LegitURL vs (Open Source) Periodic Table

Like a nutrition label for links. LegitURL instantly tells you if a link looks trustworthy. A low score means you probably shouldn’t bother. Because online, trust should be earned and - NOT assumed. Whether it’s from a sketchy email, a shortened link, or a suspicious redirect, LegitURL performs a full technical analysis and gives you a clear trust score. You can also generate a copy-ready report to ask your favorite AI what’s right (or wrong) with the link. For advanced users, LegitURL analyzes: • Domain and subdomain structure • TLS/SSL certificate validation • HTTP headers and security policies • JavaScript and cookie behavior • Redirect chains and tracking patterns • PDF export of all technical details Privacy-first by design: All analysis happens locally on your device. No cloud. No tracking. No data collection. And yes… it’s fully open source. Built for casual users, developers, and privacy nerds alike.

A clean, free periodic table for chemistry students, teachers, and curious people. Explore all 118 elements in an interactive table, then tap into detailed element cards with atomic, physical, discovery, and isotope data. Switch color modes to see trends across the table, search by name or symbol, compare properties, and use practical tools when homework or curiosity sends you down a chemistry rabbit hole. FEATURES Interactive Periodic Table Pinch, pan, zoom, and tap through the full periodic table with category colors and property heatmaps. Element Quiz Learn symbols, names, atomic numbers, and element families with quick 10-question rounds. Start with the first 20 elements and work up to all 118. Element Details See atomic mass, density, melting point, boiling point, electronegativity, radius, electron shells, discovery facts, isotopes, and more. Safety Data GHS hazard pictograms, signal words, and hazard statements for 77 elements, free. No PRO lock. Search and Lists Find elements quickly by name, symbol, or atomic number. Isotopes Browser Browse thousands of nuclides with half-life, decay, abundance, and nuclear data. Molar Mass Calculator Parse formulas with nested groups and hydrates, then see the element-by-element mass breakdown. Chemistry Tools Balance equations, review common reactions, inspect trends, and use reference tables for ions, solubility, constants, and organic series. Mini Academy and Dictionary Learn core chemistry ideas with compact lessons, glossary entries, and quick checks. No ads. No paywalls. No account required. 100% Open Source The complete source code is public - see it, audit it, or contribute at https://github.com/Open-Apps-Studio/periodic-table