Show HN: Cactoide – Federated RSVP Platform

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Nov 11, 2025 - 17:54

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Cactoide(ea)* 🌵

The Ultimate RSVP Platform

A federated mobile-first event RSVP platform that lets you create events, share unique URLs, and collect RSVPs without any registration required. With built-in federation, discover and share events across a decentralized network of instances. View on GitHub

Cactoide is open source and easily self-hostable. View the source code, contribute, or host your own instance.

Why Cactoide(ae)?🌵*

Like the cactus, great events bloom under any condition when managed with care. Cactoide(ae) helps you streamline RSVPs, simplify coordination, and keep every detail efficient—so your gatherings are resilient, vibrant, and unforgettable.

Discover Public Events

See what others are planning and get inspired

Why Cactoide?

🎯

Instant Event Creation

Create events in seconds with our streamlined form. No accounts, no waiting, just pure efficiency. 🔗

One-Click Sharing

Each event gets a unique, memorable URL. Share instantly via any platform or messaging app. 🔍

All-in-One Clarity

No more scrolling through endless chats and reactions. See everyone's availability and responses neatly in one place. 👤

No Hassle, No Sign-Ups

Skip registrations and endless forms. Unlike other event platforms, you create and share instantly — no accounts, no barriers. 🛡️

Smart Limits

Choose between unlimited RSVPs or set a limited capacity. Perfect for any event size. ✨

Effortless Simplicity

Designed to be instantly clear and easy. No learning curve — just open, create, and go. 🎫

Invite Links

Create invite-only events with special links. Only people with the specific invite link can RSVP, giving you full control over who can attend. 🌐

Federation

Connect with other Cactoide instances to discover events across the network. Share your public events and create a decentralized event discovery network.