Below is a collection of software tools, developed and used for various tasks over the course of around 15 years, maybe you can find something useful among them

A brief description along with a screenshot for each program follows:

SXsshfsGUI- A yad GUI to mount remote file systems through sshfs

Required software: yad, sshfs

Prerequisites: Successful ssh connection with remote user@host

Resource file: $HOME/.SXsshfsGUIrc for preset remote filesystems / local mount points to be appearing automatically in the Remote and Local drop down fields shown above
(Legend: R - remote, M - local mount point)

-------- RESOURCE FILE SNIPPET--------
R user@host:directory
M path_to_mount_point
--------8<--------8<--------8<--------8<--------8<--------8<--------8<--------8<--------8<--------

SXencfsGUI- A yad GUI to mount encrypted file systems through encfs

Required software: yad, encfs

Prerequisites: Successful encryption of a directory and empty mount point

Resource file: $HOME/.SXencfsGUIrc for preset encrypted filesystems / mount points to be appearing automatically in the [Encrypted] [Mountpoint] drop down field shown above

-------- RESOURCE FILE SNIPPET--------
/absolute/path/to/encrypted/directory1 /absolute/path/to/mount/point1
/absolute/path/to/encrypted/directory2 /absolute/path/to/mount/point2
--------8<--------8<--------8<--------8<--------8<--------8<--------8<--------8<--------8<--------

SXURLDecode- A yad GUI to decode URLs

Required software: yad

SXtextView- A zenity context menu viewer for text files

SXhtmlView- A zenity context menu viewer for previewing html files

SXmd5View- A zenity context menu md5 sum calculator for all files

SXsha1View- A zenity context menu sha1 sum calculator for all files