Best of Show HN of Apr, 2026


best of all time best of today best of yesterday best of this week best of this month best of last month best of this year best of 2025 best of 2024 best of 2024 yc w26 yc s25 yc w25 yc s24 yc w24 yc s23 yc w23 yc s22 yc w22 yc s21 yc w21 yc s20 yc w20 yc s19 yc w19 yc s18 yc w18 yc all-time 3d algorithms animation android [ai] artificial-intelligence api augmented-reality big data bitcoin blockchain book bootstrap bot css c chart chess chrome extension cli command line compiler crypto covid-19 cryptography data deep learning elexir ether excel framework game git go html ios iphone java js javascript jobs kubernetes learn linux lisp mac machine-learning most successful neural net nft node optimisation parser performance privacy python raspberry pi react retro review my ruby rust saas scraper security sql tensor flow terminal travel virtual reality visualisation vue windows web3 young talents
#1 Show HN: A game where you build a GPU

961 points | 187 comments | Apr 04, 2026 | by Jaso1024

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#2 Show HN: I built a tiny LLM to demystify how language models work

910 points | 134 comments | Apr 06, 2026 | by armanified

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#3 Show HN: Brutalist Concrete Laptop Stand (2024)

786 points | 236 comments | Apr 07, 2026 | by sam-bee

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#4 Show HN: I built a frontpage for personal blogs

782 points | 195 comments | Apr 03, 2026 | by ramkarthikk

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#5 Show HN: Apfel – The free AI already on your Mac

740 points | 158 comments | Apr 03, 2026 | by franze

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#6 Show HN: Is Hormuz open yet?

478 points | 209 comments | Apr 08, 2026 | by anonfunction

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#7 Show HN: Ghost Pepper – Local hold-to-talk speech-to-text for macOS

466 points | 200 comments | Apr 06, 2026 | by MattHart88

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#8 Show HN: I made a YouTube search form with advanced filters

323 points | 202 comments | Apr 06, 2026 | by nevernothing

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#9 Show HN: GovAuctions lets you browse government auctions at once

318 points | 90 comments | Apr 06, 2026 | by player_piano

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#10 Show HN: Real-time AI (audio/video in, voice out) on an M3 Pro with Gemma E2B

292 points | 36 comments | Apr 05, 2026 | by karimf

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#11 Show HN: An interactive map of Tolkien's Middle-earth

290 points | 69 comments | Apr 07, 2026 | by frasermarlow

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#12 Show HN: Stop paying for Dropbox/Google Drive, use your own S3 bucket instead

251 points | 206 comments | Apr 07, 2026 | by Zm44

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#13 Show HN: Pardonned.com – A searchable database of US Pardons

242 points | 83 comments | Apr 11, 2026 | by vidluther

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#14 Show HN: Gemma 4 Multimodal Fine-Tuner for Apple Silicon

231 points | 28 comments | Apr 07, 2026 | by MediaSquirrel

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#15 Show HN: sllm – Split a GPU node with other developers, unlimited tokens

187 points | 103 comments | Apr 04, 2026 | by jrandolf

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#16 Show HN: M. C. Escher spiral in WebGL inspired by 3Blue1Brown

176 points | 32 comments | Apr 04, 2026 | by laszlokorte

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#17 Show HN: I built a Cargo-like build tool for C/C++

168 points | 167 comments | Apr 09, 2026 | by randerson_112

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#18 Show HN: TurboQuant-WASM – Google's vector quantization in the browser

165 points | 7 comments | Apr 04, 2026 | by teamchong

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#19 Show HN: CSS Studio. Design by hand, code by agent

164 points | 106 comments | Apr 09, 2026 | by SirHound

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#20 Show HN: A cartographer's attempt to realistically map Tolkien's world

163 points | 31 comments | Apr 07, 2026 | by intofarlands

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#21 Show HN: I made open source, zero power PCB hackathon badges

158 points | 18 comments | Apr 04, 2026 | by kaipereira

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#22 Show HN: Gemma Gem – AI model embedded in a browser – no API keys, no cloud

155 points | 21 comments | Apr 06, 2026 | by ikessler

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#23 Show HN: Made a little Artemis II tracker

154 points | 61 comments | Apr 02, 2026 | by codingmoh

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#24 Show HN: Dull – Instagram Without Reels, YouTube Without Shorts (iOS)

153 points | 123 comments | Apr 01, 2026 | by kasparnoor

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#25 Show HN: 41 years sea surface temperature anomalies

147 points | 71 comments | Apr 09, 2026 | by willmeyers

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Don't miss when the next Dropbox or Stripe launches



#26 Show HN: Orange Juice – Small UX improvements that make HN easier to read

144 points | 157 comments | Apr 08, 2026 | by latchkey

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#27 Show HN: FluidCAD – Parametric CAD with JavaScript

139 points | 33 comments | Apr 10, 2026 | by maouida

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#28 Show HN: Marimo pair – Reactive Python notebooks as environments for agents

134 points | 34 comments | Apr 07, 2026 | by manzt

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#29 Show HN: Hippo, biologically inspired memory for AI agents

128 points | 29 comments | Apr 06, 2026 | by kitfunso

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#30 Show HN: Tusk for macOS and Gnome

120 points | 50 comments | Apr 04, 2026 | by factorialboy

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#31 Show HN: Contrapunk – Real-time counterpoint harmony from guitar input

118 points | 54 comments | Apr 05, 2026 | by waveywaves

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#32 Show HN: I pipe free sports streams into Jellyfin – no ads, just HLS

117 points | 36 comments | Apr 08, 2026 | by pruz

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#33 Show HN: I built a DNS resolver from scratch in Rust – no DNS libraries

115 points | 67 comments | Apr 02, 2026 | by rdme

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#34 Show HN: Anos – a hand-written ~100KiB microkernel for x86-64 and RISC-V

115 points | 32 comments | Apr 04, 2026 | by noone_youknow

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#35 Show HN: Moon simulator game, ray-casting

111 points | 25 comments | Apr 06, 2026 | by JKCalhoun

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#36 Show HN: We built a camera only robot vacuum for less than $300 (well almost)

108 points | 55 comments | Apr 06, 2026 | by indraneelpatil

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#37 Show HN: TinyOS – A minimalist RTOS for Cortex-M written in C

102 points | 43 comments | Apr 03, 2026 | by hpscript

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#38 Show HN: Modo – I built an open-source alternative to Kiro, Cursor, and Windsurf

101 points | 28 comments | Apr 05, 2026 | by mohshomis

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#39 Show HN: Pion/handoff – Move WebRTC out of browser and into Go

101 points | 17 comments | Apr 07, 2026 | by Sean-Der

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#40 Show HN: Sycamore – next gen Rust web UI library using fine-grained reactivity

95 points | 74 comments | Apr 01, 2026 | by lukechu10

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#41 Show HN: Travel Hacking Toolkit – Points search and trip planning with AI

95 points | 41 comments | Apr 04, 2026 | by borski

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#42 Show HN: NASA Artemis II Mission Timeline Tracker

93 points | 17 comments | Apr 02, 2026 | by AustinDev

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#43 Show HN: Flight-Viz – 10K flights on a 3D globe in 3.5MB of Rust+WASM

88 points | 45 comments | Apr 01, 2026 | by coolwulf

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#44 Show HN: OsintRadar – Curated directory for osint tools

83 points | 9 comments | Apr 05, 2026 | by lexalizer

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#45 Show HN: A WYSIWYG word processor in Python

77 points | 34 comments | Apr 10, 2026 | by chrisecker

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#46 Show HN: We fingerprinted 178 AI models' writing styles and similarity clusters

77 points | 23 comments | Apr 08, 2026 | by nuancedev

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#47 Show HN: Real-time dashboard for Claude Code agent teams

76 points | 28 comments | Apr 01, 2026 | by simple10

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#48 Show HN: TTF-DOOM – A raycaster running inside TrueType font hinting

67 points | 12 comments | Apr 06, 2026 | by 4RH1T3CT0R

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#49 Show HN: A (marginally) useful x86-64 ELF executable in 301 bytes

65 points | 19 comments | Apr 06, 2026 | by meribold

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#50 Show HN: Eve – Managed OpenClaw for work

64 points | 34 comments | Apr 10, 2026 | by zachdive

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#51 Show HN: Baton – A desktop app for developing with AI agents

62 points | 52 comments | Apr 01, 2026 | by tordrt

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#52 Show HN: Go-Bt: Minimalist Behavior Trees for Go

62 points | 12 comments | Apr 08, 2026 | by rvitorper

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#53 Show HN: Keeper – embedded secret store for Go (help me break it)

61 points | 32 comments | Apr 10, 2026 | by babawere

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#54 Show HN: Druids – Build your own software factory

61 points | 13 comments | Apr 08, 2026 | by etherio

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#55 Show HN: Skrun – Deploy any agent skill as an API

61 points | 12 comments | Apr 08, 2026 | by frizull

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#56 Show HN: Unicode Steganography

57 points | 14 comments | Apr 07, 2026 | by PatrickVuscan

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#57 Show HN: I built a navigation app that displays weather along the route

55 points | 25 comments | Apr 06, 2026 | by vkatluri

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#58 Show HN: ctx – an Agentic Development Environment (ADE)

53 points | 53 comments | Apr 03, 2026 | by luca-ctx

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#59 Show HN: Weird Clocks

53 points | 20 comments | Apr 06, 2026 | by vunderba

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#60 Show HN: I built a small app for FSI German Course

53 points | 15 comments | Apr 02, 2026 | by syedmsawaid

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#61 Show HN: TUI-use: Let AI agents control interactive terminal programs

52 points | 37 comments | Apr 08, 2026 | by dreamsome

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#62 Show HN: Explore the Silk Roads through an interactive map

47 points | 6 comments | Apr 08, 2026 | by intofarlands

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#63 Show HN: BAREmail – minimalist Gmail client for bad WiFi

44 points | 44 comments | Apr 08, 2026 | by Virgo_matt

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#64 Show HN: Hormuz Havoc, a satirical game that got overrun by AI bots in 24 hours

44 points | 12 comments | Apr 11, 2026 | by kupadapuku

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#65 Show HN: Output.ai - OSS framework we extracted from 500+ production AI agents

40 points | 11 comments | Apr 07, 2026 | by bnchrch

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#66 Show HN: Ismcpdead.com – Live dashboard tracking MCP adoption and sentiment

39 points | 23 comments | Apr 03, 2026 | by sagirodin

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#67 Show HN: A P2P messenger with dual network modes (Fast and Tor)

39 points | 23 comments | Apr 02, 2026 | by Realman78

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#68 Show HN: I tested 15 free AI models at building real software on a $25/year VPS

37 points | 7 comments | Apr 02, 2026 | by j0rg3

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#69 Show HN: Guruka.com – free guided mediations. No signup, private, works offline

36 points | 16 comments | Apr 09, 2026 | by eummm

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#70 Show HN: Enter an Instagram/TikTok handle, get a data-backed price for collab

36 points | 11 comments | Apr 05, 2026 | by bozkan

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#71 Show HN: mailtrim – find what's actually filling your Gmail inbox

34 points | 22 comments | Apr 05, 2026 | by chevuru

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#72 Show HN: Rust based eBook library for Python, with MIT license

33 points | 3 comments | Apr 09, 2026 | by larry-the-agent

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#73 Show HN: AdaShape-3D modeler for intuitive 3D printing parts / Windows 11

32 points | 31 comments | Apr 04, 2026 | by fsloth

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#74 Show HN: I Built Paul Graham's Intellectual Captcha Idea

29 points | 45 comments | Apr 06, 2026 | by nowflux

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#75 Show HN: QVAC SDK, a universal JavaScript SDK for building local AI applications

29 points | 13 comments | Apr 09, 2026 | by qvac

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#76 Show HN: Finalrun – Spec-driven testing using English and vision for mobile apps

28 points | 12 comments | Apr 07, 2026 | by ashish004

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#77 Show HN: Tired of logic in useEffect, I built a class-based React state manager

27 points | 51 comments | Apr 08, 2026 | by thalesfp

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#78 Show HN: Docking – Extensible Linux dock in Python

26 points | 19 comments | Apr 04, 2026 | by edumucelli

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#79 Show HN: Minimal Brain Teaser Web Game (Handcrafted, No AI)

26 points | 14 comments | Apr 03, 2026 | by arttaboi

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#80 Show HN: Mtproto.zig – High-performance Telegram proxy with DPI evasion

24 points | 15 comments | Apr 03, 2026 | by slp3r

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#81 Show HN: DecisionNode – shared structured memory for all AI coding tools via MCP

23 points | 4 comments | Apr 10, 2026 | by AmmarSaleh50

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#82 Show HN: Do All the Things

22 points | 6 comments | Apr 10, 2026 | by brainbun

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#83 Show HN: Mdarena – Benchmark your Claude.md against your own PRs

22 points | 4 comments | Apr 05, 2026 | by hudsongr

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#84 Show HN: SyNumpy – a Header only C++17 library for working with NumPy Arrays

22 points | 4 comments | Apr 02, 2026 | by symisc_devel

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#85 Show HN: I built a 2-min quiz that shows you how bad you are at estimating

20 points | 66 comments | Apr 06, 2026 | by convexly

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#86 Show HN: Pluck – Copy any UI from any website, paste it into AI coding tools

20 points | 17 comments | Apr 04, 2026 | by bring-shrubbery

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#87 Show HN: I just built a MCP Server that connects Claude to all your wearables

19 points | 13 comments | Apr 06, 2026 | by anton_salcher

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#88 Show HN: We open-sourced our content writing workflow as a Claude Code skill

18 points | 8 comments | Apr 02, 2026 | by arximughal

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#89 Show HN: Ownscribe – local meeting transcription, summarization and search

18 points | 0 comments | Apr 04, 2026 | by paberr

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#90 Show HN: I replaced Google Analytics with my own tool – no cookies, <1KB script

17 points | 11 comments | Apr 06, 2026 | by VictorChanet

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#91 Show HN: We're building an AI hedge fund

16 points | 36 comments | Apr 03, 2026 | by rallies

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#92 Show HN: Cabinet – Kb+LLM (Like Paperclip+Obsidian)

16 points | 11 comments | Apr 05, 2026 | by Hilash

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#93 Show HN: Adentris (YC P25) – Find mistakes in your medical records

16 points | 4 comments | Apr 02, 2026 | by digitaltzar

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#94 Show HN: Zoneless – Open-source Stripe Connect clone with $0.002 fees using USDC

15 points | 7 comments | Apr 09, 2026 | by tinyprojects

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#95 Show HN: Mdpdf a 2k line C CLI to convert Markdown to tiny PDFs

15 points | 4 comments | Apr 09, 2026 | by bastscho

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#96 Show HN: SideX – VS Code rebuilt on Tauri instead of Electron (96% smaller)

15 points | 2 comments | Apr 02, 2026 | by KendallCBooker

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#97 Show HN: rmBug – audited database access for humans and agents

14 points | 6 comments | Apr 01, 2026 | by mdjanic

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#98 Show HN: Control your X/Twitter feed using a small on-device LLM

14 points | 3 comments | Apr 09, 2026 | by kanjun

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#99 Show HN: Dev Personality Test

14 points | 3 comments | Apr 04, 2026 | by 4m1rk

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#100 Show HN: 500k+ events/sec transformations for ClickHouse ingestion

13 points | 4 comments | Apr 08, 2026 | by super_ar

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andrey azimov by Andrey Azimov