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

964 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

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

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

786 points | 239 comments | Apr 07, 2026 | by sam-bee

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

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

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

743 points | 157 comments | Apr 03, 2026 | by franze

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#6 Show HN: boringBar – a taskbar-style dock replacement for macOS

520 points | 307 comments | Apr 12, 2026 | by a-ve

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

501 points | 276 comments | Apr 11, 2026 | by vidluther

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#8 Show HN: Smol machines – subsecond coldstart, portable virtual machines

490 points | 147 comments | Apr 17, 2026 | by binsquare

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#9 Show HN: Is Hormuz open yet?

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

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

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

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

325 points | 204 comments | Apr 06, 2026 | by nevernothing

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

319 points | 91 comments | Apr 06, 2026 | by player_piano

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#13 Show HN: I made a calculator that works over disjoint sets of intervals

310 points | 53 comments | Apr 18, 2026 | by fouronnes3

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

298 points | 38 comments | Apr 05, 2026 | by karimf

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

291 points | 70 comments | Apr 07, 2026 | by frasermarlow

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#16 Show HN: PanicLock – Close your MacBook lid disable TouchID –> password unlock

258 points | 114 comments | Apr 17, 2026 | by seanieb

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

252 points | 207 comments | Apr 07, 2026 | by Zm44

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#18 Show HN: Oberon System 3 runs natively on Raspberry Pi 3 (with ready SD card)

244 points | 113 comments | Apr 12, 2026 | by Rochus

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

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

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#20 Show HN: Run TRELLIS.2 Image-to-3D generation natively on Apple Silicon

194 points | 34 comments | Apr 20, 2026 | by shivampkumar

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#21 Show HN: Every CEO and CFO change at US public companies, live from SEC

191 points | 64 comments | Apr 15, 2026 | by porsche959

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#22 Show HN: I built a social media management tool in 3 weeks with Claude and Codex

189 points | 131 comments | Apr 13, 2026 | by JanSchu

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

188 points | 104 comments | Apr 04, 2026 | by jrandolf

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

177 points | 169 comments | Apr 09, 2026 | by randerson_112

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#25 Show HN: Ithihāsas – a character explorer for Hindu epics, built in a few hours

176 points | 45 comments | Apr 13, 2026 | by cvrajeesh

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Don't miss when the next Dropbox or Stripe launches



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

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

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

175 points | 107 comments | Apr 09, 2026 | by SirHound

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

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

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#29 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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#30 Show HN: FluidCAD – Parametric CAD with JavaScript

160 points | 38 comments | Apr 10, 2026 | by maouida

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#31 Show HN: MacMind – A transformer neural network in HyperCard on a 1989 Macintosh

159 points | 42 comments | Apr 16, 2026 | by hammer32

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

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

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

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

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#34 Show HN: Shader Lab, like Photoshop but for shaders

155 points | 45 comments | Apr 16, 2026 | by ragojose

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#35 Show HN: Made a little Artemis II tracker

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

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

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

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#37 Show HN: Prompt-to-Excalidraw demo with Gemma 4 E2B in the browser (3.1GB)

152 points | 61 comments | Apr 19, 2026 | by teamchong

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#38 Show HN: LangAlpha – what if Claude Code was built for Wall Street?

148 points | 55 comments | Apr 14, 2026 | by zc2610

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

147 points | 158 comments | Apr 08, 2026 | by latchkey

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#40 Show HN: 41 years sea surface temperature anomalies

147 points | 73 comments | Apr 09, 2026 | by willmeyers

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#41 Show HN: MDV – a Markdown superset for docs, dashboards, and slides with data

146 points | 53 comments | Apr 18, 2026 | by drasim

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

140 points | 35 comments | Apr 07, 2026 | by manzt

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#43 Show HN: Libretto – Making AI browser automations deterministic

133 points | 57 comments | Apr 15, 2026 | by muchael

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#44 Show HN: Stage – Putting humans back in control of code review

130 points | 110 comments | Apr 16, 2026 | by cpan22

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

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

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#46 Show HN: Faceoff – A terminal UI for following NHL games

124 points | 41 comments | Apr 19, 2026 | by vcf

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#47 Show HN: Tusk for macOS and Gnome

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

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#48 Show HN: Claudraband – Claude Code for the Power User

120 points | 44 comments | Apr 12, 2026 | by halfwhey

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

120 points | 37 comments | Apr 08, 2026 | by pruz

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#50 Show HN: SPICE simulation → oscilloscope → verification with Claude Code

120 points | 34 comments | Apr 17, 2026 | by _fizz_buzz_

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

118 points | 56 comments | Apr 05, 2026 | by waveywaves

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

115 points | 68 comments | Apr 02, 2026 | by rdme

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#53 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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#54 Show HN: Moon simulator game, ray-casting

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

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#55 Show HN: CodeBurn – Analyze Claude Code token usage by task

110 points | 26 comments | Apr 13, 2026 | by agentseal

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

109 points | 56 comments | Apr 06, 2026 | by indraneelpatil

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

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

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#58 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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#59 Show HN: Flight-Viz – 10K flights on a 3D globe in 3.5MB of Rust+WASM

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

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#60 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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#61 Show HN: Alien – Self-hosting with remote management (written in Rust)

99 points | 39 comments | Apr 20, 2026 | by alongub

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

95 points | 75 comments | Apr 01, 2026 | by lukechu10

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#63 Show HN: Plain – The full-stack Python framework designed for humans and agents

95 points | 51 comments | Apr 14, 2026 | by focom

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#64 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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#65 Show HN: NASA Artemis II Mission Timeline Tracker

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

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#66 Show HN: SmallDocs – Markdown without the frustrations

91 points | 49 comments | Apr 15, 2026 | by FailMore

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#67 Show HN: A WYSIWYG word processor in Python

91 points | 38 comments | Apr 10, 2026 | by chrisecker

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

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

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

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

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

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

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#71 Show HN: Marky – A lightweight Markdown viewer for agentic coding

75 points | 38 comments | Apr 16, 2026 | by GRVYDEV

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#72 Show HN: Eve – Managed OpenClaw for work

72 points | 41 comments | Apr 10, 2026 | by zachdive

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

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

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

65 points | 21 comments | Apr 06, 2026 | by meribold

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

64 points | 16 comments | Apr 08, 2026 | by etherio

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

63 points | 33 comments | Apr 10, 2026 | by babawere

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

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

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

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

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

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

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#80 Show HN: Unicode Steganography

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

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#81 Show HN: Home Memory – A local DB of my house, down to cables and pipes

56 points | 13 comments | Apr 16, 2026 | by impactjo

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

55 points | 28 comments | Apr 06, 2026 | by vkatluri

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

54 points | 17 comments | Apr 11, 2026 | by kupadapuku

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

53 points | 52 comments | Apr 03, 2026 | by luca-ctx

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#85 Show HN: Weird Clocks

53 points | 19 comments | Apr 06, 2026 | by vunderba

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

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

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

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

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#88 Show HN: A lightweight way to make agents talk without paying for API usage

51 points | 11 comments | Apr 20, 2026 | by juanpabloaj

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#89 Show HN: A memory database that forgets, consolidates, and detects contradiction

47 points | 33 comments | Apr 14, 2026 | by pranabsarkar

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#90 Show HN: Kelet – Root Cause Analysis agent for your LLM apps

47 points | 24 comments | Apr 14, 2026 | by almogbaku

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

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

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#92 Show HN: A working reference implementation of context engineering

45 points | 15 comments | Apr 17, 2026 | by linsys

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

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

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#94 Show HN: AI Subroutines – Run automation scripts inside your browser tab

44 points | 17 comments | Apr 17, 2026 | by arjunchint

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#95 Show HN: Waffle – Native macOS terminal that auto-tiles sessions into a grid

40 points | 23 comments | Apr 11, 2026 | by olleeolleeollee

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#96 Show HN: Hiraeth – AWS Emulator

40 points | 13 comments | Apr 16, 2026 | by ozarkerD

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#97 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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#98 Show HN: Gave Claude a casino bankroll – it gambles till it's too broke to think

40 points | 10 comments | Apr 16, 2026 | by mackbrowne

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

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

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#100 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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andrey azimov by Andrey Azimov