
Seed

Founder Contacts

30,000+ verified contacts

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