Life & fun · September 23, 2022
MathB.in – Mathematics pastebin written in Common Lisp
Mathematics pastebin software that powered MathB.in from 2012 to 2025 - susam/mathb
MathB.in – Mathematics pastebin written in Common Lisp launched on September 23, 2022 with 134 votes, #247 of 3,464 launches that month and more than 95% of that year's launches. The site was still online in September 2026, 4 years on.
In plain words
MathB.in is a pastebin service built with Common Lisp that allows users to share and store mathematical content. It's designed for mathematicians, students, and anyone needing to paste and share equations, calculations, or mathematical notation online. The service launched in 2022 and is available as open-source code on GitHub, making it accessible for those interested in both mathematics collaboration and Common Lisp development.
written from the facts on this page · September 2026
Does a similar job
all alternatives →
Mathematics Chalkboard with LaTeX and Markdown Support2021 · github.com · ▲89Self-rendering and distributable mathematics chalkboards - susam/muboard
Mathcha – Online Mathematics Editor2017 · mathcha.io · ▲358Online WYSIWYG Mathematics Editor (Equation Editor), fast and powerful Editing features, inputting Normal text, Math symbols, and drawing Graph/Diagram in one single editor, help writing Math Document much easier. Export to Latex, Tikz, SVG, or Image (PNG).
- MIMathB.in Demo – Share Mathematics on the Web with Markdown and LaTeX2022 · mathb.in · ▲16
I made a web-based notepad with a built in unit calculator2022 · numpad.io · ▲488I 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/
Mathesar – open-source collaborative UI for Postgres databases2023 · github.com · ▲281Hi HN! We just released the public alpha version of Mathesar (https://mathesar.org/, code: https://github.com/centerofci/mathesar). Mathesar is an open source tool that provides a spreadsheet-like interface to a PostgreSQL database. I was originally inspired by wanting to build something like Dabble DB. I was in awe of their user experience for working with relational data. There’s plenty of “relational spreadsheet” software out there, but I haven’t been able to find anything with a comparable UX since Twitter shut Dabble DB down. We're a non-profit…

More life & fun this month
the category →
A free city-building game in your browser. You are the mayor. You know what the city needs. Now get it past the zoning board, the neighbors, the appeals court and the next election.
Life & fun · 19h ago · permit.petercai.com
- IV
Life & fun · 13d ago · tanzaniaeducationproject.org

Turn a phone, tablet or TV into a sign. Type a message and it fills the screen: welcome signs, timers, Wi-Fi passwords and more. No app, no account, free.
Life & fun · 14d ago · bigwords.page

Play a free virtual guitar online with your keyboard or by touch. Slow songs down and see every chord, string and strum. Acoustic, classic, electric and bass.
Life & fun · 8d ago · guitoro.com

Carrier settings from iPhone, Pixel and Galaxy firmware, decoded and compared: APNs, VoLTE, 5G and Wi-Fi Calling per carrier, and what each build changed.
Life & fun · 12d ago · carrierexplode.com

Life & fun · 22d ago · space.bl2.net
Source: Show HN post ↗
Launched alongside, September 2022
the whole month →- IM
Life & fun · 2022 · dogbunnypuzzle.com

A couple of years ago, I had an interesting idea. What if there was a marketplace where all the underlying tech was open-source? The order management system, the storefront, customer support, etc. The marketplace would simply connect to the seller’s infra instead of locking them in. If, for some reason, the seller is removed from the marketplace, their software stays with them and they can continue accepting orders directly. This model can be used to disrupt any marketplace from AirBNB to UberEats: building tech for home renters and restaurants and later, leveraging that to build a competing…
Dev tools · 2022 · openship.org



