CodeSpace uses your Google account to provide a unique "authenticated login" without requiring you to set up a password for yet another site!

In addition, the code you create is stored to your Google Drive - so you can access, share, download, and manage your code just like other documents.

CodeSpace Access

When you login, CodeSpace requires a minimal set of privileges that are needed to create and load only files that it creates. 

Google lets you view and manage access granted to Apps here: