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Cryptomator provides transparent, client-side encryption for your cloud. Protect your documents from unauthorized access. Cryptomator is free and open source software, so you can rest assured there are no backdoors.

FolderSync enables simple sync to cloud based storage to and from local folders on the device SD cards. It support a wide range of different cloud providers and file protocols, and support for more platforms are added continuously. Root file access supported on rooted devices.

Collect your thoughts, think, write, brainstorm, and create the perfectly looking notes with this powerful, all-purpose, productivity tool.

Unify all your storage. odrive makes it easy to access, sync, and share all your files from one place. Integrations to 20+ services, desktop sync, CLI (inc. Linux), placeholders, zero-knowledge-encryption, web client, advanced sharing, and more.

Openbox is a highly configurable, next generation window manager with extensive standards support.

File manager / explorer with full access to files on SD card, external SD card, cloud services, SMB, FTP, WebDAV, HTTP, NAS, USB OTG and system internal flash if working on a rooted phone.