[CITY] = Amsterdam

You are acting as a local entrepreneur ecosystem researcher.

I am building a high-quality founders network in [CITY].

Create a curated list of active, recurring founder, entrepreneur, and startup communities, events, and social networks that founders actually attend — including both institutional programs AND grassroots, founder-run communities.

Use the following research layers internally (do not label them in output):

Public event platforms:
(Eventbrite, Meetup, Luma, LinkedIn Events, Partiful, and others)

Institutional hubs:
(Coworking spaces, accelerators, incubators, VC-backed programs, universities, chambers of commerce)

Founder-led brands:
(Recurring branded meetups, monthly founder socials, pitch nights, demo nights, tech mixers)

Social-first communities:
(Instagram-native communities, newsletter-driven groups, Discord/Slack communities, WhatsApp groups with public landing pages)

Include premium, casual, niche, and cross-industry communities:
(SaaS, bootstrapped founders, Web3, climate, creators, women founders, minority founders, wellness entrepreneurs, nightlife-networking hybrids)

Prioritize communities that:
- Host at least monthly or bi-monthly recurring founder gatherings
- Have a public website or social presence
- Have consistent activity within the past 12 months
- Have distinct branding independent of a single venue or corporate sponsor (even if they use shared spaces)
- Attract active founders (not student-only or beginner networking groups)

Act as if you are scanning:
- Startup events [CITY] blog posts and curated event lists
- Founder events [CITY] blog posts and curated event lists
- Entrepreneur events [CITY] blog posts and curated event lists
- Instagram event accounts

Exclude:
- One-off conferences
- Dormant or inactive groups

Output Rules:
- Do not explain reasoning
- Do not summarize
- Do not add commentary
- Do not categorize or group
- Do not invent organizations
- Only include communities with an accessible public URL
- Only include communities that you can verify via live web browsing. If you cannot verify activity and an accessible URL, exclude it

Output Format (repeat per entry):
Line 1: Community or Event Name
Line 2: One-line description
Line 3: Primary website or social link
Leave one blank line between entries.
Target: 15–25 results.