frontpage.
newsnewestaskshowjobs

Made with ♥ by @iamnishanth

Open Source @Github

fp.

Show HN: Marmot – Single-binary data catalog (no Kafka, no Elasticsearch)

https://github.com/marmotdata/marmot
43•charlie-haley•1h ago•7 comments

Show HN: RunMat – runtime with auto CPU/GPU routing for dense math

https://github.com/runmat-org/runmat
9•nallana•1h ago•2 comments

Show HN: Open-source full-stack starter built on TanStack Start

https://github.com/BearStudio/start-ui-web
6•ivandalmet•47m ago•1 comments

Show HN: A simple Markdown note app with templates and PDF support

https://www.panto.app
3•peterwoodman•1h ago•2 comments

Show HN: CoThou – Control what AI search engines say about your business

https://cothou.com/
2•MartyD•1h ago•0 comments

Show HN: Webclone.js – A simple tool to clone websites

https://github.com/jademsee/webclone
15•jadesee•11h ago•3 comments

Show HN: I wrote a book for software engineers, based on 11 years at Uber

https://rfonti.gumroad.com/l/playbook
4•ten-fold•1h ago•2 comments

Show HN: RFC Hub

https://rfchub.app/
27•tlhunter•23h ago•9 comments

Show HN: Doomscrolling Research Papers

https://www.openpaperdigest.com/
10•davailan•6h ago•5 comments

Show HN: Elf – A CLI Helper for Advent of Code

https://github.com/cak/elf
3•cak•6h ago•3 comments

Show HN: An AI zettelkasten that extracts ideas from articles, videos, and PDFs

https://github.com/schoblaska/jargon
34•schoblaska•22h ago•7 comments

Show HN: Visual, local-first data tool

https://columns.dev/
3•rafferty97•6h ago•1 comments

Show HN: I want food – Simple swipe based restaurant discovery app

https://iwant.food/
4•b44rd•7h ago•2 comments

Show HN: I was reintroduced to computers: Raspberry Pi

https://airoboticist.blog/2025/12/01/i-was-reintroduced-to-computers-raspberry-pi/
4•observer2022•7h ago•1 comments

Show HN: Boing

https://boing.greg.technology/
765•gregsadetsky•2d ago•144 comments

Show HN: FFmpeg Engineering Handbook

https://github.com/endcycles/ffmpeg-engineering-handbook
14•endcycles•1d ago•0 comments

Show HN: Real-time system that tracks how news spreads across 200k websites

https://yandori.io/news-flow/
251•antiochIst•6d ago•70 comments

Show HN: Nano PDF – A CLI Tool to Edit PDFs with Gemini's Nano Banana

https://github.com/gavrielc/Nano-PDF
171•GavCo•2d ago•39 comments

Show HN: Fixing Google Nano Banana Pixel Art with Rust

https://github.com/Hugo-Dz/spritefusion-pixel-snapper
187•HugoDz•6d ago•34 comments

Show HN: Explicode – Write Markdown in code comments

2•ben8888•12h ago•0 comments

Show HN: Watsn.ai – Scarily accurate lie detector

https://watsn.ai/
3•flx1012•13h ago•2 comments

Show HN: NeurIPS 2025 Poster Navigator

https://neurips2025.tiptreesystems.com/
3•martincsweiss•15h ago•0 comments

Show HN: KiDoom – Running DOOM on PCB Traces

https://www.mikeayles.com/#kidoom
361•mikeayles•6d ago•49 comments

Show HN: Net RazorConsole – Build Interactive TUI with Razor and Spectre.Console

https://razorconsole.github.io/RazorConsole/
3•BigBigMiao•15h ago•0 comments

Show HN: Furnace – the ultimate chiptune music tracker

15•hilti•1d ago•0 comments

Show HN: Glasses to detect smart-glasses that have cameras

https://github.com/NullPxl/banrays
503•nullpxl•4d ago•193 comments

Show HN: My pushback against ANPR carparks in the UK

https://www.getstung.io/
2•keooodev•19h ago•0 comments

Show HN: Identifiy test coverage gaps in your Go projects

https://github.com/LeanerCloud/testvet
8•alien_•1d ago•1 comments

Show HN: Cm-colors –I got tired of manually fixing wcag contrast,so I made this

https://github.com/comfort-mode-toolkit/cm-colors
5•lalithaar•20h ago•0 comments

Show HN: An LLM-Powered Tool to Catch PCB Schematic Mistakes

https://netlist.io/
54•wafflesfreak•3d ago•29 comments
Open in hackernews

Show HN: Elf – A CLI Helper for Advent of Code

https://github.com/cak/elf
3•cak•6h ago
I built a CLI tool called elf to streamline Advent of Code workflows. It removes a lot of the repetitive steps around fetching inputs, submitting answers safely, and checking private leaderboards.

The tool focuses on: - Input fetching with caching (no repeated downloads, works offline) - Safe answer submissions with guardrails to prevent duplicate or invalid guesses - Private leaderboard viewer (table or JSON) - Status calendar and guess history viewer - Optional Python API for scripting or automation

It’s built with Typer, httpx, Pydantic, and Rich, and aims to be clean, predictable, and easy to extend.

Repo: https://github.com/cak/elf

PyPI: https://pypi.org/project/elf/

Feedback and questions are welcome.

Comments

cak•6h ago
Happy to answer any questions about design choices, caching strategy, the guardrails for safe submissions, or anything else. If anyone uses AoC in a team or automation setup, I’m especially interested in what features would help.
youchen_•6h ago
This looks like a really useful tool for Advent of Code! The caching feature and offline support are great additions. Having a clean CLI interface makes the workflow so much smoother. Thanks for sharing!
cak•5h ago
Thanks! Caching around inputs and submissions was a priority to keep the workflow fast and predictable. Happy to hear any feedback if you try it out. Really appreciate it, and happy puzzle solving!