Work · alternatives · 2026
24 alternatives to I made a web-based notepad with a built in unit calculator
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/
This is a web-based notepad that combines note-taking with built-in unit calculations. It supports percentages, dates, and variables alongside standard mathematical operations. The tool is designed for anyone who needs… Below are 24 products that do a similar job, ranked by how close each is in meaning and then by launch-day votes. I made a web-based notepad with a built in unit calculator launched in 2022; newer entries below may have overtaken it.
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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 →
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- 3AD
A new calculator software cannot really bring attention (https://chachatelier.fr/chalk/) However, I wrote a full article explaining why I had to build something "new" that does not behave like usual desktop calculator softwares : TL;DR All "small" calculator softwares I know share the same design flaws. And the GUI is not the only stumbling block in their poor efficiency. Handling correctly numerical approximations - expected or not - is crucial to trust the results. It is usually not done in lightweight tools. It should. So I prove that if I could do it, OS manufacturers…
2022 · its alternatives →
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NoteCalc▲267NoteCalc is a handy calculator trying to bring the advantages of Soulver to the web. - Release v0.3.0 · bbodi/notecalc3
2020 · github.com · its alternatives →
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Hissab▲108Hissab is a strict, unit-aware natural-language calculator for exact units, dates, finance, developer math, and AI-agent workflows. Free, open-source, and installable.
2023 · hissab.io · its alternatives →
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Simple Qt-based programming calculator. Contribute to fellerts/procal development by creating an account on GitHub.
2023 · github.com · its alternatives →
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As a native Windows user who switched to macOS a few years back, one thing I never got over was the simplicity and usefulness of the old school Notepad app. This app aims to recreate that very same experience, cross-platform and easily installable as a PWA. I've been using this for personal use for around 2 years and I figured it was time to share it with the world. Criticism, issues and PRs are welcome. Thanks!
2025 · github.com · its alternatives →
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CalcMate▲88calculate numbers, dates, units within notes
2023 · accounts.google.com · its alternatives →
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I’ve always found that online calculators tend to have bad UIs, especially on mobile. Most of the calculator websites I’ve come across use outdated and inconvenient ways of inputting data, or they format the results in confusing ways. I’ve noticed that fraction calculators (especially mixed fractions) are terrible to use, even on desktop. I haven’t built one of those yet, but it’s something I’m planning to tackle soon. This is a project I’ve always wanted to work on, but I’m relatively new to this space. So far, I’ve created a collection of simple calculators focused on math and finance. I’d…
2025 · its alternatives →
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Thank you for your comments, just some context: - The app is available for iOS, Android, Windows, Mac, Apple Vision Pro, and the Web. - The Web version is implemented as a Progressive Web Application that is very responsive, local first, offline first, can be installed, and is entirely free to use. - Native (hybrid) versions do not require subscription fees and have small one-time payment. - You can store your notes in Git using any Git provider such as GitHub, GitLab, or Bitbucket. However, it has the best built-in integration with GitHub. Self-hosted scenarios like Gitea are also…
2024 · about.noteshub.app · its alternatives →
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CalPal▲105I built this using React/Next.js. The parsing logic uses [library/custom regex]. Added Gemini API support so users can generate budget templates dynamically. No ads, just a tool.
Jan 2026 · trycalpal.app · its alternatives →
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Terminal based bit manipulator in ncurses. Contribute to mellowcandle/bitwise development by creating an account on GitHub.
2019 · github.com · its alternatives →
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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 →
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A free-form calculator for Chrome
2022 · chromewebstore.google.com · its alternatives →
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I recently published the Blender Python Cheatsheet on Gumroad a couple of days ago. In three pages, it is a collection of most frequently used functions and solutions to common problems you will encounter when writing scripts, macros or addons using the Blender API. I released it for free and I did
2023 · salaivv.com · its alternatives →
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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 →