Seafile is an open source cloud-based file storage and sharing platform that includes a variety of features for sharing large files, such as file versioning, file locking, and file encryption. Seafile can be installed on-premises or hosted in the cloud, and includes mobile and desktop clients for easy file access and sharing. Seafile has a slightly different architecture, and it uses its own server component instead of a traditional web server. It stores files in a de-duplicated, block-based storage, which can make it more efficient for large datasets. File transfer is done via a custom protocol that uses TCP for transfer and HTTPS for encryption.