Yupno – No-login RSVP tool with REST API and webhooks
Hi HN, I got tired of having to register and having friends having to register accounts just for accepting a party or dinner invitation (also plenty of friends have left social media) so I coded a minimal, no-login event tool: https://yupno.com Dev-friendly stuff: Full REST API, async webhooks for RSVPs with Slack/Discord-adapted payloads. Auto-generates Ical, JSCalendar and JSON-LD. No auth, uses admin/user tokens in url. Should be possible connect to other stuff in fun ways. Free to use, no ads, no tracking. I just wanted a simple tool that respects my time and privacy.…
Yupno – No-login RSVP tool with REST API and webhooks launched on January 22, 2026 with 5 votes, #3,400 of 14,584 launches that month and more than 75% of that year's launches.
What it does
Create a free event RSVP page in seconds. No account, no tracking, no ads. Share a link and collect yup-or-no replies — the simplest RSVP maker online.
In the maker’s words, at launch
Hi HN, I got tired of having to register and having friends having to register accounts just for accepting a party or dinner invitation (also plenty of friends have left social media) so I coded a minimal, no-login event tool: https://yupno.com Dev-friendly stuff: Full REST API, async webhooks for RSVPs…
Does a similar job
all alternatives →
RSVPlease on nostr2023 · rsvplease.me · ▲121Simple RSVP tracking, know who will join your next event
Meetup.com and eventribe alternative to small groups2025 · github.com · ▲117Mobile first open-source RSVP platform. Alternative for meetup.com / eventribe for small companies and groups. If you have a small group and don't want to pay for services you can easily selfhost this solution. Open for improvements and for feedback, ofc. - One-Click Sharing - Each event gets a unique, memorable URL. Share instantly via any platform or messaging app. - No Hassle, No Sign-Ups - Skip registrations and endless forms. Unlike other event platforms, you create and share instantly — no accounts, no barriers. - Effortless Simplicity - Designed to be instantly clear and easy. No…

I made an online Webhook Tester2024 · webhook.cool · ▲43Hi HN! Last year, I built LocalCan app in which you can develop apps using .local domains and Public URLs. Although it allows for testing webhooks too, I wanted to give back and create a free online tool specifically for that purpose! And so, I've made Webhook.cool Simply use your unique webhook URL to send any webhook to it from services like Shopify, Slack, Mailchimp, Trello, GitHub, PayPal, Discord, and Jira. Give it a try and let me know how if you have any feedback.
- EIEmauth.io – Free service for Slack-style passwordless login links2020 · emauth.io · ▲36
Use Reddit via JSON feeds without authentication2023 · github.com · ▲10Hey guys, As Reddit makes it harder to use their API, I decided to make a wrapper around their undocumented JSON feeds. This allows you to get data from Reddit without authentication. This is only suitable for getting public data. I hope this helps someone out there. I'm also planning to make an android app via CapacitorJS using this library. Feel free to ask questions or give feedback. Thanks!
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Source: Show HN post ↗ · launch text quoted in part
Launched alongside, January 2026
the whole month →- IN
Hey HN! I wanted to share something I built over the last few weeks: isometric.nyc is a massive isometric pixel art map of NYC, built with nano banana and coding agents. I didn't write a single line of code. Of course no-code doesn't mean no-engineering. This project took a lot more manual labor than I'd hoped! I wrote a deep dive on the workflow and some thoughts about the future of AI coding and creativity: http://cannoneyed.com/projects/isometric-nyc
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