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About
Joseph Jacks, who coined the COSS category, focuses exclusively on startups with an essential open-source core and has LPs composed of founders from WordPress, Red Hat, MongoDB and GitHub.
Contact· self-published, not guessed
Invests in
AI & Machine LearningCloud ComputingData & InfrastructureDeveloper ToolsEnterprise SoftwareSaaS
Investments
Board seats
Per SEC Form D filings.
Colleagues at OSS Capital
Frequently asked questions
- Who is Joseph Jacks?
- Joseph Jacks, who coined the COSS category, focuses exclusively on startups with an essential open-source core and has LPs composed of founders from WordPress, Red Hat, MongoDB and GitHub.
- Where does Joseph Jacks work?
- Joseph Jacks is Founder at OSS Capital.
- What does Joseph Jacks invest in?
- Joseph Jacks invests in AI & Machine Learning, Cloud Computing, Data & Infrastructure, Developer Tools, Enterprise Software, SaaS.
- What check size does Joseph Jacks write?
- Joseph Jacks typically writes checks of $50K – $5M.
- What boards does Joseph Jacks sit on?
- Joseph Jacks holds tracked board seats at Liquid AI.
Founder mafias
Liquid AI mafia6
Also came through, then founded or led a company.
OSS Capital mafia3
Also came through, then founded or led a company.
About this profile. Compiled from public sources — OSS Capital's own website and public professional profiles — and summarised by Fundraising Fox; every fact is kept with where it came from. Spotted an error, or would rather not be listed? Email privacy@fundraisingfox.com · How we build profiles · Your rights









