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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
$56.6M
Avg Funding
$2.3M
Cities
11

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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

41,000+ verified contacts

Dover, United States

An open-source omnichannel customer engagement suite

Sep 2021
Seed

Founder Contacts

41,000+ 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

41,000+ 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

41,000+ verified contacts

San Francisco, United States

Unsloth makes reinforcement learning and finetuning easier and more efficient.

Sep 2024
Seed

Founder Contacts

41,000+ verified contacts

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41,000+ verified emails
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San Francisco, United States
$2.6M
raised

Neander provides a multiplayer IDE for business teams to shape products, make technical decisions, and build software together.

Sep 2026
Seed

Founder Contacts

41,000+ verified contacts

Miami, United States
$4.5M
raised

Flamingo provides an open platform that uses AI automation and open source tools to manage and streamline IT operations.

Sep 2026
Seed

Founder Contacts

41,000+ verified contacts

Biarritz, France
$7.3M
raised

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

Sep 2022
Seed

Founder Contacts

41,000+ verified contacts

San Francisco, United States
$10.0M
raised

Robocurve builds open-source evaluation tools and benchmarks for measuring real-world capabilities of AI and robots.

Sep 2026
Seed

Founder Contacts

41,000+ verified contacts

Clifton, United Kingdom
$62K
raised

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

Sep 2023
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

OneTriangle optimizes LLM inference speed and cost by transferring the KV cache from smaller prefill models to larger decode models.

Sep 2026
Pre-Seed

Founder Contacts

41,000+ verified contacts

San Francisco, United States
$500K
raised

OneTriangle optimizes LLM inference speed and cost by transferring the KV cache from smaller prefill models to larger decode models.

Sep 2026
Pre-Seed

Founder Contacts

41,000+ verified contacts

San Francisco, United States
$500K
raised

Akon Labs develops GitNexus, a code intelligence engine for software engineering agents.

Sep 2026
Pre-Seed

Founder Contacts

41,000+ 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

41,000+ verified contacts

Miami, United States
$750K
raised

ZKMPC for trade finance and supply chain

Jul 2021
Pre-Seed

Founder Contacts

41,000+ verified contacts

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41,000+ verified emails
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Milan, Italy
$3.4M
raised

Beelzebub develops AI-native cybersecurity software for threat detection, deception, and automated security operations.

Jul 2026
Seed

Founder Contacts

41,000+ verified contacts

New York, United States
$4.9M
raised

Schematic Research is a technology driven company that offers a platform generating mathematical code with AI.

Jul 2026
Seed

Founder Contacts

41,000+ 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

41,000+ verified contacts

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

41,000+ verified contacts

Copenhagen, Denmark
$8.0M
raised

Building blocks for digital commerce.

Jul 2022
Seed

Founder Contacts

41,000+ verified contacts

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41,000+ verified emails
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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

41,000+ verified contacts

San Francisco, United States

Building internet infrastructure for web agents

Jul 2025
Pre-Seed

Founder Contacts

41,000+ verified contacts

New York, United States

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

Jun 2022
Seed

Founder Contacts

41,000+ verified contacts

Boston, United States

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

Jun 2024
Seed

Founder Contacts

41,000+ verified contacts

San Francisco, United States
$500K
raised

DioxusLabs An open source project focused to improving Rust UI.

Jun 2023
Pre-Seed

Founder Contacts

41,000+ verified contacts

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