Kalenux is a software company founded in Istanbul in 2021, building production-grade web platforms, mobile applications, SaaS products, developer tools, and digital utilities used by hundreds of thousands of people worldwide. Our portfolio includes cognitive assessment platforms, file conversion and productivity tools, QR and barcode software, technical SEO tools, editorial platforms, Android applications, and open-source developer infrastructure. Alongside our own products, Kalenux provides software engineering services including custom web and mobile application development, backend and API engineering, cloud infrastructure, system architecture, technical consulting, performance optimization, and code audits. We combine software engineering with domain-specific research and product design to build reliable, scalable products intended for real-world production use.