Joseph Jacks

Founder and General Partner, OSS Capital L.P.
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.
How to contact Joseph Jacks
Stages their fund invests in
N/A
Sectors their fund invests in
N/A
Avg Check
$50K - $5M
N/A
Does their fund Lead?
No
N/A
Geos their fund invests in
USA
Joseph Jacks
Stages their fund invests in
N/A
Sectors their fund invests in
Devtools
AI
SaaS
Data
Enterprise
N/A
Avg Check
$50K - $5M
N/A
Leads?
No
N/A
Close X
Industries
Thank you! Your submission has been received!
Oops! Something went wrong while submitting the form.
Info out of date? Let us know

About Joseph Jacks

Joseph Jacks positions himself as a COSS missionary who coined and popularized the Commercial Open Source Software category, arguing these companies are structurally different from SaaS and deserve their own metrics and playbooks rather than generic approaches. He runs OSS Capital as a hyper-focused, category-only firm that exclusively invests in COSS startups where the company would not exist without an open source core, and has built the LP base as a curated open source brain trust of iconic founders from companies like WordPress, Red Hat, MongoDB, and GitHub.

Joseph Jacks's Interests

What they've been talking about across their social media accounts
  • A strong conviction in commercial open source software as a superior model for high-growth startups. He frequently validates this thesis by pointing to the rapid expansion of companies within his own firm's portfolio, citing specific examples like Hoppscotch to illustrate how focusing on open developer tools leads to success.
  • Comparisons between biological intelligence and modern computing, often arguing that the human brain is vastly more efficient than current artificial intelligence hardware. He breaks down the math of processing power per watt to show that organic structures, such as cellular microtubules, still outperform the largest silicon superclusters by a significant margin.
  • Interest in foundational hardware physics and moving beyond traditional computing architectures. He critiques current tech giants for having financial incentives to ignore fundamental inefficiencies in how computers process data, suggesting that true innovation requires rethinking the physical substrate of computing rather than just making chips faster.
  • Deep engagement with Eastern philosophy and metaphysics as a framework for understanding consciousness and intelligence. He regularly references ancient Sanskrit texts and the Upanishads, drawing parallels between these spiritual concepts and the scientific pursuit of understanding the mind and the universe.
  • Commitment to decentralized networks and incentive structures that challenge centralized ownership. He demonstrates this through his long-term support of protocols like Bittensor, explaining how he holds these assets through volatility because he believes in systems that separate the symbolic representation of understanding from traditional ownership models.

About their Fund

OSS Capital L.P.

Sectors
Devtools, AI, SaaS, Data, Enterprise
Rounds
Seed - Series B+
Avg Check Size
$50K - $5M

OSS Capital is the first institutional VC fund exclusively dedicated to commercial open-source software (COSS) startups globally, founded by Joseph "JJ" Jacks who came directly from the open-source ecosystem and helped create and formalize the COSS category itself. The fund features open-source licensing lawyer Heather Meeker as a General Partner to provide in-house legal expertise on licensing and governance, while operating as both an investor and ecosystem hub through stewarding the COSS Community and Open Core Summit.

Other partners at the fund
No items found.

Notable Fund
Investments

No items found.

Sheets they're Fund is in

Is this information out of date? Let us know

Popular Investors

investor name
Active in
Rounds
Avg. Check
Links
Deeptech / Hardware
Robotics
Biotech
+
12
View more in profile...
Unknown
Pre-Seed - Seed
Unknown
$400K - $2M
Unknown
Defense
Deeptech / Hardware
Energy
+
7
View more in profile...
Unknown
Pre-Seed - Series A
Unknown
$100K - $5M
Unknown
Defense
Deeptech / Hardware
Energy
+
7
View more in profile...
Unknown
Pre-Seed - Series A
Unknown
$100K - $5M
Unknown
Biotech
Health
Deeptech / Hardware
+
2
View more in profile...
Unknown
Pre-Seed - Seed
Unknown
$250K - $2M
Unknown
Biotech
Health
Climate
+
4
View more in profile...
Unknown
Seed - Series B+
Unknown
$1M - $3M
Unknown
Climate
Deeptech / Hardware
Materials
+
4
View more in profile...
Unknown
Pre-Seed - Seed
Unknown
$400K - $1.5M
Unknown
Deeptech / Hardware
Robotics
Biotech
+
7
View more in profile...
Unknown
Pre-Seed - Seed
Unknown
$400K - $2M
Unknown
Deeptech / Hardware
Robotics
Biotech
+
2
View more in profile...
Unknown
Pre-Seed - Seed
Unknown
~$750K
Unknown
Fintech
Deeptech / Hardware
Devtools
+
2
View more in profile...
Unknown
Pre-Seed - Series A
Unknown
$250K-$1M
Unknown
AI
Biotech
Robotics
+
2
View more in profile...
Unknown
Pre-Seed - Seed
Unknown
$100K - $500K
Unknown
Or automatically find your investor matches
Upload your pitch deck to get your best investor matches in minutes.
Reveal the very best VCs to pitch for your startup
Get matching investors' email addresses
No ads. No catch. Free from VC Sheet.
Must be a valid email  to receive results
Upload and Submit Deck (50MB Max)
Thank you! Your submission has been received!
Oops! Something went wrong while submitting the form.
Success. Check your email in 5 minutes.
Browse Sheets
Sheet Type
Thank you! Your submission has been received!
Oops! Something went wrong while submitting the form.

Browse
Sheets

Sheets are curated lists of funds and investors for various sectors, stages and geographies.

Sector-focused sheets

Stages-focused sheets

Geography-focused sheets

Misc sheets

No results match these filters...