Projects
Digital projects and libraries for developers.
WebSofia is an editorial catalog, EntropyDraw is a web service for verifiable draws, DevTools brings together utilities for Windows, and React libraries are published as open source packages on npm.
Windows App & Web
DevTools
Over 30 development and IT tools: formatters, converters, security, and networking utilities. Available as a native app and online toolkit.
Editorial catalog
WebSofia
Philosophy, classical literature, and humanities: more than 700 books, 150 authors, videos, and quotes.
Discover WebSofia
Verifiable draws
EntropyDraw
Draws by numeric range or name list, with public cryptographic proofs and two modes: instant and auditable.
Discover EntropyDraw
Online Web Tools
Free web utilities and calculators.
Lightweight, privacy-first applications that run locally in your browser. Your data never leaves your device.
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Development & IT
DevTools Web
More than 35 web utilities: code formatters, cryptographic hash generation, API testing, encodings, and network inspect.
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Personal Finance
Financial Calculators
Simulate investment growth, mortgage schedules, severance, and plan your finances with cent precision.
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Home & DIY
Paint Calculator & Fixes
Calculate exact paint liters needed for your walls and explore practical step-by-step home maintenance guides.
Open source
Libraries for React developers.
Components published on npm to format numerical values and preview multi-format documents.
Localized formatting
react-intl-number-input
React component for masked numeric input, featuring locale formatting via Intl.NumberFormat, custom precision, and prefix or suffix support.
Document viewing
react-viewer-doc
React viewer for PDF, TIFF, SVG, and raster images, featuring document navigation, zoom, rotation, and localized interface.