Case.io is a collaborative file-sharing platform tailored for healthcare professionals, facilitating the creation of patient cases that include subfolders for organizing files, images, and videos (up to 300 MB). Each case can be securely shared via a unique link, with options for password protection and privacy settings. The platform supports real-time chat and a video module, allowing healthcare personnel to discuss cases while simultaneously viewing images. It also maintains a comprehensive case history log and provides fillable and signable PDFs for obtaining patient consent. Being web-based and responsive, Case.io is accessible on PCs, tablets, and smartphones and features a built-in DICOM viewer, eliminating the need for third-party software. Its key health focus areas include Sexual and Reproductive Health, Non-communicable Diseases, Health Promotion, Communicable Diseases, Maternal and Child Health, Emergencies, Injuries, Cancer, Mental Health, and Oral Health.