GzsTool

Project page: https://github.com/Atvaark/GzsTool
Latest releases: https://github.com/Atvaark/GzsTool/releases

Command line Fox Engine g0s, fpk, fpkd and pftxs unpacker/repacker

Requirements
Microsoft .NET Framework 4.5

Usage
GzsTool file_path|folder_path

Examples
Unpacking a g0s file. This will unpack all files to the folder called "file_name" and will create a "file_name.g0s.xml" file.
GzsTool file_path.g0s

Unpacking an fpk/fpkd file. This will unpack all files to the folder called "file_name_fpk/file_name_fpkd" and will create a "file_name.fpk.xml/file_name.fpkd.xml" file.
GzsTool file_path.fpk
GzsTool file_path.fpkd

Unpacking a pftxs file. This will unpack all files to the folder called "file_name_pftxs" and will create a "file_name.pftxs.xml" file.
GzsTool file_path.pftxs

Unpacking all fpk and fpkd files in a folder. This will unpack all files to their respective folders and create the respective xml files.
GzsTool folder_path

Repacking a g0s file. This will create the "file_name.g0s" archive.
GzsTool file_path.g0s.xml

Repacking an fpk/fpkd file. This will create the "file_name.fpk/file_name.fpkd" archive.
GzsTool file_path.fpk.xml
GzsTool file_path.fpkd.xml

Repacking a pftxs file. This will create the "file_name.pftxs" archive.
GzsTool file_path.pftxs.xml

Remarks
Repacking a g0s file without changes will result in a smaller file. This is due to the tool not reencrypting formerly encrypted files and thereby not requiring to store the decryption keys.