
AllTools.dev
AllToolsLab
geteasetools.com
Omni Calculator
calculator.net
elec calc
30tools
Online Convert
Haskell Programming
HTML and CSS: Interactive Projects
Rust Adventure
Hacking with Swift
Functional Programming in Swift
Eloquent JavaScript
The Swift Developer's Cookbook
Full Stack Python
AllTools.dev is a modern, fast, free online toolkit built for people who need quick, accurate calculators and converters without signing up, creating an account, or wading through cluttered interfaces. The platform offers 500+ tools across finance (mortgage calculators, loan amortization, compound interest, currency conversion, debt payoff, retirement planning), health (BMI, calorie needs, pregnancy tracking, ideal weight, body composition), math (scientific, statistical, geometric, percentage, fraction), science and engineering, date and time utilities, unit conversions (volume, length, temperature, power, area), developer utilities (JSON, regex, JWT, hashing), and interactive math and algorithm visualizations. Every tool is free and works instantly in the browser. No accounts, no paywalls, no sign-in walls, no data collection beyond standard analytics. Calculations happen client-side for speed and privacy. Unlike older established calculator sites that grew through 20 years of ad-heavy layouts and outdated UX, AllTools.dev is built fresh on Astro with a clean, mobile-first, accessibility-conscious interface. New calculators ship weekly based on user demand. Ideal for: students doing homework, developers needing quick conversions, finance-minded folks planning loans and investments, professionals doing scientific or engineering calculations, and anyone who just needs a fast answer without installing an app.
AllTools.dev
Haskell ProgrammingAllToolsLab - AllToolsLab offers 50+ free online tools including PDF tools, calculators, converters and text utilities.
HTML and CSS: Interactive Projects - Embrace the digital frontier with this comprehensive guide.
geteasetools.com - 1000+ free tools on Ease Tools including calculators, converters, generators and utilities with no signup, no ads and instant access.
Rust Adventure - Rust Adventure is an ever-growing collection of courses designed to help you put Rust into production through real-world projects.
Omni Calculator - Helping you make rational decisions, one calculation at a time.
Hacking with Swift - Hacking with Swift is an hands-on, project-oriented book that teaches iOS app development with Swift.