CryptoTools.tech's answer

Built with Astro (static-site generator, ships zero JS by default) and Preact "islands" for interactivity — so pages are pure static HTML/CSS/JS with sub-second loads and green Core Web Vitals. Cryptography runs in-browser via audited libraries (@noble/hashes, @noble/curves, @scure/bip39/bip32) and the Web Crypto API. Served by Caddy (automatic HTTPS, HTTP/2+3) on Docker, with a thin optional backend only for live/historical price data. Fully internationalized into 10 languages.

SafeUtils's answer:

Tauri, Rust, React.js, TypeScript, Vite

CryptoTools.tech's answer

Three overlapping groups: (1) crypto traders & investors who need quick, reliable calculators (profit, DCA, position sizing, liquidation, tax estimates); (2) developers & web3 builders who need cryptography and Ethereum utilities (hashing, AES/RSA, BIP39, JWT, EVM bytecode, ENS namehash, EIP-712); and (3) privacy- and security-conscious users who want tools that run locally and never upload their data. It's global and multilingual, skewing toward technically literate, self-serve users who want an answer without a bloated dashboard.

SafeUtils's answer:

Software Engineers, Programmers, Data Analysts

CryptoTools.tech's answer

Most crypto tool sites make you sign up, bury the tool under ads and pop-ups, or send your input to a server. CryptoTools is the opposite: privacy-first (client-side cryptography — nothing is uploaded), instant (static pages, sub-second loads, clean UI), and completely free with no account. You also get both worlds in one place — finance calculators (profit/P&L, DCA backtests, mining, tax) and developer/cryptography utilities — across 10 languages, with the formulas shown so you can trust the math. If you value speed, privacy, and not being upsold, it's the cleaner choice.

SafeUtils's answer:

Much more tools than any competition & supports all mayor platforms.

CryptoTools.tech's answer

CryptoTools.tech is a single, fast home for 30+ free crypto & finance tools — calculators, converters, and a full cryptography toolkit — with no sign-up, no tracking, and no paywalls. What sets it apart: every cryptography tool (hashing, AES, RSA, BIP39 seed phrases, HD wallets, JWT decoding, EVM/ENS dev utilities) runs 100% in your browser — your keys and data never touch a server. It uniquely covers both meanings of "crypto" — cryptocurrency calculators and cryptography utilities — under one roof, in 10 languages, with every tool embeddable.

SafeUtils's answer:

More tools, all mayor platforms, performance, beautiful UI, developer experience.

CryptoTools.tech's answer

It started from a simple frustration: every "crypto calculator" wanted a sign-up, was slow and ad-choked, or quietly sent your data to a server. So CryptoTools was built as the tool site I wished existed — fast, free, private, no account — and grew into a broad cluster spanning both cryptocurrency calculators and cryptography utilities. It's an independent, bootstrapped project with a simple principle: do one thing well per page, and respect the user's time and privacy.

SafeUtils's answer:

Hey, it's Wiktor 👋. I built and now happily maintain the SafeUtils app for two reasons:

1. It felt like I'm about to go to jail every time I pasted my data on the Internet.
2. It was WAY too many bookmarks, and they didn't even cover half of my needs.

I decided to equip other developers with a missing solution to their everyday operations.

CryptoTools.tech's answer

• Crypto traders and long-term investors
• Software and web3 / smart-contract developers
• Miners estimating profitability
• Security- and privacy-conscious users
• Educators, students, and bloggers (who also embed the tools)