# Open Source Endowment

**Source:** https://www.startuphub.ai/startups/open-source-endowment
**Profile type:** Startup

> A nonprofit endowment aiming to permanently solve the funding problem for open-source software maintainers.

## About

The Open Source Endowment is a 501(c)(3) nonprofit organization founded by VC investor Konstantin Vinogradov and backed by prominent open-source programmers. Its mission is to provide sustainable, long-term funding for critical open-source projects and their maintainers, addressing the perennial issue of underfunded and burned-out developers. It operates by building a large endowment, investing its assets, and distributing a fraction of the income to projects based on criteria like user base and reliance by other software, prioritizing those not already well-supported.

## Key facts

- **Slug:** open-source-endowment
- **Website:** https://endowment.dev
- **Location:** San Francisco, United States
- **Founded:** 2026-02-26 00:00:00
- **Operating status:** Active
- **Total funding:** $750K
- **Sectors / tags:** Open Source, Non-profit, Technology, Software Development, Philanthropy, Fintech
- **Social:**
  - LinkedIn: https://www.linkedin.com/company/open-source-endowment/
  - Twitter: https://x.com/OSEndowment
  - GitHub: https://github.com/opensourceendowment

## Frequently asked

### What does Open Source Endowment do?

The Open Source Endowment is a 501(c)(3) nonprofit organization founded by VC investor Konstantin Vinogradov and backed by prominent open-source programmers. Its mission is to provide sustainable, long-term funding for critical open-source projects and their maintainers, addressing the perennial issue of underfunded and burned-out developers. It operates by building a large endowment, investing its assets, and distributing a fraction of the income to projects based on criteria like user base and…

### What is Open Source Endowment's revenue?

StartupHub estimates Open Source Endowment's annual revenue at $145K (range $87K to $294K, 31% confidence), based on comparable companies in the sector.

### What is Open Source Endowment's valuation?

StartupHub estimates Open Source Endowment's effective valuation at $18.6M (range $10.8M to $24.3M, 58% confidence), based on comparable companies in the sector.

### How much funding has Open Source Endowment raised?

Open Source Endowment has raised a total of $750K in funding.

### Where is Open Source Endowment headquartered?

Open Source Endowment is headquartered in San Francisco, United States.

### When was Open Source Endowment founded?

Open Source Endowment was founded in 2026.

### What industry does Open Source Endowment operate in?

Open Source Endowment operates in Open Source, Non-profit, Technology, Software Development, Philanthropy, Fintech.

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