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Show HN: Someday, Open-Source Calendly Alternative for Gmail / Google App Script

Free and open-source. Simple alternative to cal.com / calendly, built on Google-App-Script for Gmail users. Built with modern technologies like React, TypeScript, Shadcn/UI, and Vite.

Show HN: A minimalist (brutalist?) website for sharing all your links

Do you remember the internet of the early 2000s? Neat single function websites that let you be creative and customize your spaces and weren't setting out to be the next major conglomerate (or to be bought by them).<p>I'm building a series of websites that have simple concepts but too many of the players have tried to make their product so big. I also used to live in a very rural area so my goal is to make websites that load fast even on very slow internet. I'm starting with Lynx.boo.<p>A linktree style website that lets you fully customize your CSS (and adds a bunch of classes to your links to help style them easier as well as very non-restrictive CSS you can do html{display:none;} if you really want to) and the features aren't locked behind yet-another monthly fee. I'll be adding analytic support when I figure out the best way to do it.<p>Also there isn't a user system (per se), you just confirm changes by email but you never register for the site and you won't be spammed. Please feel free to try to break the CSS (or anything) as much as you want. I think it's fairly robust but I would love any security vulnerabilities you see.<p>Thank you for your time!

Show HN: A minimalist (brutalist?) website for sharing all your links

Do you remember the internet of the early 2000s? Neat single function websites that let you be creative and customize your spaces and weren't setting out to be the next major conglomerate (or to be bought by them).<p>I'm building a series of websites that have simple concepts but too many of the players have tried to make their product so big. I also used to live in a very rural area so my goal is to make websites that load fast even on very slow internet. I'm starting with Lynx.boo.<p>A linktree style website that lets you fully customize your CSS (and adds a bunch of classes to your links to help style them easier as well as very non-restrictive CSS you can do html{display:none;} if you really want to) and the features aren't locked behind yet-another monthly fee. I'll be adding analytic support when I figure out the best way to do it.<p>Also there isn't a user system (per se), you just confirm changes by email but you never register for the site and you won't be spammed. Please feel free to try to break the CSS (or anything) as much as you want. I think it's fairly robust but I would love any security vulnerabilities you see.<p>Thank you for your time!

Show HN: Shimmer – ADHD-adapted body doubling

I’m Chris, one of the co-founders of Shimmer. In 2022, following my ADHD diagnosis, I launched Shimmer (<a href="https://shimmer.care">https://shimmer.care</a>), a 1:1 ADHD Coaching for adults (HN launch here: <a href="https://news.ycombinator.com/item?id=33468611">https://news.ycombinator.com/item?id=33468611</a> ). One problem we discovered while running 1:1 coaching is that people weren’t able to actually follow through (in real life) on the ideas they came up with during their weekly sessions with their coach.<p>There is a concept called body doubling that’s popular within the ADHD community—it’s basically getting things done in the presence of other people. The positive accountability is proven to work. However, our members told us they tried other body doubling solutions or attempted to organize it themselves in real life but none of the solutions stuck. So we reverse engineered productive moments our members described, paired with scientific backing of what motivates ADHD-ers, and designed an online body doubling experience for our coaching members that provides a safe but productive space for them to get things done between weekly sessions.<p>A few of the motivators we infused into the traditional body doubling experience were 1) newness/novelty — each session has a different guided experience in the break like breathwork or stretching, 2) urgency — there’s a large visible pomodoro timer on the top left that counts down from 25 min, 3) community — the shared space is ADHD-friendly, and has a mood check-in & sharing functionality built in so you don’t feel alone, 4) accountability — there’s a task list where each time you check something off, it notifies the group, and you can view others’ as well if they opt in. Here’s a video walking through the product experience: <a href="https://www.tella.tv/video/shimmer-body-doubling-demo-8b1c">https://www.tella.tv/video/shimmer-body-doubling-demo-8b1c</a><p>Our body doubling was created and iterated alongside thousands of people with ADHD on our coaching platform over 9+ months of building & iterating with them. We’re excited to unveil this experience. If you have ADHD (or executive functioning challenges), we’d love for you to check out coaching & body doubling and give us critical feedback.<p><i>Shimmer’s pricing: $140/mo. for Essentials plan (15-min weekly sessions), $230/mo. for Standard plan (30-min weekly sessions), $345/mo. for Immersive plan (45-min weekly sessions); all plans start with an additional 25% off the first month, HSA/FSA-eligible. The reason why the price is so high is that this is not a self-guided app or SaaS tool. You’re matched with a real, credentialed coach (not AI) and since ADHD coaching is not reimbursed in the US, the price is hard for us to bring down because the largest cost component is the coach’s compensation.</i><p><i>*We know these prices are still expensive for many people with ADHD. Here are the actions we’re taking: (1) we offer needs-based scholarships and aim to have 5% of members on them at any time, (2) we often run fully sponsored scholarships with our partners—over 60 full ride scholarships and 100 group coaching spots have been disbursed alongside Asian Mental Health Project, Government of Canada, and more, and (3) we have aligned our coaching model alongside Health & Wellness Coaching, which is expected to be reimbursed in the next years. If there are ways we can further drive down the cost, please reach out to me directly at chris@shimmer.care.</i>

Show HN: Shimmer – ADHD-adapted body doubling

I’m Chris, one of the co-founders of Shimmer. In 2022, following my ADHD diagnosis, I launched Shimmer (<a href="https://shimmer.care">https://shimmer.care</a>), a 1:1 ADHD Coaching for adults (HN launch here: <a href="https://news.ycombinator.com/item?id=33468611">https://news.ycombinator.com/item?id=33468611</a> ). One problem we discovered while running 1:1 coaching is that people weren’t able to actually follow through (in real life) on the ideas they came up with during their weekly sessions with their coach.<p>There is a concept called body doubling that’s popular within the ADHD community—it’s basically getting things done in the presence of other people. The positive accountability is proven to work. However, our members told us they tried other body doubling solutions or attempted to organize it themselves in real life but none of the solutions stuck. So we reverse engineered productive moments our members described, paired with scientific backing of what motivates ADHD-ers, and designed an online body doubling experience for our coaching members that provides a safe but productive space for them to get things done between weekly sessions.<p>A few of the motivators we infused into the traditional body doubling experience were 1) newness/novelty — each session has a different guided experience in the break like breathwork or stretching, 2) urgency — there’s a large visible pomodoro timer on the top left that counts down from 25 min, 3) community — the shared space is ADHD-friendly, and has a mood check-in & sharing functionality built in so you don’t feel alone, 4) accountability — there’s a task list where each time you check something off, it notifies the group, and you can view others’ as well if they opt in. Here’s a video walking through the product experience: <a href="https://www.tella.tv/video/shimmer-body-doubling-demo-8b1c">https://www.tella.tv/video/shimmer-body-doubling-demo-8b1c</a><p>Our body doubling was created and iterated alongside thousands of people with ADHD on our coaching platform over 9+ months of building & iterating with them. We’re excited to unveil this experience. If you have ADHD (or executive functioning challenges), we’d love for you to check out coaching & body doubling and give us critical feedback.<p><i>Shimmer’s pricing: $140/mo. for Essentials plan (15-min weekly sessions), $230/mo. for Standard plan (30-min weekly sessions), $345/mo. for Immersive plan (45-min weekly sessions); all plans start with an additional 25% off the first month, HSA/FSA-eligible. The reason why the price is so high is that this is not a self-guided app or SaaS tool. You’re matched with a real, credentialed coach (not AI) and since ADHD coaching is not reimbursed in the US, the price is hard for us to bring down because the largest cost component is the coach’s compensation.</i><p><i>*We know these prices are still expensive for many people with ADHD. Here are the actions we’re taking: (1) we offer needs-based scholarships and aim to have 5% of members on them at any time, (2) we often run fully sponsored scholarships with our partners—over 60 full ride scholarships and 100 group coaching spots have been disbursed alongside Asian Mental Health Project, Government of Canada, and more, and (3) we have aligned our coaching model alongside Health & Wellness Coaching, which is expected to be reimbursed in the next years. If there are ways we can further drive down the cost, please reach out to me directly at chris@shimmer.care.</i>

Prisma Postgres – Runs on bare metal and unikernels

Show HN: AI OmniGen – AI Image Generator with Consistent Visuals

AI OmniGen is an advanced AI image generator, offering identity preservation for consistent subject representation and seamless image editing for refined, customized visuals.

Show HN: AI OmniGen – AI Image Generator with Consistent Visuals

AI OmniGen is an advanced AI image generator, offering identity preservation for consistent subject representation and seamless image editing for refined, customized visuals.

Show HN: I built an app to use a QR code as my doorbell

I didn’t have a doorbell before (multiple reasons) and my house feels unwelcoming without one. So I built a doorbell app that uses a QR code - visitors scan the QR code to ring the doorbell and I get notified on my phone.<p>Here is an example of the QR code I have on my door. You can scan it and say hello: <a href="https://www.thebacklog.net/img/2024/10/show-hn.png" rel="nofollow">https://www.thebacklog.net/img/2024/10/show-hn.png</a><p>This was also a great excuse to build my first app for Android and iPhone.<p>I’d love to get some feedback before I spend more time polishing the app. Please try it out and feel free to ask me any questions! No logins or accounts needed.

Show HN: I built an app to use a QR code as my doorbell

I didn’t have a doorbell before (multiple reasons) and my house feels unwelcoming without one. So I built a doorbell app that uses a QR code - visitors scan the QR code to ring the doorbell and I get notified on my phone.<p>Here is an example of the QR code I have on my door. You can scan it and say hello: <a href="https://www.thebacklog.net/img/2024/10/show-hn.png" rel="nofollow">https://www.thebacklog.net/img/2024/10/show-hn.png</a><p>This was also a great excuse to build my first app for Android and iPhone.<p>I’d love to get some feedback before I spend more time polishing the app. Please try it out and feel free to ask me any questions! No logins or accounts needed.

Show HN: Marmite – Zero-config static site generator

Just run `marmite` on a folder full of markdown files and get a full website/blog running in seconds.<p>"I'm a big user of other SSGs but it is frequently frustrating that it takes so much setup to get started. Just having a directory of markdown files and running a single command sounds really useful. — marmite user."

Show HN: Trench – Open-source analytics infrastructure

Hey HN! I want to share a new open source project I've been working on called Trench (<a href="https://trench.dev" rel="nofollow">https://trench.dev</a>). It's open source analytics infrastructure for tracking events, page views, and identifying users, and it's built on top of ClickHouse and Kafka.<p><a href="https://github.com/frigadehq/trench">https://github.com/frigadehq/trench</a><p>I built Trench because the Postgres table we used for tracking events at our startup (<a href="http://frigade.com/">http://frigade.com/</a>) was getting expensive and becoming a performance bottleneck as we scaled to millions of end users.<p>Many companies run into the same problem as us (e.g. Stripe, Heroku: <a href="https://brandur.org/fragments/events" rel="nofollow">https://brandur.org/fragments/events</a>). They often start by adding a basic events table to their relational database, which works at first, but can become an issue as the application scales. It’s usually the biggest table in the database, the slowest one to query, and the longest one to back up.<p>With Trench, we’ve put together a single Docker image that gives you a production-ready tracking event table built for scale and speed. When we migrated our tracking table from Postgres to Trench, we saw a 42% reduction in cost to serve on our primary Postgres cluster and all lag spikes from autoscaling under high traffic were eliminated.<p>Here are some of the core features:<p>* Fully compliant with the Segment tracking spec e.g. track(), identify(), group(), etc.<p>* Can handle thousands of events per second on a single node<p>* Query tracking data in real-time with read-after-write guarantees<p>* Send data anywhere with throttled and batched webhooks<p>* Single production-ready docker image. No need to manage and roll your own Kafka/ClickHouse/Nodejs/etc.<p>* Easily plugs into any cloud hosted ClickHouse and Kafka solutions e.g. ClickHouse Cloud, Confluent<p>Trench can be used for a range of use cases. Here are some possibilities:<p>1. Real-Time Monitoring and Alerting: Set up real-time alerts and monitoring for your services by tracking custom events like errors, usage spikes, or specific user actions and sending that data anywhere with Trench’s webhooks<p>2. Event Replay and Debugging: Capture all user interactions in real-time for event replay<p>3. A/B Testing Platform: Capture events from different users and groups in real time. Segment users by querying in real time and serve the right experiences to the right users<p>4. Product Analytics for SaaS Applications: Embed Trench into your existing SaaS product to power user audit logs or tracking scripts on your end-users’ websites<p>5. Build a custom RAG model: Easily query event data and give users answers in real-time. LLMs are really good at writing SQL<p>The project is open-source and MIT-licensed. If there’s interest, we’re thinking about adding support for Elastic Search, direct data integrations (e.g. Redshift, S3, etc.), and an admin interface for creating queries, webhooks, etc.<p>Have you experienced the same issues with your events tables? I'd love to hear what HN thinks about the project.

Show HN: Mdx – Execute your Markdown code blocks, now in Go

Hey HN! I recently came across makedown here on HN and loved the concept. Wanting to learn Go, I thought this could be a great starter project - so I started working on my own Go implementation, which I’m calling mdx (<a href="https://github.com/dim0x69/mdx">https://github.com/dim0x69/mdx</a>).<p>Key Features:<p>- Define dependencies between commands<p>- Supports shebangs<p>- Ability to pass arguments to code blocks<p>Would love feedback and thoughts!<p>Ref. makedown: <a href="https://github.com/tzador/makedown">https://github.com/tzador/makedown</a>. Thanks for the idea! :)

Show HN: Satoshi9000 analog BTC key generator (mechanical)

I built this machine so I could generate Bitcoin keys that I could trust. Air-gapped and simple to use and understand (mechanical).<p>The Satoshi 9000 demo: <a href="https://youtu.be/bJiOia5PoGE" rel="nofollow">https://youtu.be/bJiOia5PoGE</a><p>The key value proposition of the machine is that it generates analog randomness in the physical world and converts it into digital (1’s and 0’s) randomness. Seamlessly.<p>But it occurs to me that it may have other uses beyond crypto keys for your own use, such as: * Randomized clinical trials. Clinical trials need a high degree of transparency for ethical reasons; also, for legal reasons should it come to light after the trial has ended that patient selection and treatment selection was not random or in some way biased (say, by the researchers themselves). The machine described herein can provide that transparency to young and old patients, technical and non- technical. * Non-technical management. Many network engineers in need of security keys have bosses that are non-technical. Such managers might prefer security keys (and their generation) which are easier for them to understand. * Estate planning. Suppose members of a family were to inherit digital assets (such as Bitcoin, for example). Not all members of the family are technical and understand Bitcoin. However, each will still need to generate a secure Bitcoin key to receive their share of the inheritance. The machine described herein might help in that task because its source of randomness is more easily understood by laypeople and each can generate their own private key in private (in isolation with the machine). * Anywhere where the users have to have an intuitive understanding of how the randomness is being created; whether they are 5 years old, or 95 years old, and all ages in between.<p>I'm curious to know if any of the folks over at HN can think of other use cases?

Show HN: Satoshi9000 analog BTC key generator (mechanical)

I built this machine so I could generate Bitcoin keys that I could trust. Air-gapped and simple to use and understand (mechanical).<p>The Satoshi 9000 demo: <a href="https://youtu.be/bJiOia5PoGE" rel="nofollow">https://youtu.be/bJiOia5PoGE</a><p>The key value proposition of the machine is that it generates analog randomness in the physical world and converts it into digital (1’s and 0’s) randomness. Seamlessly.<p>But it occurs to me that it may have other uses beyond crypto keys for your own use, such as: * Randomized clinical trials. Clinical trials need a high degree of transparency for ethical reasons; also, for legal reasons should it come to light after the trial has ended that patient selection and treatment selection was not random or in some way biased (say, by the researchers themselves). The machine described herein can provide that transparency to young and old patients, technical and non- technical. * Non-technical management. Many network engineers in need of security keys have bosses that are non-technical. Such managers might prefer security keys (and their generation) which are easier for them to understand. * Estate planning. Suppose members of a family were to inherit digital assets (such as Bitcoin, for example). Not all members of the family are technical and understand Bitcoin. However, each will still need to generate a secure Bitcoin key to receive their share of the inheritance. The machine described herein might help in that task because its source of randomness is more easily understood by laypeople and each can generate their own private key in private (in isolation with the machine). * Anywhere where the users have to have an intuitive understanding of how the randomness is being created; whether they are 5 years old, or 95 years old, and all ages in between.<p>I'm curious to know if any of the folks over at HN can think of other use cases?

Show HN: RF Hunter – Find hidden cameras and other devices

This project is an RF Signal Scanner built using an ESP32, AD8317 RF detector, and various other components. It's designed to detect and measure RF signals in the environment and display the signal strength on an OLED display. It's useful to find hidden cameras, wiretapping devices, and other RF-enabled devices.

Show HN: RF Hunter – Find hidden cameras and other devices

This project is an RF Signal Scanner built using an ESP32, AD8317 RF detector, and various other components. It's designed to detect and measure RF signals in the environment and display the signal strength on an OLED display. It's useful to find hidden cameras, wiretapping devices, and other RF-enabled devices.

Show HN: RF Hunter – Find hidden cameras and other devices

This project is an RF Signal Scanner built using an ESP32, AD8317 RF detector, and various other components. It's designed to detect and measure RF signals in the environment and display the signal strength on an OLED display. It's useful to find hidden cameras, wiretapping devices, and other RF-enabled devices.

Show HN: 2048 turned 10 this year, I built an updated version to celebrate

Hi all! My name is Gabriele Cirulli, I’m the original creator of 2048. Ten years ago, someone posted 2048 on HN[1] and suddenly it seemed like everyone was playing it. Back then, I wrote a bit about my experience during those weeks[2].<p>Even after all these years, that experience still feels a bit surreal to me. I’m deeply grateful to everyone who connected with the game, whether in small or significant ways, and for the stories shared along the way. Some people expressed how they were going through tough times and found some comfort, however small, in playing 2048.<p>At the start of last year, I wanted to breathe new life into the game as it was starting to show its age. I quit my job last October to work on 2048 full time and spent a year building this new version (the original took just 5 days!). I wanted to pay tribute to what made 2048 great while modernizing and polishing the experience.<p>The idea of adding powerups came when Prime Gaming and I connected to see if we could create a special version of 2048 for their members, with some exclusive extras. Some of those powerups made it into the main game, though there’s still a Classic[3] mode just like the original for those who prefer a more hardcore experience. The old site is also still online[4].<p>2048 is now my full-time focus, and I’m excited about the ways it can keep improving. I wanted to share this update with the community where it all began, both for a bit of nostalgia and to hear your thoughts and feedback!<p>Thank you all so much!<p>— Gabriele<p>[1]: <a href="https://news.ycombinator.com/item?id=7373566">https://news.ycombinator.com/item?id=7373566</a><p>[2]: <a href="https://medium.com/@gabrielecirulli/2048-success-and-me-7dc664f7a9bd" rel="nofollow">https://medium.com/@gabrielecirulli/2048-success-and-me-7dc6...</a><p>[3]: <a href="https://play2048.co/classic" rel="nofollow">https://play2048.co/classic</a><p>[4]: <a href="https://classic.play2048.co" rel="nofollow">https://classic.play2048.co</a>

Show HN: 2048 turned 10 this year, I built an updated version to celebrate

Hi all! My name is Gabriele Cirulli, I’m the original creator of 2048. Ten years ago, someone posted 2048 on HN[1] and suddenly it seemed like everyone was playing it. Back then, I wrote a bit about my experience during those weeks[2].<p>Even after all these years, that experience still feels a bit surreal to me. I’m deeply grateful to everyone who connected with the game, whether in small or significant ways, and for the stories shared along the way. Some people expressed how they were going through tough times and found some comfort, however small, in playing 2048.<p>At the start of last year, I wanted to breathe new life into the game as it was starting to show its age. I quit my job last October to work on 2048 full time and spent a year building this new version (the original took just 5 days!). I wanted to pay tribute to what made 2048 great while modernizing and polishing the experience.<p>The idea of adding powerups came when Prime Gaming and I connected to see if we could create a special version of 2048 for their members, with some exclusive extras. Some of those powerups made it into the main game, though there’s still a Classic[3] mode just like the original for those who prefer a more hardcore experience. The old site is also still online[4].<p>2048 is now my full-time focus, and I’m excited about the ways it can keep improving. I wanted to share this update with the community where it all began, both for a bit of nostalgia and to hear your thoughts and feedback!<p>Thank you all so much!<p>— Gabriele<p>[1]: <a href="https://news.ycombinator.com/item?id=7373566">https://news.ycombinator.com/item?id=7373566</a><p>[2]: <a href="https://medium.com/@gabrielecirulli/2048-success-and-me-7dc664f7a9bd" rel="nofollow">https://medium.com/@gabrielecirulli/2048-success-and-me-7dc6...</a><p>[3]: <a href="https://play2048.co/classic" rel="nofollow">https://play2048.co/classic</a><p>[4]: <a href="https://classic.play2048.co" rel="nofollow">https://classic.play2048.co</a>