Alternatives to: Box

Archifiltre is a web application that helps visualize, organize, and clean up digital files for better storage and archiving.

Filestash is a universal file manager providing a single, intuitive interface for accessing and managing files across multiple storage solutions.

Maarch Courrier is a comprehensive electronic mail management solution that streamlines workflows, enhances collaboration, and ensures secure document handling through an intuitive interface and advanced features.

ownCloud Infinite Scale is a highly scalable, cloud-native data platform providing unified access to distributed data sources.

ownCloud is an open-source software for secure file synchronization, sharing, and content collaboration, enabling easy teamwork from anywhere.

PlikShare is a self-hosted, secure file-sharing platform offering unlimited users and storage for a one-time payment.

Pydio Cells is a self-hosted document sharing and collaboration platform offering complete data control, advanced security, and powerful automation features.

Tresorit is a secure platform for file sharing, collaboration, and e-signatures, designed to protect sensitive data with zero-knowledge, end-to-end encryption.