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Show HN: I visualized the entire history of Citi Bike in the browser

https://bikemap.nyc/
49•freemanjiang•7h ago•20 comments

Show HN: I built a "Do not disturb" Device for my home office

https://apoorv.page/blogs/over-engineered-dnd
71•quacky_batak•4d ago•35 comments

Show HN: An LLM response cache that's aware of dynamic data

https://blog.butter.dev/on-automatic-template-induction-for-response-caching
12•raymondtana•5h ago•1 comments

Show HN: Free and local browser tool for designing gear models for 3D printing

https://gears.dmtrkovalenko.dev
38•neogoose•17h ago•10 comments

Show HN: A to Z – A word game I built from a childhood road trip memory

https://a26z.fun/
9•jackhulbert•6h ago•6 comments

Show HN: SMTP Tunnel – A SOCKS5 proxy disguised as email traffic to bypass DPI

https://github.com/x011/smtp-tunnel-proxy
126•lobito25•1d ago•43 comments

Show HN: KeelTest – AI-driven VS Code unit test generator with bug discovery

https://keelcode.dev/keeltest
26•bulba4aur•12h ago•10 comments

Show HN: Kerns – A Continuous Research Workspace

https://www.kerns.ai/
4•kanodiaayush•3h ago•0 comments

Show HN: Comet MCP – Give Claude Code a browser that can click

https://github.com/hanzili/comet-mcp
25•hanzili•4d ago•26 comments

Show HN: VaultSandbox – Test your real MailGun/SES/etc. integration

https://vaultsandbox.com/
52•vaultsandbox•1d ago•9 comments

Show HN: Flatagents: State machine orchestration with stateless LLM agents

https://github.com/memgrafter/flatagents
2•beacon294•4h ago•1 comments

Show HN: Tylax – A bidirectional LaTeX to Typst converter in Rust

https://github.com/scipenai/tylax
18•democat•10h ago•2 comments

Show HN: Mantic.sh – A structural code search engine for AI agents

https://github.com/marcoaapfortes/Mantic.sh
74•marcoaapfortes•1d ago•34 comments

Show HN: Tool for Testing MCP Servers

https://www.mcp-workbench.ai/
2•opiniateddev•5h ago•0 comments

Show HN: 48-digit prime numbers every git commit

https://textonly.github.io/git-prime/
66•keepamovin•6d ago•52 comments

Show HN: bikemap.nyc – visualization of the entire history of Citi Bike

https://github.com/freeman-jiang/bikemap.nyc
6•freemanjiang•5h ago•3 comments

Show HN: Game Boy Release Timelines

https://gameboyessentials.com/timelines
2•philistine•5h ago•2 comments

Show HN: Grammar of Graphics CLI tool made in Rust

https://github.com/williamcotton/gramgraph
2•williamcotton•5h ago•0 comments

Show HN: Tailsnitch – A security auditor for Tailscale

https://github.com/Adversis/tailsnitch
271•thesubtlety•2d ago•28 comments

Show HN: Prism.Tools – Free and privacy-focused developer utilities

https://blgardner.github.io/prism.tools/
365•BLGardner•1d ago•99 comments

Show HN: Make audio loops online

https://makeloops.online/
66•bilalba•2d ago•22 comments

Show HN: Stash – Sync Markdown Files with Apple Notes via CLI

https://github.com/shakedlokits/stash
70•shuka•1d ago•21 comments

Show HN: DoNotNotify – Log and intelligently block notifications on Android

https://donotnotify.com/
339•awaaz•2d ago•163 comments

Show HN: I built a simple "Gemini" watermark remover extension, "Peel Banana"

https://chromewebstore.google.com/detail/peel-banana/cngdhnfjakplnhplnmlgjalmfcochdgj
2•davepoon•2h ago•0 comments

Show HN: Seapie – a Python debugger where breakpoints drop into a REPL

https://github.com/hirsimaki-markus/seapie
7•markushirsimaki•8h ago•1 comments

Show HN: llmgame.ai – The Wikipedia Game but with LLMs

https://www.llmgame.ai
24•jmcallister•1d ago•22 comments

Show HN: Jax-JS, array library in JavaScript targeting WebGPU

https://ss.ekzhang.com/p/jax-js-an-ml-library-for-the-web
80•ekzhang•1d ago•22 comments

Show HN: Foundertrace – chain of YC startups founded by its employees

https://foundertrace.com/
38•loondri•4d ago•13 comments

Show HN: GPU Cuckoo Filter – faster queries than Blocked Bloom, with deletion

https://github.com/tdortman/cuckoo-filter
31•tdortman•1d ago•4 comments

Show HN: DDL to Data – Generate realistic test data from SQL schemas

52•tbrannan•1d ago•29 comments
Open in hackernews

Show HN: Foundertrace – chain of YC startups founded by its employees

https://foundertrace.com/
38•loondri•4d ago
Inspired by PG’s tweet about a chain of 4 YC startups where the founder worked at a YC startup, I vibe coded and generated these genealogy chains for all ~6k YC startups. And to make these trees easily accessible I packaged them into a hosted webapp.

Few noteworthy YC startups which have had huge impact in YC ecosystem

Airbnb - 83 YC startups spawned

Stripe - 67 YC startups spawned

Dropbox - 50 YC startups spawned

Justin.tv/Twitch - 47 YC startups spawned

More recently founded YC startups which have spawned a lot more YC startups

Rappi - 21 YC startups spawned

Brex - 20 YC startups spawned

Scale AI - 19 YC startups spawned

Comments

loondri•4d ago
PG's tweet that inspired this https://x.com/paulg/status/1994904099566031300
fleahunter•21h ago
Interesting point about the chains of YC startups. It really makes you think about how interconnected the startup ecosystem is. I wonder if there's an unspoken pressure to “keep it in the family,” so to speak, where founders might feel inclined to hire from their previous startups, or even lean on those networks when starting something new.

I've noticed trends where certain skills or experiences seem to bubble up in waves – like when a specific tech stack becomes popular and then a bunch of startups pop up around it. It’s almost like there’s a breeding ground effect happening.

And what about the concept of mentorship? Do you think these 'family trees' could lead to more structured mentorship, where founders from successful startups actively guide the next generation? Could be an interesting angle to explore!

I’m curious about Edge cases too. Like, what happens when a founder breaks away from the traditional path, either founding a startup without that chain or maybe even pivoting away from the typical YC model? It makes these genealogies feel both fascinating and a touch limiting. I love seeing these connections getting mapped out, but part of me wonders if we might miss some innovative outliers by focusing too much on these chains.

twosdai•6h ago
Yc founder, there's not really any pressure like this that exists. Basically i think it's a proximity thing and consistent exposure to a specific section of the startup world that makes this happen.

Basically all those people would go all the same networking events sponsored by yc. There's not pressure so much as these people all have frequent and paid for, opportunities to "hang out" and talk about tech stuff together. Its possible you could define this as "pressure" but I think it's more of who you hangout with rather than some top down implicit force.

ien24sdq•1d ago
[flagged]
dang•1d ago
On HN, please don't use quotation marks to make it look like you're quoting someone when you aren't. It's an internet trope that doesn't contribute to thoughtful conversation, which is what we're trying for here.

https://news.ycombinator.com/newsguidelines.html

1potatonagger•22h ago
The etymology of "elite" is relevant, here--if you nose what I mean.
themanmaran•1d ago
This is awesome! One note, some of the batch years are wrong, I see someone from S24 marked as S19.
loondri•1d ago
Let me check and fix. Also if possible, mind sharing for which company its marked as S19 vs S24?
conditionnumber•1d ago
Very cool! It looks like you've purchased the data from a vendor, is that right? I love graphs of all kinds, so I was hoping to fetch the raw data and have a look at it with pyvis/networkx.
loondri•1d ago
Have mentioned the source at the top right header. Its by Crustdata.
conditionnumber•22h ago
Sorry, what I was clumsily trying to say is something like: "As an outsider to the startup world, your project has made me curious about the shape of the startup ecosystem as a whole. I bet you have the data to generate that picture! It is unfortunate that our market system is not yet sophisticated enough to compensate people for the difficult/valuable work of data collection, while also maximizing availability of data for those curious to use it."

At first I did not explore the tree visualizations in your web app: I simply noticed an index of company trees. Using the tree visualizer (which shows founders' names and pictures), I immediately realized that these trees represent complex human stories involving thousands of years of individual people's hard work. Interpreted that way, the data deserve a degree of awed respect that I did not show in my original comment. Truly sorry for that.

If you're curious about the shape of the startup ecosystem the way I am, there are a few things you could try. (In what follows I'm assuming "full graph" means company-company links with timestamps, not stories about individual people). pyvis has a feature that allows you to build a static html file with an embedded interactive representation of a graph. The data is embedded in the file, so you might not be able to share that unless you dropped enough information to conform such sharing to your data license. IIRC the static file has limited query/filter functionality so it can be difficult to make large graphs manageable for visualization. If that happens you can try using a graph database with a query UI. I remember another HN submission last year that (IIRC) used neo4j as a backend and provided a web UI with this kind of query/visualize workflow. I believe they also shared Github repos with the front-end/back-end code.

Anyway, thank you for sharing your project and sorry for the shit comment.

https://news.ycombinator.com/item?id=45066060

alexander2002•9h ago
He scrapped it
alexander2002•9h ago
Very creative name choice by

Dasha Cherepennikova to