Catalyst is a community of founders, builders, operators & academics

Success isn't about the destination, but not the journey either.

It's the company you keep.

Built with intention,

for the intentional

We’re not a typical community.

To join, you don't need to meet revenue thresholds, or pay fees. You just need to be a fit. Learn more about what that means on Membership.

We run events curated for serious builders, operators and thinkers to have fun, grow, and create. Our philosophy is rooted in sustainable human flourishing.

Explore Catalyst

Events

Event formats we run

We're constantly trying new event formats. Here are a few we've been running.

Founder War Room Sessions

A sharp 60–90 min session with 4–5 handpicked peers. One takes the hot seat while the others dive deep. Perfect for time sensitive issues that need high level problem solving.

  • Introduce a challenge that only likeminded peers will understand

  • No fluff. Get straightforward, high-signal analysis

  • Talk to a curated group, matched to your challenge

  • Set up within 48-72 hours

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Values

Built around real connection

Catalyst is a startup community rooted in real-world connection. No noisy chats, no endless feeds - just focused time with people who create.

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We meet in person

Everything meaningful happens face-to-face for us. Dinners, retreats, and accompanying conversations enable depth that screens can't compete with.

Vector

Built to stay small

We don’t optimize for scale and don't intend to grow beyond Dunbar's number. Each gathering is designed for personal depth and signal.

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Intentional presence

Updates go out via email or private channels. We stick to providing enabling and supporting infrastructure for members.

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Non-profit & member-led

We don't like skewed incentives in communities. Hosting is member-led, while we actively support and initiate.

Investments

Back and be backed

Invest or raise through Catalyst’s internal network. We understand that the most valuable investments come from good connections, not pitches.

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Help good™ people succeed

Take on or Extend Advisory Positions

Support founders as an advisor — with product, core tech, strategy, or go-to-market. Or recruit a solid advisor within Catalyst.

Learn More

From the Community

What members are saying

  • Founder & Host
    Zowie Langdon
    Founder/Host of Catalyst & Technical Founder

    Being able to tap into a cohesive group of driven people is incredibly generative. Long term value, wisdom and prosperity is built on lasting relationships. Lives are actually changed this way, and I want to be structurally involved in cultivating exactly that process for others.

  • Thomas
    Thomas Guntenaar
    Founding engineer

    Being at the retreat with other founders created connections that feel way more meaningful and lasting than anything you’d get from a conference or event.

  • Olivier-member-photo
    Olivier Van Dijk
    Partner / advisor of Catalyst & Founder

    Catalyst brings together an invaluable network of builders looking to shape the world around them. I feel like I learn something new every day

  • Don
    Don Rico
    Co-Founder & CTO

    I had an awesome time meeting other people who are walking the same path in life as me, and left feeling more confident in myself, my business, and entrepreneurship in general - all while having lots of fun :D

  • Pieter
    Pieter Witteveen
    Co-Founder

    A week very well spent full of building, connecting, swimming, sailing and good food. Met many great like minded individuals. Came back full of energy and inspired.

  • WhatsApp Image 2025-09-07 at 21.37.07
    Marc Graczyk
    Co-Founder

    Confronting and discussing my crisis with other founders who were all in that moment as engaged as me and who all put their experience and skills towards my challenges was unique, eye opening and had immediate impact.

Connecting people from many domains

Want to build with us?

If you want to join a community that curates intentionally, moves deliberately, and values real-world connection, get in touch. We're happy to transparently explore if it's a fit.