Open the search dialog by clicking the magnifying glass at the top right or use the keyboard shortcut shift+s to open it from anywhere. 

Then click the flag icon at the top right in the dialog to see a list of all your projects. 

You can search for projects or filter them. 

Using the Smart List strategy you can create a custom list that contains all projects. 

Simply set the item type filter to "projects" and save your list.
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Using the keyboard shortcut shift+spacebar opens a search dialog where you can quickly navigate to any project. 

You can also select "all" which navigates to the project overview. 

Here you can filter and sort all your projects.