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Cactoide

Free#17 of 24 in Invitation Maker Software

Cactoide: A focused open-source RSVP tool for simple, account-free event coordination. Ranked #17 of 24 in Invitation Maker Software by our editors (7.4/10); pricing: Open source; best for minimal open-source event RSVPs.

7.4/10Editor score

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Cactoide7.4 Visit Cactoide

At a glance

Editor score
7.4 / 10
Pricing
Open source
Best for
Minimal open-source event RSVPs
Paid from
Free
RSVP management
Yes
Facts checked
20 Sep 2026

Where it wins
- Creates shareable events without organizer or guest accounts
- Supports public, invite-only, limited, and unlimited-capacity events
- Offers calendar links, response overviews, and Docker self-hosting
Where it doesn't
- Does not provide invitation design or visual customization features
- Link-based delivery offers fewer channels than email or messaging tools
- Docker-based self-hosting requires technical setup and maintenance

Our verdict on Cactoide

Cactoide is a mobile-first, federated RSVP web application for organizers who want to create events, share unique URLs, and collect responses without requiring guest registration. It supports public and invite-only events, limited or unlimited RSVP capacity, and an availability and response overview. The product is a good fit for simple event coordination where the event page and RSVP flow matter more than designed invitations, automated outreach, or a broader event-marketing system.

Its strongest feature set centers on low-friction participation. Hosts can create an event without account registration, while guests can respond without creating accounts. Public-event federation adds discovery between instances, and calendar support includes iCal, ICS, and webcal formats. Apple Calendar, Google Calendar, and Outlook can fit into that workflow through calendar links. These capabilities make Cactoide suitable for community events, informal gatherings, and organizers who want a direct link rather than a multi-channel invitation campaign.

The trade-off is a narrow focus. Cactoide handles event pages, RSVP collection, capacity controls, response visibility, and calendar interoperability, but it does not offer invitation design features. Its open-source, self-hostable model can appeal to teams that want control over deployment, with Docker-based setup available for running an instance. That model is less suitable for organizers seeking a polished invitation builder, built-in email delivery, or a managed workflow with less technical responsibility. Choose Cactoide for minimal, account-free RSVPs and self-hosting; choose an invitation-focused alternative when presentation and outreach are central.

Your product? Our editors can test Cactoide in depth and publish a review, labelled as paid · from $149/mo →

Cactoide pricing

Plans Open sourceFree Free to use — no paid tier required for the core job.

See plans on cactoide.org

Cactoide fact sheet

Free plan	Not verified
Paid from	Free
RSVP management	Yes
Guest limit	Not verified
Delivery channels	Link
Event page	Yes
Template library	Not verified
Custom design upload	Not verified
Deployment	Self-hosted
Platforms	Web
Support	Email, Community
Built for	Small business (editorial estimate)
Integrations	3 integrations: Apple Calendar, Google Calendar, Outlook
Pricing	Open source
Website	cactoide.org
Facts checked	20 Sep 2026

Cactoide integrations

Cactoide lists 3 integrations on its own site.

Apple Calendar
Google Calendar
Outlook

Alternatives to Cactoide

See all Cactoide alternatives →

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Featured on iTechGuides

Cactoide is listed in our Invitation Maker Software directory. Add the badge to your site — it links back to this page.

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Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026

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Last updated 7 Oct 2026 · How we research and update