Theo Browne
About Theo Browne
Theo Browne is the founder and CEO of Ping Labs and the founder of T3 Chat. He also created the T3 Stack, and he is known online as Theo or t3dotgg. He has worked as a software engineer at Twitch. Crunchbase also lists him as a lead developer and founding member at Turntable LIVE.
Ping Labs joined Y Combinator's Winter 2022 batch. Its first product, Ping.gg, helped livestreamers collaborate through broadcasting software such as OBS. Other products tied to his work include UploadThing, a developer-focused file upload tool, and T3 Chat, a chat app built around his views on AI and user experience.
He also runs a YouTube channel for developers. Browne has described AI as changing what small software teams can build, and his investing follows that interest in developer tools. Crunchbase lists 0 companies founded under his personal profile, so treat the founder details above as coming from conference and press bios.
Crunchbase lists 16 investments for Browne, with 0 lead investments and 0 exits. The Crunchbase entries show no lead investor, which fits a participant role in rounds led by others. Round sizes and dates are mostly hidden on the public page.
The rounds Crunchbase attributes to him cover pre-seed (Supermemory, Parse, Rulebase, Bloom), seed (Command Code, Entire, Adam, Revnu) and Series A (Daytona, Cline). Crunchbase names Revnu as his most recent listed investment. An analysis of 1,140 devtools funding rounds by Evil Martians counted 7 deals for him and grouped him with angels whose names on a cap table signal practitioner backing to institutional investors. It gave his focus as AI devtools.
Crunchbase counts 12 AI investments by Browne since 2023. The AI companies it lists are Archil, Supermemory, Parse, Command Code, Cline, Rulebase, Sauna by Wordware, Daytona, Interfere, Beeps, Adam and Arcjet.
Many of these companies sell to software developers or provide infrastructure for AI agents and coding tools. Evil Martians named Daytona, Blacksmith, Supermemory and Archil as his notable picks. It also noted that Supermemory's investors included Browne, Jeff Dean and David Cramer. Crunchbase shows that others invested alongside him in rounds such as Archil and Supermemory.
Based on his public record, Browne backs early-stage companies. Most listed rounds are pre-seed or seed, and a few are Series A. His sector focus is AI developer tools and infrastructure, including coding agents, agent memory, sandboxes and storage. He is based in San Francisco. No geographic restriction is stated publicly.
I found no public statement from Browne about his check size, his fund size, or a formal thesis. Founders who want to pitch him should expect a product-first conversation. His background is as a developer and builder, and his public investments are in tools that developers use.
- Supermemory: AI memory infrastructure for apps and agents. Crunchbase lists a pre-seed round, and Evil Martians names it among his notable picks.
- Archil: AI infrastructure startup. Crunchbase shows a funding round with Browne among the investors, and Evil Martians names it among his notable picks.
- Cline: AI coding agent. Crunchbase lists a Series A round.
- Daytona: Infrastructure for running AI-generated code. Crunchbase lists a Series A round.
- Command Code: AI coding startup. Crunchbase lists a seed round.
- Parse: AI startup. Crunchbase lists a pre-seed round.
- Rulebase: AI startup. Crunchbase lists a pre-seed round.
- Adam: AI startup. Crunchbase lists a seed round.
- Entire: Crunchbase lists a seed round.
- Sauna by Wordware, Interfere, Beeps and Arcjet: other AI investments listed by Crunchbase. Round details are not public.
AI portfolio
Investing activity
Theo Browne has made 16 investments according to Crunchbase. 12 of those investments since 2023 were in AI companies, including Archil, Supermemory, Parse, Command Code and Cline.
Theo Browne appears in 2 AI deals tracked by the Lounge deals desk. The rounds are mostly Pre-seed and Seed, with a median round size of $5M. The most recent are Supermemory (Pre-seed, $3M, Jun 2026) and Command Code (Seed, $5M, Feb 2026).
Theo Browne most often invests alongside Dane Knecht, Susa Ventures, Browder Capital and David Cramer, and the companies they back on Lounge are mostly in AI.
Deals
Frequently asked questions about Theo Browne
Who is Theo Browne?
Theo Browne is a software engineer, founder of Ping Labs and T3 Chat, creator of the T3 Stack, and a developer YouTuber. He is also an angel investor based in San Francisco.
How many investments has Theo Browne made?
Crunchbase lists 16 investments, 12 of them in AI since 2023. It shows 0 lead investments and 0 exits.
What kinds of startups does Theo Browne invest in?
His public investments are mainly AI developer tools and infrastructure, such as Cline, Daytona, Supermemory and Archil. Most are pre-seed or seed rounds.
What is Theo Browne's check size?
He has not published a check size, and Crunchbase hides the round amounts on its public page. Lounge does not list a figure.
Does Theo Browne lead rounds?
Crunchbase lists 0 lead investments for him. His public record shows him joining rounds led by others.
How can founders reach Theo Browne?
He is active on X and LinkedIn, and he has a personal site at t3.gg. He has not published a formal pitch process.
Is Theo Browne an angel investor?
Yes. Theo Browne invests personally as an angel. Crunchbase counts 16 investments.
What AI companies has Theo Browne invested in?
Theo Browne's AI investments include Archil, Supermemory, Parse, Command Code, Cline, Rulebase, Sauna by Wordware and Daytona. The 2 rounds on Lounge are listed on this page with amounts, dates and co-investors.
Where is Theo Browne based?
Theo Browne is based in San Francisco, United States.
What stage does Theo Browne invest at?
In the rounds tracked on Lounge, Theo Browne has invested at Pre-seed and Seed, with a median round of $5M.