Wpf annotate - An annotation app for Powerpoint as the 365 version has random spikes that go up when using the app.

How to use:

1. Start presenting your slides

2. Run the app by pressing it from start menu or alt-tabbing into the folder the exe is in

3. After app starts, just alt-tab OR just press Left/Right Arrow OR scroll up/down to get back to your slides

Shortcuts:

Press q to kill the application

Press c to clean the annotation already done on screen

Press Left/Right Arrow OR scroll up/down to go through your slides however you wish even while keeping the annotation

Starting with release 2 / 1.0.1 :

Press p to choose pen color

Press o to choose pen tip size

Starting with release 3 / 1.0.0.3 : (by @roma160 )

Have added better integration with PowerPoint application:

The slideshow would be automatically brought forward when on application start

If PowerPoint file is opened, the application would also try to automatically start the slideshow

Hides both application and slideshow on h keypress

Puts slideshow and application forward once the application is selected in the system tray.