Dev tools · alternatives · 2026
24 alternatives to Çetele – Open-source notepad calculator
A free, offline-first notepad calculator. Evaluate math, multi-currency conversions (USD, EUR, TRY), Gram Altın gold rates, crypto (BTC, ETH, SOL), date arithmetic, and line references as you type.
Below are 24 products that do a similar job, ranked by how close each is in meaning and then by launch-day votes.
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A free-form calculator for Chrome
2022 · chromewebstore.google.com · its alternatives →
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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 →
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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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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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A currency converter with live rates that updates every 3s
2017 · chromewebstore.google.com · its alternatives →
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Discover exchange rates directly from your Mac menu bar
2019 · currencymenu.com · its alternatives →
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Simple and fast currency converter with offline mode
2024 · play.google.com · its alternatives →
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Powerful and convenient currency converter 💰
2019 · apps.apple.com · its alternatives →
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A free-form calculator extension for Google Chrome
2022 · chromewebstore.google.com · its alternatives →
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Easy to use Currency Calculator
2025 · currency-calculator.replit.app · its alternatives →
- 15
Crypto Exchange, Gift card Exchange and Rate calculator
2025 · xbankang.com · its alternatives →
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Hi HN! I built ToolDexo - a collection of 29 free online tools because I was tired of websites that force you to sign up just to use a calculator or word counter. What's included: - Calculators: BMI, calorie, mortgage, loan, tax, grade, tip, percentage, age, compound interest - Converters: Currency (36 currencies with live rates), unit, timezone, file size - Generators: Password, QR code, favicon, color picker, Lorem Ipsum, random number - Text tools: Word counter, case converter, character counter, text compare, Markdown editor - Dev tools: JSON formatter, Base64 encoder/decoder Tech…
2025 · minitools4u.com · its alternatives →
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Multi-currency travel calculator with offline storage
2025 · its alternatives →
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Your private Notion-style workspace - no login, no cloud
2025 · binarydecimal.com · its alternatives →
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A new Flutter project.
2022 · calc-o-pad.thejunkland.com · its alternatives →
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LineCalc▲7Free online calculator with real-time collaboration
Dec 2025 · linecalc.com · its alternatives →
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Instantly converts BTC numbers to USD & calculates totals.
2018 · chromewebstore.google.com · its alternatives →
- 23NS
2020 · type-calc.herokuapp.com · its alternatives →
- 24
Convert BTC/ETH/SOL into real electronics prices
Aug 2026 · crypto-value-calculator.vercel.app · 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 →