Dev tools · alternatives · 2026
24 alternatives to PG Number – I scraped 100k pages to find proximity to Paul Graham
Erdős Number is an individual's "collaborative distance" to Paul Erdős. I calculated the "PG number" for everybody Paul Graham thanks in his essays. I then recursively found their blogs, and extracted the people that they thank in their essays. This is still a work in progress. The data is open-source and I'm continuing to add edges on Github (linked on the website).
Below are 24 products that do a similar job, ranked by how close each is in meaning and then by launch-day votes. PG Number – I scraped 100k pages to find proximity to Paul Graham launched in 2023; newer entries below may have overtaken it.
- 1
Track your progress reading PG's essays
2025 · pgessays.com · its alternatives →
- 2
- 3
I launched NumPad v1 on here a few years ago, and back then it wasn't much more than a thin CodeMirror wrapper around the calculator engine I'd written. Now I've rewritten it as a PWA that supports multiple documents, persists them to IndexedDB, and has a syncing service for paying customers. Syncing is handled by Automerge[1] under the hood, which should make it relatively easy to get document sharing working too. [1] https://automerge.org/
2022 · numpad.io · its alternatives →
- 4
Startup and entrepreneurship advice from PG in visual form
2019 · its alternatives →
- 5IW
The book page links to a blog post that explains how I got about it (and has a link to sample content), but the TL&DR is that I could not find a lot of books that were on "our" history _and_ were larded with technical details. So I set about writing one, and some five years later I'm happy to share the result. I think it's one of the few "computer history" books that has tons of code, but correct me if I'm wrong (I wrote this both to tell a story and to learn :-)). My favorite languages are Smalltalk and Lisp, but as an Emacs user, I've been using the latter for much longer and for my…
Feb 2026 · berksoft.ca · its alternatives →
- 6IM
I've been studying interval arithmetic for the past few weeks and it's a really interesting field because while there is a ton of super interesting research published over the past decades, it has never really gotten the recognition that it deserves, IMO. One reason for this is that standard interval arithmetic has really poor handling of division by intervals containing zero. If you compute 1 / [-1, 2] in regular interval arithmetic, you get either [-∞, +∞], or you have to say that the operation is undefined. Both solutions are virtually useless. The real answer of course is [-∞, -1] U…
Apr 2026 · victorpoughon.github.io · its alternatives →
- 7
A tool for thinking — unrestrictive and full of surprises.
2025 · its alternatives →
- 8AP
2013 · annotatepg.com · its alternatives →
- 9
Hi all, just posting an update to my previous Show HN, where I announced a side-project I worked on which was a (web version) of a multi-user, notepad style calculator: https://news.ycombinator.com/item?id=31817997 After a couple of user requests (and having a good think about it) I decided to migrate the web UI to create a Mac and Windows desktop app. After using it a little bit, I feel this is a much better experience than the webapp, and reduces a lot of the friction if I wanted to run a few small calculations. You can find the download links below:…
2022 · figr.app · its alternatives →
- 10
Empower next 2B+ people serendiply encounter PG wisdom
2022 · its alternatives →
- 11
Builds epub book out of Paul Graham's essays. GitHub Gist: instantly share code, notes, and snippets.
2012 · gist.github.com · its alternatives →
- 12
A modernized and annotated code companion to Paul Graham's "On Lisp". - DalekBaldwin/on-lisp
2015 · github.com · its alternatives →
- 13
Stephen Wolfram's new book on the Wolfram Language
2015 · wolfram.com · its alternatives →
- 14
Everything that would be here is in the README. I hope this gets big, it has tons of potential.
2013 · github.com · its alternatives →
- 15
A bot to navigate and search Paul Graham essays
2023 · paulgrahambot.vercel.app · its alternatives →
- 16
Paul Erdõs one of the greatest mathematicians of 20 century
2015 · amazon.com · its alternatives →
- 17
- 18
Topic Modeling over Paul Graham's essays. Contribute to futureUnsure/pg-essay-lda development by creating an account on GitHub.
2017 · github.com · its alternatives →
- 19
Mathematical genius who transformed Internet
2015 · amazon.com · its alternatives →
- 20IW
Hi folks, I wrote a blog post about the two's complement. I always scratched my head about some details: - "Take the ones' complement and add one" - "Half of the range are negative numbers" - etc. Now I think I understand these details, but had to piece it together from some sources. I'd love to get your feedback on this post. Looking forward. BR, Pedram
2023 · hadjian.com · its alternatives →
- 21IM
https://github.com/siraben/ti84-forth Hi HN! For the past year I've been getting into programming in Z80 assembly (especially for the TI-84+). More recently I've been learning about the Forth programming language and after a lot of searching online (in vain) for a Forth interpreter for the TI-84, I decided to write one myself. It's been fun demoing this to others, because it's a very unexpected use of a calculator. It's my largest project to date, and I'm interested to know what the HN community thinks, please feel free to critique my code! -- Ben
2018 · its alternatives →
- 22A
2022 · askpaulgraham.cyclic.app · its alternatives →
- 23IM
Recently moved to Egypt, and in dire need to get the numbers down. Great excuse to explore learning software some more. Possibly very niche, but maybe it is useful for someone else out there. Feedback is always welcome.
2023 · arabic-numbers.koljapluemer.com · its alternatives →
- 24
A classic book for web analytics geeks
2015 · amazon.com · its alternatives →
Also compare
- Paul Graham Essay Tracker alternatives
- pg2epub alternatives
- I made a web-based notepad with a built in unit calculator alternatives
- Paul Graham's Essays Visualized alternatives
- I wrote a technical history book on Lisp alternatives
- I made a calculator that works over disjoint sets of intervals alternatives
Ranked by how close each launch is in meaning, then by votes. Prices were read from each product’s own site when checked and can change. Refine with your own description →