| encoding/json | Package json implements encoding and decoding of JSON as defined in RFC 7159. |
| fyne.io/fyne | Package fyne describes the objects and components available to any Fyne app. |
| fyne.io/fyne/app | Package app provides app implementations for working with Fyne graphical interfaces. |
| fyne.io/fyne/canvas | Package canvas contains all of the primitive CanvasObjects that make up a Fyne GUI |
| fyne.io/fyne/layout | Package layout defines the various layouts available to Fyne apps |
| fyne.io/fyne/theme | Package theme defines how a Fyne app should look when rendered |
| fyne.io/fyne/widget | Package widget defines the UI widgets within the Fyne toolkit |
| os | Package os provides a platform-independent interface to operating system functionality. |
| path/filepath | Package filepath implements utility routines for manipulating filename paths in a way compatible with the target operating system-defined file paths. |