Show HN: Kuvasz – an open-source uptime and SSL monitoring service

10 csirkezuza 0 7/4/2025, 12:34:54 PM kuvasz-uptime.dev ↗

A few months ago I took out my side project - an uptime & SSL monitoring service - from the drawer. I've decided to give it a new life and completely overhauled it, added a lot of new feature, and most importantly, a UI.

Highlights

- configurable uptime & SSL monitoring

- Telegram, Slack, PagerDuty & E-mail notifications (more to come!)

- fully-fledged REST API

- a responsive, modern & fast UI

- monitors are optionally configurable via a single YAML file, or you can choose to use either the UI or the API to maintain them

- Cloud-native, distributed as amd64 and arm64 images

- Only one dependency: a PostgreSQL database to connect to

- Extensive examples in the docs

- stable memory usage (max ~360MB) & great performance

It's written in Kotlin, under the hood it uses Micronaut with Netty, jOOQ, and PostgreSQL, and the server-side-rendered UI is built with kotlinx.html, Alpine.js, and htmx.

It's called Kuvasz (pronounce as [ˈkuvɒs]), and you can find the repository here: https://github.com/kuvasz-uptime/kuvasz

And the website with the extensive documentation here: https://kuvasz-uptime.dev

Air Pollution May Contribute to Development of Lung Cancer in Never-Smokers (today.ucsd.edu)

Mini NASes marry NVMe to Intel's efficient chip (jeffgeerling.com)

How to Incapacitate Google Tag Manager and Why You Should (2022) (backlit.neocities.org)

The story behind Caesar salad (nationalgeographic.com)

EverQuest (filfre.net)

Why I left my tech job to work on chronic pain (sailhealth.substack.com)

Show HN: AirBending – hand gesture based macOS app MIDI controller (nanassound.com)

Kepler.gl (kepler.gl)

Compression Dictionary Transport (developer.mozilla.org)

Show HN: I AI-coded a tower defense game and documented the whole process (github.com)

Larry (cat) (en.wikipedia.org)

Writing a Game Boy Emulator in OCaml (linoscope.github.io)

ChatGPT creates phisher's paradise by serving the wrong URLs for major companies (theregister.com)

UpCodes (YC S17) is hiring a Head of Ops to automate construction compliance (up.codes)

Bcachefs may be headed out of the kernel (lwn.net)

Gremllm (github.com)

Sleeping beauty Bitcoin wallets wake up after 14 years to the tune of $2B (marketwatch.com)

Is an Intel N100 or N150 a better value than a Raspberry Pi? (jeffgeerling.com)

The Novelty of the Arpanet (twobithistory.org)

Wind Knitting Factory (merelkarhof.nl)

``Free as Air, Free as Water, Free as Knowledge'' (1992) (bactra.org)

Can Large Language Models Play Text Games Well? (arxiv.org)

Lens: Lenses, Folds and Traversals (hackage.haskell.org)

Show HN: BunkerWeb – the open-source and cloud-native WAF (docs.bunkerweb.io)

Zig breaking change – initial Writergate (github.com)

Rust and WASM for Form Validation (sebastian.lauwe.rs)

OpenDrop – electro-wetting technology to control small droplets of liquids (gaudishop.ch)

Killer whales groom each other with pieces of kelp (science.org)

Logging Shell Commands in BusyBox? Yes, You Can Now (carminatialessandro.blogspot.com)

Show HN: A cross-platform terminal emulator written in Java (github.com)

In a milestone for Manhattan, a pair of coyotes has made Central Park their home (smithsonianmag.com)

America Is Killing Its Chance to Find Alien Life (theatlantic.com)

LLM-assisted writing in biomedical publications through excess vocabulary (science.org)

DRM Panic QR code generator (rust-for-linux.com)

Eight dormant Satoshi-era Bitcoin wallets reactivated after 14 yrs (twitter.com)

Serving 200M requests per day with a CGI-bin (jacob.gold)

Show HN: Fast Thermodynamic Calculations in Python (dlr-institute-of-future-fuels.github.io)

Launch HN: K-Scale Labs (YC W24) – Open-Source Humanoid Robots

Ask HN: How did Soham Parekh get so many jobs?

phkmalloc (phk.freebsd.dk)

Raphael discovery emerges from Vatican museum restoration (news.artnet.com)

LooksMapping (looksmapping.com)

Context Engineering for Agents (rlancemartin.github.io)

A Rust-TypeScript integration (github.com)

Our Fullstack Architecture: Eta, Htmx, and Lit (lorenstew.art)

Introducing tmux-rs (richardscollin.github.io)

My open source project was relicensed by a YC company [license updated] (twitter.com)

Major reversal in ocean circulation detected in the Southern Ocean (icm.csic.es)

How AI on Microcontrollers Works: Operators and Kernels (danielmangum.com)

Caching is an abstraction, not an optimization (buttondown.com)

Show HN: Kuvasz – an open-source uptime and SSL monitoring service

Comments (0)