Best of Show HN of Mar, 2025


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 2024 best of 2023 best of 2023 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: Factorio Learning Environment – Agents Build Factories

749 points | 209 comments | Mar 11, 2025 | by noddybear

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#2 Show HN: Seven39, a social media app that is only open for 3 hours every evening

735 points | 349 comments | Mar 11, 2025 | by mklyons

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#3 Show HN: Bayleaf – Building a low-profile wireless split keyboard

735 points | 247 comments | Mar 04, 2025 | by sgraz

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#4 Show HN: Nash, I made a standalone note with single HTML file

536 points | 143 comments | Mar 14, 2025 | by yevgenyhong

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#5 Show HN: I made a tool to port tweets to Bluesky mantaining their original date

524 points | 213 comments | Mar 18, 2025 | by nols05

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#6 Show HN: Time Portal – Get dropped into history, guess where you landed

497 points | 213 comments | Mar 12, 2025 | by samplank2

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#7 Show HN: I built a website for sharing drum patterns

495 points | 189 comments | Mar 23, 2025 | by wesz

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#8 Show HN: LinkedIn sucks, so I built a better one

470 points | 377 comments | Mar 23, 2025 | by fliellerjulian

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#9 Show HN: CodeTracer – A time-traveling debugger implemented in Nim and Rust

334 points | 52 comments | Mar 06, 2025 | by alehander42

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#10 Show HN: A personal YouTube frontend based on yt-dlp

319 points | 237 comments | Mar 15, 2025 | by modmodmod

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#11 Show HN: Physical Pomodoro Timer with ESP32 and e-paper screen

315 points | 68 comments | Mar 29, 2025 | by rukenshia

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#12 Show HN: My iOS app to practice sight reading (10 years in the App Store)

313 points | 131 comments | Mar 23, 2025 | by rooster117

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#13 Show HN: Berlin Swapfest – Electronics flea market

308 points | 67 comments | Mar 01, 2025 | by mirshko

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#14 Show HN: I built an app to get daily wisdom from Mr. Worldwide

302 points | 81 comments | Mar 09, 2025 | by garyreckon

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#15 Show HN: We built a Plug-in Home Battery for the 99.7% of us without Powerwalls

301 points | 480 comments | Mar 11, 2025 | by coleashman

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#16 Show HN: Open-Source DocumentAI with Ollama

295 points | 33 comments | Mar 08, 2025 | by Dontizi

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#17 Show HN: I'm a teacher and built an AI presentation tool

260 points | 106 comments | Mar 23, 2025 | by slidehero

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#18 Show HN: I built a modern Goodreads alternative

254 points | 211 comments | Mar 02, 2025 | by vasanthk1125

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#19 Show HN: "Git who" – A new CLI tool for industrial-scale Git blaming

252 points | 127 comments | Mar 18, 2025 | by weebst

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#20 Show HN: I made a live multiplayer Minesweeper game

242 points | 82 comments | Mar 18, 2025 | by bluelegacy

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#21 Show HN: Cascii – A portable ASCII diagram builder written in vanilla JavaScript

238 points | 53 comments | Mar 16, 2025 | by ftr1200

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#22 Show HN: WhatsApp MCP Server

229 points | 137 comments | Mar 31, 2025 | by lharries

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#23 Show HN: Learn where countries are on the world map with Spaced Repetition

217 points | 83 comments | Mar 17, 2025 | by blackbrokkoli

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#24 Show HN: Agents.json – OpenAPI Specification for LLMs

212 points | 69 comments | Mar 03, 2025 | by yompal

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#25 Show HN: OpenTimes – Free travel times between U.S. Census geographies

207 points | 50 comments | Mar 17, 2025 | by dfsnow

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#26 Show HN: Bubbles, a vanilla JavaScript web game

201 points | 75 comments | Mar 13, 2025 | by ehmorris

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#27 Show HN: Knowledge graph of restaurants and chefs, built using LLMs

201 points | 39 comments | Mar 03, 2025 | by theophilec

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#28 Show HN: A terminal emulator in pure PHP

196 points | 85 comments | Mar 21, 2025 | by aarondf

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#29 Show HN: Beating Pokemon Red with RL and <10M Parameters

183 points | 68 comments | Mar 05, 2025 | by drubs

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#30 Show HN: Torch Lens Maker – Differentiable Geometric Optics in PyTorch

179 points | 45 comments | Mar 21, 2025 | by fouronnes3

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#31 Show HN: Fork of Claude-code working with local and other LLM providers

177 points | 38 comments | Mar 04, 2025 | by npace12

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#32 Show HN: XPipe, a shell connection hub for SSH, Docker, K8s, VMs, and more

175 points | 80 comments | Mar 12, 2025 | by crschnick

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#33 Show HN: Krep a High-Performance String Search Utility Written in C

173 points | 74 comments | Mar 11, 2025 | by daviducolo

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#34 Show HN: Tangled – Git collaboration platform built on atproto

173 points | 15 comments | Mar 02, 2025 | by icy

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#35 Show HN: Codemcp – Claude Code for Claude Pro subscribers – ditch API bills

172 points | 36 comments | Mar 13, 2025 | by ezyang

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#36 Show HN: Leaflet.pub – a web app for creating and sharing rich documents

170 points | 60 comments | Mar 05, 2025 | by jpereira

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#37 Show HN: Cloud-Ready Postgres MCP Server

167 points | 79 comments | Mar 30, 2025 | by spennant

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#38 Show HN: Psychedelic animation generator; (p)art of your next trip

166 points | 61 comments | Mar 13, 2025 | by getToTheChopin

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#39 Show HN: Metacheck – preview how any link appears on social media and chat apps

165 points | 47 comments | Mar 11, 2025 | by talljohnson1234

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#40 Show HN: In-Browser Graph RAG with Kuzu-WASM and WebLLM

158 points | 29 comments | Mar 10, 2025 | by sdht0

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#41 Show HN: My high school team’s space probe

157 points | 35 comments | Mar 16, 2025 | by JohnOfOsgiliath

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#42 Show HN: I made a little puzzle game about a rogue chess knight

155 points | 57 comments | Mar 29, 2025 | by freetonik

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#43 Show HN: FastOpenAPI – automated docs for many Python frameworks

153 points | 77 comments | Mar 22, 2025 | by mr_Fatalyst

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#44 Show HN: Editable Games

142 points | 30 comments | Mar 10, 2025 | by sclerek

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#45 Show HN: We made an MCP server so Cursor can debug Node.js on its own

139 points | 72 comments | Mar 22, 2025 | by arthurgousset

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#46 Show HN: Evolving Agents Framework

139 points | 37 comments | Mar 09, 2025 | by matiasmolinas

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#47 Show HN: FlakeUI

138 points | 52 comments | Mar 03, 2025 | by tearflake

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#48 Show HN: 10 teams are racing to build a pivotal tracker replacement

130 points | 93 comments | Mar 16, 2025 | by jFriedensreich

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#49 Show HN: Shelgon: A Framework for Building Interactive REPL Shells in Rust

130 points | 25 comments | Mar 06, 2025 | by cat-whisperer

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#50 Show HN: Time travel debugging AI for more reliable vibe coding

129 points | 52 comments | Mar 04, 2025 | by bhackett

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#51 Show HN: Rust Vector and Quaternion Lib

128 points | 49 comments | Mar 06, 2025 | by the__alchemist

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#52 Show HN: Sonauto API – Generative music for developers

127 points | 157 comments | Mar 03, 2025 | by zaptrem

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#53 Show HN: Open-source, native audio turn detection model

126 points | 28 comments | Mar 06, 2025 | by kwindla

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#54 Show HN: Open-source Deep Research across workplace applications

125 points | 30 comments | Mar 03, 2025 | by yuhongsun

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#55 Show HN: I built a MCP server so Claude can play Minesweeper

123 points | 38 comments | Mar 20, 2025 | by tonypan

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#56 Show HN: An Almost Free, Open Source TURN Server

122 points | 52 comments | Mar 28, 2025 | by cookie_monsta

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#57 Show HN: Hexi – Modern header-only network binary serialisation for C++

118 points | 45 comments | Mar 28, 2025 | by Chaosvex

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#58 Show HN: I took over Painteresque, a 14 year old Objective-C app and rebuilt it

117 points | 25 comments | Mar 01, 2025 | by busymom0

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#59 Show HN: A difficult game to test your logic

112 points | 53 comments | Mar 24, 2025 | by CodeCrusader

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#60 Show HN: Appear as anyone in video calls like zoom or Google meets

110 points | 51 comments | Mar 29, 2025 | by michaelphi

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#61 Show HN: Cursor IDE now remembers your coding prefs using MCP

109 points | 39 comments | Mar 28, 2025 | by roseway4

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#62 Show HN Pianoboi – displays sheet music as you play your piano

109 points | 25 comments | Mar 28, 2025 | by bcowde

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#63 Show HN: A website that makes your text look cool anywhere online using Unicode

108 points | 53 comments | Mar 14, 2025 | by liquid99

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#64 Show HN: JavaScript PubSub in 163 Bytes

104 points | 36 comments | Mar 31, 2025 | by hmmokidk

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#65 Show HN: We made an MCP Server so Cursor can build things from REST API docs

102 points | 73 comments | Mar 24, 2025 | by goargp

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#66 Show HN: VSC – An open source 3D Rendering Engine in C++

101 points | 34 comments | Mar 12, 2025 | by NormalExisting

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#67 Show HN: My Attempt to Organize the World of AI Dev Tools

101 points | 30 comments | Mar 21, 2025 | by dan_voronov

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#68 Show HN: SafeHaven – A Minimal VPN Implementation in Go

99 points | 12 comments | Mar 02, 2025 | by kwakubiney

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#69 Show HN: I built a memory-safe web server in Rust

90 points | 76 comments | Mar 02, 2025 | by dorianniemiec

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#70 Show HN: A website for sharing the "Good, Bad, and Why"s of urban spaces

89 points | 20 comments | Mar 24, 2025 | by kappasan

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#71 Show HN: Recommendarr – AI Driven Recommendations Based on Sonarr/Radarr Media

88 points | 46 comments | Mar 02, 2025 | by fingerthieff

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#72 Show HN: Appstat – Process Monitor for Windows

86 points | 28 comments | Mar 04, 2025 | by pragmar

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#73 Show HN: I Built an iOS app to locate stray animals

85 points | 42 comments | Mar 17, 2025 | by Ic3creaM

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#74 Show HN: A bi-directional, persisted KV store that is faster than Redis

79 points | 75 comments | Mar 17, 2025 | by mehrant

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#75 Show HN: Daylight – track sunrise / sunset times in your terminal

79 points | 19 comments | Mar 09, 2025 | by jbreckmckye

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#76 Show HN: GuMCP – Open-source MCP servers, hosted for free

79 points | 18 comments | Mar 31, 2025 | by murb

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#77 Show HN: Fast Transition from Firefox to Librewolf

78 points | 49 comments | Mar 02, 2025 | by biomcgary

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#78 Show HN: I converted my notebook into a searchable database of IT keywords

78 points | 27 comments | Mar 18, 2025 | by jurajstefanic

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#79 Show HN: Robyn – “Batman Inspired” Python Web Framework Built with Rust

77 points | 58 comments | Mar 02, 2025 | by vednig

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#80 Show HN: I Built a Telegraph Simulator

77 points | 27 comments | Mar 04, 2025 | by leugim

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#81 Show HN: Web Audio Spring-Mass Synthesis

77 points | 17 comments | Mar 14, 2025 | by cochlear

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#82 Show HN: AudioNimbus – Steam Audio's immersive spatial audio, now in Rust

77 points | 7 comments | Mar 12, 2025 | by mxncmr

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#83 Show HN: We are building the next DocuSign

76 points | 103 comments | Mar 27, 2025 | by esaidm

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#84 Show HN: Fashion Shopping with Nearest Neighbors

76 points | 22 comments | Mar 15, 2025 | by unixpickle

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#85 Show HN: Open-Source Windows AI assistant that uses Word, Excel through COM

75 points | 22 comments | Mar 03, 2025 | by edmgood

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#86 Show HN: Minimalytics – a standalone minimal analytics app built on SQLite

74 points | 12 comments | Mar 20, 2025 | by nafey

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#87 Show HN: Program Explorer, a container playground

73 points | 10 comments | Mar 11, 2025 | by aconz2

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#88 Show HN: We made a photo search engine for homes for sale

71 points | 60 comments | Mar 17, 2025 | by travisleestreet

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#89 Show HN: I implemented Snake in a tmux config file

71 points | 6 comments | Mar 26, 2025 | by willhbr

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#90 Show HN: CodeVideo – Two years in the making to build an event-sourced IDE

69 points | 20 comments | Mar 14, 2025 | by fullstackchris

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#91 Show HN: EnkiTask: Lightweight Project Management for Freelancers

68 points | 48 comments | Mar 17, 2025 | by booper

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#92 Show HN: I made Confetti: a configuration language file format

67 points | 61 comments | Mar 31, 2025 | by hgs3

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#93 Show HN: Localscope–Limit scope of Python functions for reproducible execution

67 points | 31 comments | Mar 17, 2025 | by tillahoffmann

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#94 Show HN: Fingernotes – handwritten notes which become their own preview image

67 points | 20 comments | Mar 23, 2025 | by sumolessons

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#95 Show HN: I built didtheyghost.me, open-source tool for your next job search

66 points | 37 comments | Mar 08, 2025 | by dtgmzac

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#96 Show HN: AgentKit – JavaScript Alternative to OpenAI Agents SDK with Native MCP

64 points | 15 comments | Mar 20, 2025 | by tonyhb

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#97 Show HN: Searchable Vim Cheat Sheet with Favorites (Open-Source)

63 points | 29 comments | Mar 09, 2025 | by lil_csom

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#98 Show HN: Hyperbrowser MCP Server – Connect AI agents to the web through browsers

63 points | 26 comments | Mar 20, 2025 | by shrisukhani

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#99 Show HN: TypeLeap: LLM Powered Reactive Intent UI/UX

63 points | 23 comments | Mar 08, 2025 | by eadz

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#100 Show HN: I made a worldwide sexual life dashboard

62 points | 22 comments | Mar 19, 2025 | by superderevo

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andrey azimov by Andrey Azimov