Oss Capital, LLC
Emerging managerSEC exempt reporting adviser (venture capital exemption).
- Website
- https://oss.capital/
- HQ
- CA
OSS Capital is an early-stage venture firm that backs founders of leading commercial open source (COSS) startups around the world. Its portfolio includes ResearchHub, Manifold Labs, Extropic, Liquid AI, Plane, AppFlowy, Cal.com, W4 Games, and Parallel. The team includes founder Joseph Jacks, CFO Chelsea Wei, and portfolio partners Scott Williamson, Heather Meeker, and Justin Hoffman.
01 · Says / Does
| Tag | Says | Does | Historically (to 2020) |
|---|---|---|---|
| Stages | Not stated | Not enough dated deals | None |
| Sectors | Not stated | Not enough dated deals | None |
| Regions | Global | Not enough dated deals | None |
Says: what the firm's funds state. Does: from 0 dated deals in the last 24 months.
Historical focus (through 2020), derived from historical deal data.
| Year | Deals | Top sectors |
|---|---|---|
| 2019 | 1 | Hardware, Media |
02 · Fund history
| Fund | Year | Size | Status |
|---|---|---|---|
| OSS Capital IV, L.P. OSS Capital is an early-stage venture firm backing commercial open source (COSS) startup founders on a global basis. It aims to help COSS companies scale with greater capital efficiency. Inferred from the firm's website | approx. 2025 | $52M (Form D) | Raising |
| Plane OSS LLC OSS Capital is an early-stage venture firm backing commercial open source (COSS) startup founders on a global basis. It aims to help COSS companies scale with greater capital efficiency. Inferred from the firm's website | 2024 | $2.73M to $58M (Form D) | Open, writing first checks |
| Liquid OSS LLC OSS Capital is an early-stage venture firm backing commercial open source (COSS) startup founders on a global basis. It aims to help COSS companies scale with greater capital efficiency. Inferred from the firm's website | 2023 | $6.9M to $6.95M (Form D and SEC adviser filing) | Open, writing first checks |
| OSS Capital III, L.P. OSS Capital is an early-stage venture firm backing commercial open source (COSS) startup founders on a global basis. It aims to help COSS companies scale with greater capital efficiency. Inferred from the firm's website | approx. 2023 | $75M (Form D) | Open, writing first checks |
| OSS Capital II, L.P. OSS Capital is an early-stage venture firm backing commercial open source (COSS) startup founders on a global basis. It aims to help COSS companies scale with greater capital efficiency. Inferred from the firm's website | approx. 2022 | $75M to $75.76M (Form D and SEC adviser filing) | Late investment period |
03 · People across funds
- Joseph Jacks, Founder
OSS Capital IV, L.P. (Named on Form D); Plane OSS LLC (Named on Form D); Liquid OSS LLC (Named on Form D); OSS Capital III, L.P. (Named on Form D); OSS Capital II, L.P. (Named on Form D)
- Chelsea Wei, CFO
OSS Capital IV, L.P. (Team); Plane OSS LLC (Team); Liquid OSS LLC (Team); OSS Capital III, L.P. (Team); OSS Capital II, L.P. (Team)
- Heather Meeker, Founding Portfolio Partner
OSS Capital IV, L.P. (Team); Plane OSS LLC (Team); Liquid OSS LLC (Team); OSS Capital III, L.P. (Team); OSS Capital II, L.P. (Team)
- Justin Hoffman, Portfolio Partner: GTM/Sales
OSS Capital IV, L.P. (Team); Plane OSS LLC (Team); Liquid OSS LLC (Team); OSS Capital III, L.P. (Team); OSS Capital II, L.P. (Team)
- Scott Williamson, Portfolio Partner: Product
OSS Capital IV, L.P. (Team); Plane OSS LLC (Team); Liquid OSS LLC (Team); OSS Capital III, L.P. (Team); OSS Capital II, L.P. (Team)
- Kevin Wang, CEO, FOSSA Inc.
On the team page, not linked to a fund
04 · Recent deals
No dated deals found yet.
05 · Latest from the firm
No news from the firm's website yet.
06 · Sources
- https://oss.capital/
- https://oss.capital/contact-us/
- https://oss.capital/news/
- https://oss.capital/portfolio
- https://oss.capital/team
- https://oss.capital/portfolio/cal-com/
Fund dates and sizes are from SEC Form D filings.
Last verified: Oct 28, 2026