CosmosDev

CosmosDev is a comprehensive suite of free online developer tools designed to streamline common development tasks. It offers a wide range of utilities for encoding/decoding (Base64, URL, HTML), generating (UUID, hashes), converting (JSON to XML, timestamps), and validating (JSON, email) data. The platform features a clean, dark-themed interface with fast performance, no ads, and no sign-up required. Ideal for developers needing quick, reliable tools without leaving the browser.