This is collection of projects to work with Path of Exile® Content.ggpk file.
- 
DefragmentGPPK console application to defragment Content.ggpk. It removes all FREE records in it and rewrites other content to specific file. 
- 
LibDat library for handling .dat file parsing, viewing, changing, exporting, exporting as CSV, etc ... 
- 
LibGGPK library for working with GGPK files 
- 
PatchGGPK ??? 
- 
PoeStrings ??? 
- 
VPatchGGPK ??? 
- 
VisualGGPK This is viewer for GGPK files. It shows internal structure of files and folders in tree view and allows: - viewing data in the internal Viewer: pictues, text files, or special table viewer for .dat files
- exporting fiels or directories from context menu
- replacing content of files with other data
- delete files and directories and save clipped GGPK file. For example, clipped GGPK filewith only Data\ folder occupies only 15 Mb of space and loads in 1 second in VisualGGPK instead of 20-40 seconds. Of course, such file couldn't be used for game.
- opening file in the external application on double mouse click (.dat files open as CSV file)
 
Original source can be found at https://code.google.com/p/libggpk/, but it's not updated often.