Dev tools · alternatives · 2026
24 alternatives to Open-source RSVP app using Supabase and Flutter
I'm doing a new Show HN[1] as we have now made this open source, and got some interest in comments in the past few days. We initially built this app for some friends in a co-living community - they were using pen and paper to track who's attending lunch - but it was error-prone. First I suggested a shared Google Sheets or Calendar, but that was also messy to maintain. Eventually, I developed something just for them. They used it for a couple of years, they loved it and wanted to use it for more things, too. So I took all the learnings from what was now the MVP, and with some friends we now…
Below are 24 products that do a similar job, ranked by how close each is in meaning and then by launch-day votes.
- 1
Hey HN! I'm the developer of one of the most popular Android clients for HN, Harmonic for Hacker News. Over the years I have recieved many requests to open source the app which I am finally doing - sorry about taking so long :) Having been very busy working on my PhD during the last two years - Harmonic has not recieved the attention it deserves. I therefore hope that open sourcing it can give it a new lease on life. I also hope that by posting here many of the nice people who have reached out to me will notice that the app is finally open source. I'm also happy to answer questions about the…
2023 · github.com · its alternatives →
- 2LS
Greetings, creator here! I've been working on a new blogging platform specifically for lists on and off for a few months now and I'm excited to officially announce its launch. After seeing https://charm.sh a few months ago, I've been enamored by the idea of SSH apps. I decided that a blogging platform focused on developers could be the perfect use case for an SSH app. Also, I love writing lists. I think restricting writing to a set of lists can really help improve clarity in thought. The goal of this blogging platform is to make it simple to use the tools you love to write and…
2022 · lists.sh · its alternatives →
- 3SA
Hello all :) I made this BBS for fun and thought you all would enjoy it. It's not perfect, but it's been a fun exercise! see it: https://asciinema.org/a/Emg6SWrXMV6cehfQxrw1GRu75 try it: ssh -p 2223 shhhbb.com host it: https://github.com/donuts-are-good/shhhbb/releases/latest why? Every year I challenge myself in some new way, this year it is to push one project per week. You might recognize my static site generator [0] or my releaser for go [1] from previous posts as one of these weekly projects. If you want to join me in doing this, it's…
2023 · donuts-are-good.github.io · its alternatives →
- 4
Mobile 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…
2025 · github.com · its alternatives →
- 5
I built this tool about a year ago to get really good at the supabase ecosystem. We were trying to raise money on the idea, but that didn't occur, so I wanted to open-source it, as I would love to give back to the commmunity. It allows you to invite friends and family to be helpers for child-care, meals, and transportation, and then you can create an event and they will get auto-invited to it and can choose to support you. It is using vue on the frontend and then supabase on the backend for auth, database, realtime, storage, and edge functions. Anyway, I hope someone finds it useful, there…
2024 · github.com · its alternatives →
- 6
I hope you are doing better today than yesterday. (TLDR in the comments; or enjoy my story :) ) Why: About 11 months ago, I launched my app for the first time on Reddit's r/lonely because I had previously experienced loneliness myself during grad school. I wanted to reach out to people going through similar experiences by providing them with what would’ve helped me in the past. I felt this was an important mission for me and a much more rewarding one than my day job that I quit my job to work on the app full-time. It was necessary because I did not come from a programming background. I…
2024 · main.d1lmgoealm7rq0.amplifyapp.com · its alternatives →
- 7
I am about to graduate from university this year, and I had an idea to create a mobile app similar to TikTok but for OnlyFans. Interestingly, the inspiration to replicate TikTok came from an episode of the Acquired Podcast discussing Meituan. It seemed somewhat ironic to copy a Chinese app. I ran out of money to pay rent though, so I’m looking for jobs here in Sydney instead now. I want to keep working on this project in my spare time and would appreciate any feedback and particularly guidance for how to run an open-source project!
2023 · github.com · its alternatives →
- 8
Hey everyone! I’m thrilled to announce GroupTrack, an open-source project built with Flutter for real-time location tracking and sharing among users. Whether you’re keeping your family connected or ensuring safety among friends, GroupTrack offers a flexible solution for location-based features. What is GroupTrack? GroupTrack is a Flutter-based application designed to demonstrate effective real-time location tracking and sharing. It showcases how to manage continuous location updates in the foreground and background, implement geofencing, and customize maps to create an enhanced…
2024 · github.com · its alternatives →
- 9
yoth-yoth▲12Hi! My name is Kirill, I am developing yoth-yoth, a platform that combines canvas boards, pages, task tracker, calendar and much more (but in the future). The boards and the raw version of the pages are currently available. Here is a quick intro on using the boards: https://yoth-yoth.com/b/help For basic use, the platform is free and requires no registration, and all data is stored locally in the browser. Data synchronization and collaboration with other users are available by subscription. There are a lot of things in the plans, for example, the task tracker and calendar…
2025 · yoth-yoth.com · its alternatives →
- 10WB
Hey Mac, Jacob, Dominic and John here from the Commsor team. We originally built this for internal use to solve a frustration we had around manually sending calendar invites for virtual Zoom events we were hosting. We decided to polish it up a bit and release it for anyone to use, completely free. It enables you to quickly spin up an event page, collect RSVPs, send calendar invites, and export RSVPs. We've also built a host page for those hosting multiple events, making it easy to share one link with all of your upcoming events! You can see it in action here -…
2020 · its alternatives →
- 11AH
I've been playing around with Android development recently, and made this Hacker News app this weekend: Market link: https://market.android.com/details?id=com.mellort.hackernews ($1) Dropbox link: http://db.tt/jlqIcBg1 (free: if you like it, DL from the market, too!) I used api.ihackernews.com for the data. Unfortunately, some of the pagination from that source is broken, so I can only return one page of results. In the future, I might play around with creating my own API server on App Engine. I'm not sure what my plans are for the source yet, but I'd like to make it open source. If you're…
2012 · market.android.com · its alternatives →
- 12
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.…
Jan 2026 · yupno.io · its alternatives →
- 13IM
Hi HN, After I finished my thesis on feedback management for SaaS at the end of last year, I thought it was time to do something hands-on that topic. Since I like the idea of such feedback tools, that lets you collaborate with users to find solutions together - instead of having a separated feedback from each user - this became my starting point. I also like the approach of the chat widgets as they make it easy for users to get in touch with the people behind the app. So I tried to combine these two approaches with sleekplan.com. Here are some of the main features: * Collect & discuss…
2020 · its alternatives →
- 14
Hello! I built a web-app called JungleReader that lets you follow RSS, Mastodon, YouTube, Reddit, and random blogs, all in one place. I made JungleReader as a central place to follow the blogs and sites I like, which I otherwise often lose track of. My next project (which is WIP) is a web-app called JungleWriter where you can build a simple blog and export it for hosting. I love finding a good, free-standing blog, and hope to make it easier for people to read and write them. Feedback is appreciated, thanks :)
2023 · zajungle.com · its alternatives →
- 15
Hi HN! Flocklist.app is a minimalist, private dependency tracker. I mostly just built this for myself, since I would sit down to work, look at my to-do list, and I couldn't do 2/3 of the tasks. None of the solutions to this really cut it, either because they are a little clunky or are enterprise scale (like Jira, Linear, you know the rest). I figure I can't be the only one with this problem, so I built this free app to fix it. (It also doesn’t store tasks in the cloud.) I would love to hear any feedback you have!
Apr 2026 · flocklist.app · its alternatives →
- 16GA
I am announcing the private beta of my first web app (http://getfounder.com). The beta will launch in just one city, which will be determined by the number of entries on the location-aware sign up page. As this is my first public release, I'm looking to the HN community to offer me feedback on what I should/shouldn't be displaying on the homepage. I'd be grateful for any advice you had to offer. Thanks, and I hope to see some of you in the private beta! Colin
2011 · getfounder.com · its alternatives →
- 17
A Beautiful Open Source RSS & Podcast App
2018 · getstream.io · its alternatives →
- 18HA
Hello HN! Here's my November Startup Sprint project (coded in two days). http://hackerlunch.com It allows you to post your lunch plans and lets other hackers join you. I built this because I often see HN users are interested in meeting each other if they are in the same area. I am not a coder, so this version is very rough. If people use it, I will work with others to build a more polished version. I would love some feedback. What do you think? Is this something you will be using?
2010 · hackerlunch.com · its alternatives →
- 19FA
Hi HN, Two things inspired me to build this: Andrej Karpathy recently talked about going back to RSS feeds — "higher quality longform and a lot less slop intended to provoke" (https://x.com/karpathy/status/2018043254986703167). Around the same time, Marc Andreessen shared his information source: 25% X, 25% podcasts with practitioners, 25% conversations with AI, 25% old books (https://x.com/pmarca/status/2030949039345467570). This made me realize how much it matters to control what you let in. But I've used to the feed-style reading habit…
Apr 2026 · its alternatives →
- 20
- 21
Nowa▲8Ever feel exhausted by the endless back-and-forth of "When should we meet?" and "How much does everyone owe?" when organizing events with friends or family? I've been there too, and found that existing tools were either too feature-heavy or required tedious account setup. That's why I built Nowa - an event management app focused on just the essentials that works by simply sharing a URL, no registration required. Key Features No-signup invitations - Just share a URL or QR code and anyone can join instantly. I prioritized simplicity so even grandparents can use it without confusion. Intuitive…
2025 · nowa.one · its alternatives →
- 22
After I posted about https://cosme.dev/ask-docs on Reddit I received some messages asking me how If I was going to make the code open source or if I could show them how I did it. So I decided to create this repo so you can take a look at the code and maybe apply the same techniques on your own apps. It's made using only PHP as language so I think is pretty different since most stuff out there is made using python or javascript. It uses the OpenAI API and Redis as a vector database.
2023 · github.com · its alternatives →
- 23WW
Over three months ago, I posted my book on HN and got tremendous +ve reponse. I am happy to inform that I have published the book to leanpub as per the comments I got on HN itself! It is pay as you go model, and the minimum is $0 because I wanted to contribute back to the FOSS Community
2016 · its alternatives →
- 24
Hi HN, Dailygram (open beta) lets you pick any public Instagram or X profile; once a day or week it fetches new posts, runs them through GPT-4o, and delivers a digest you can scan in under a minute—both as an HTML email and via an auto-updating RSS feed. Early adopters include marketers, journalists, and solo founders who track competitors or industry voices without opening social apps. So far: 111 sign-ups, 1 565 digests sent, 56 % open rate, 8 % click-through. Tech notes: Laravel backend, Apify for scraping, GPT-4o for summarisation, Maizzle + AWS SES for mail, signed-URL webhooks for…
2025 · dailygram.me · its alternatives →
Also compare
- Open sourcing Harmonic, my Android Hacker News client alternatives
- Lists.sh – A Microblog for Lists alternatives
- Shhhbb, an SSH BBS alternatives
- Meetup.com and eventribe alternative to small groups alternatives
- Support.dev – a non-trivial Vue and Supabase app alternatives
- I made a Flutter app for loneliness. 14000 min of voice messages later: alternatives
Ranked by how close each launch is in meaning, then by votes. Prices were read from each product’s own site when checked and can change. Refine with your own description →