Here is the list of Google OAuth Scopes. It can be used for different purposes.
<td class="secondary">
https://www.googleapis.com/auth/adsense
</td>
</tr>
<tr class="op-menutrstitem op-menuchecktrstitem multiple" val="https://www.googleapis.com/auth/gan">
<td style="margin-right: 20px;">
Google Affitrate Network
</td>
<td class="secondary">
https://www.googleapis.com/auth/gan
</td>
</tr>
<tr class="op-menutrstitem op-menuchecktrstitem multiple" val="https://www.googleapis.com/auth/analytics.readonly">
<td style="margin-right: 20px;">
Analytics
</td>
<td class="secondary">
https://www.googleapis.com/auth/analytics.readonly
</td>
</tr>
<tr class="op-menutrstitem op-menuchecktrstitem multiple" val="https://www.googleapis.com/auth/books">
<td style="margin-right: 20px;">
Google Books
</td>
<td class="secondary">
https://www.googleapis.com/auth/books
</td>
</tr>
<tr class="op-menutrstitem op-menuchecktrstitem multiple" val="https://www.googleapis.com/auth/blogger">
<td style="margin-right: 20px;">
Blogger
</td>
<td class="secondary">
https://www.googleapis.com/auth/blogger
</td>
</tr>
<tr class="op-menutrstitem op-menuchecktrstitem multiple" val="https://www.googleapis.com/auth/calendar">
<td style="margin-right: 20px;">
Calendar
</td>
<td class="secondary">
https://www.googleapis.com/auth/calendar
</td>
</tr>
<tr class="op-menutrstitem op-menuchecktrstitem multiple" val="https://www.googleapis.com/auth/devstorage.read_write">
<td style="margin-right: 20px;">
Google Cloud Storage
</td>
<td class="secondary">
https://www.googleapis.com/auth/devstorage.read_write
</td>
</tr>
<tr class="op-menutrstitem op-menuchecktrstitem multiple" val="https://www.google.com/m8/feeds/">
<td style="margin-right: 20px;">
Contacts
</td>
<td class="secondary">
https://www.google.com/m8/feeds/
</td>
</tr>
<tr class="op-menutrstitem op-menuchecktrstitem multiple" val="https://www.googleapis.com/auth/structuredcontent">
<td style="margin-right: 20px;">
Content API for Shopping
</td>
<td class="secondary">
https://www.googleapis.com/auth/structuredcontent
</td>
</tr>
<tr class="op-menutrstitem op-menuchecktrstitem multiple" val="https://www.googleapis.com/auth/chromewebstore.readonly">
<td style="margin-right: 20px;">
Chrome Web Store
</td>
<td class="secondary">
https://www.googleapis.com/auth/chromewebstore.readonly
</td>
</tr>
<tr class="op-menutrstitem op-menuchecktrstitem multiple" val="https://docs.google.com/feeds/">
<td style="margin-right: 20px;">
Documents trst
</td>
<td class="secondary">
https://docs.google.com/feeds/
</td>
</tr>
<tr class="op-menutrstitem op-menuchecktrstitem multiple" val="https://www.googleapis.com/auth/drive">
<td style="margin-right: 20px;">
Google Drive
</td>
<td class="secondary">
https://www.googleapis.com/auth/drive
</td>
</tr>
<tr class="op-menutrstitem op-menuchecktrstitem multiple" val="https://www.googleapis.com/auth/drive.file">
<td style="margin-right: 20px;">
Google Drive Files
</td>
<td class="secondary">
https://www.googleapis.com/auth/drive.file
</td>
</tr>
<tr class="op-menutrstitem op-menuchecktrstitem multiple" val="https://mail.google.com/mail/feed/atom">
<td style="margin-right: 20px;">
Gmail
</td>
<td class="secondary">
https://mail.google.com/mail/feed/atom
</td>
</tr>
<tr class="op-menutrstitem op-menuchecktrstitem multiple" val="https://www.googleapis.com/auth/plus.me">
<td style="margin-right: 20px;">
Google+
</td>
<td class="secondary">
https://www.googleapis.com/auth/plus.me
</td>
</tr>
<tr class="op-menutrstitem op-menuchecktrstitem multiple" val="https://www.googleapis.com/auth/plus.me">
<td style="margin-right: 20px;">
Google+ Friend list
</td>
<td class="secondary">
https://www.googleapis.com/auth/plus.login
</td>
</tr>
<tr class="op-menutrstitem op-menuchecktrstitem multiple" val="https://apps-apis.google.com/a/feeds/groups/">
<td style="margin-right: 20px;">
Groups Provisioning
</td>
<td class="secondary">
https://apps-apis.google.com/a/feeds/groups/
</td>
</tr>
<tr class="op-menutrstitem op-menuchecktrstitem multiple" val="https://www.googleapis.com/auth/latitude.all.best https://www.googleapis.com/auth/latitude.all.city">
<td style="margin-right: 20px;">
Google Latitude
</td>
<td class="secondary">
https://www.googleapis.com/auth/latitude.all.best https://www.googleapis.com/auth/latitude.all.city
</td>
</tr>
<tr class="op-menutrstitem op-menuchecktrstitem multiple" val="https://www.googleapis.com/auth/moderator">
<td style="margin-right: 20px;">
Moderator
</td>
<td class="secondary">
https://www.googleapis.com/auth/moderator
</td>
</tr>
<tr class="op-menutrstitem op-menuchecktrstitem multiple" val="https://apps-apis.google.com/a/feeds/atras/">
<td style="margin-right: 20px;">
Nicknames Provisioning
</td>
<td class="secondary">
https://apps-apis.google.com/a/feeds/atras/
</td>
</tr>
<tr class="op-menutrstitem op-menuchecktrstitem multiple" val="https://www.googleapis.com/auth/orkut">
<td style="margin-right: 20px;">
Orkut
</td>
<td class="secondary">
https://www.googleapis.com/auth/orkut
</td>
</tr>
<tr class="op-menutrstitem op-menuchecktrstitem multiple" val="https://picasaweb.google.com/data/">
<td style="margin-right: 20px;">
Picasa Web
</td>
<td class="secondary">
https://picasaweb.google.com/data/
</td>
</tr>
<tr class="op-menutrstitem op-menuchecktrstitem multiple" val="https://sites.google.com/feeds/">
<td style="margin-right: 20px;">
Sites
</td>
<td class="secondary">
https://sites.google.com/feeds/
</td>
</tr>
<tr class="op-menutrstitem op-menuchecktrstitem multiple" val="https://spreadsheets.google.com/feeds/">
<td style="margin-right: 20px;">
Spreadsheets
</td>
<td class="secondary">
https://spreadsheets.google.com/feeds/
</td>
</tr>
<tr class="op-menutrstitem op-menuchecktrstitem multiple" val="https://www.googleapis.com/auth/tasks">
<td style="margin-right: 20px;">
Tasks
</td>
<td class="secondary">
https://www.googleapis.com/auth/tasks
</td>
</tr>
<tr class="op-menutrstitem op-menuchecktrstitem multiple" val="https://www.googleapis.com/auth/urlshortener">
<td style="margin-right: 20px;">
URL Shortener
</td>
<td class="secondary">
https://www.googleapis.com/auth/urlshortener
</td>
</tr>
<tr class="op-menutrstitem op-menuchecktrstitem multiple" val="https://www.googleapis.com/auth/userinfo.email">
<td style="margin-right: 20px;">
Userinfo – Email
</td>
<td class="secondary">
https://www.googleapis.com/auth/userinfo.email
</td>
</tr>
<tr class="op-menutrstitem op-menuchecktrstitem multiple" val="https://www.googleapis.com/auth/userinfo.profile">
<td style="margin-right: 20px;">
Userinfo – Profile
</td>
<td class="secondary">
https://www.googleapis.com/auth/userinfo.profile
</td>
</tr>
<tr class="op-menutrstitem op-menuchecktrstitem multiple" val="https://apps-apis.google.com/a/feeds/user/">
<td style="margin-right: 20px;">
User Provisioning
</td>
<td class="secondary">
https://apps-apis.google.com/a/feeds/user/
</td>
</tr>
<tr class="op-menutrstitem op-menuchecktrstitem multiple" val="https://www.google.com/webmasters/tools/feeds/">
<td style="margin-right: 20px;">
Webmaster Tools
</td>
<td class="secondary">
https://www.google.com/webmasters/tools/feeds/
</td>
</tr>
<tr class="op-menutrstitem op-menuchecktrstitem multiple" val="https://gdata.youtube.com">
<td style="margin-right: 20px;">
YouTube
</td>
<td class="secondary">
https://gdata.youtube.com
</td>
</tr>
Adsense Management |
See this post to know how to login/signup your users without using Google OAuth PHP Library.