Linux file system (FUSE) to access Dropbox, Sugarsync, Amazon S3, Google Storage, Google Drive or WebDAV servers.
http://joe42.github.com/CloudFusion/
https://github.com/joe42/CloudFusion
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Fuse也是一个办法：
A FUSE wrapper around MongoDB's GridFS
https://github.com/mikejs/gridfs-fuse
A Usermode Hookable Filesystem Library
http://osrg.github.io/earthquake/subprojects/
https://github.com/osrg/hookfs
Rust library for filesystems in userspace (FUSE)
https://github.com/zargony/rust-fuse
a FUSE file system based on Google Drive rust
https://github.com/harababurel/gcsf
An innovative FUSE wrapper for Google Drive. Python
https://github.com/dsoprea/GDriveFS
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