1 / 1Fichier
 2 / Alias for an existing remote
 3 / Amazon Drive
 4 / Amazon S3 Compliant Storage Provider (AWS, Alibaba, Ceph, Digital Ocean, Dreamhost, IBM COS, Minio, Tencent COS, etc)
 5 / Backblaze B2
 6 / Box
 7 / Cache a remote
 8 / Citrix Sharefile
 9 / Dropbox
10 / Encrypt/Decrypt a remote
11 / FTP Connection
12 / Google Cloud Storage (this is not Google Drive)
13 / Google Drive
14 / Google Photos
15 / Hubic
16 / In memory object storage system.
17 / Jottacloud
18 / Koofr
19 / Local Disk
20 / Mail.ru Cloud
21 / Mega
22 / Microsoft Azure Blob Storage
23 / Microsoft OneDrive
24 / OpenDrive
25 / OpenStack Swift (Rackspace Cloud Files, Memset Memstore, OVH)
26 / Pcloud
27 / Put.io
28 / QingCloud Object Storage
29 / SSH/SFTP Connection
30 / Sugarsync
31 / Tardigrade Decentralized Cloud Storage
32 / Transparently chunk/split large files
33 / Union merges the contents of several upstream fs
34 / Webdav
35 / Yandex Disk
36 / http Connection
37 / premiumize.me
38 / seafile