Developer Offerings | Google Apps

Use the table below to determine what developer offerings exist for a given Google App. The available technologies are broken down into a few different categories.

Product	APIs	Scripting	Extensions	Integrations
	External endpoints, typically HTTP, for interacting with the product.	Services within Apps Script for interacting with the product.	Ways to add custom application logic into a Google App.	Ways to add G Suite functionality into your own application.
Calendar	Calendar API CalDAV Calendar Provider (Android)	Calendar Service Advanced Calendar Service	Calendar Gadgets (Web only)	N/A
Classroom	Classroom API	Classroom Service	N/A	Classroom share button (Web only)
Contacts	People API (Read-only) Contacts API CardDAV	Contacts Service	N/A	N/A
Docs	Drive API (File-level metadata, import/export)	Document Service Drive Service (File-level metadata) Advanced Drive Service (File-level metadata, import/export)	Add-ons (Web only)	Embeddable (via Drive API)
Drawings	Drive API (File-level metadata, export)	N/A	N/A	Embeddable (via Drive API)
Drive	Drive API Drive Android API Activity API (Detailed file history)	Drive Service Advanced Drive Service Apps Activity Service (Detailed file history)	Drive Apps (Web only)	Picker API (File selection) Save to Drive Button
Forms	Drive API (File-level metadata)	Forms Service Drive Service (File-level metadata) Advanced Drive Service (File-level metadata)	Add-ons	Embeddable (via Drive API)
Gmail	Gmail API IMAP & SMTP	Gmail Service Advanced Gmail Service	Gmail Contextual Gadgets (Gmail web only)	Schema.org email markup
G Suite	Admin SDK	Admin SDK Services	Apps Marketplace	Integrate with Google button
Google+	Google+ API (Mostly read-only) Google+ Domains API (G Suite domains only)	Google+ Service (Mostly read-only) Google+ Domains Service (G Suite domains only)	App Activities Interactive posts	Sign-in Share button +1 button (Web only) Badge (Web only) Embedded posts (Web only) Follow button (Web only) Content recommendations (Mobile web only)
Groups	Admin SDK Directory API (G Suite only) Admin SDK Groups Settings API (G Suite only)	Groups Service (Read-only) Admin SDK Directory Service (G Suite only) Admin SDK Groups Settings Service (G Suite only)	N/A	N/A
Hangouts	Hangouts API (Hangout Apps only)	N/A	Hangout Apps (Web video hangouts only)	Hangout button
Keep	No developer products available.
Sheets	Sheets API Drive API (File-level metadata, import/export)	Spreadsheet Service Drive Service (File-level metadata) Advanced Drive Service (File-level metadata, import/export)	Add-ons	Embeddable (via Drive API)
Sites	Sites API	Sites Service	Sites Gadgets Apps Script Gadgets	N/A
Slides	Slides API Drive API (File-level metadata, import/export)	Drive Service (File-level metadata) Advanced Drive Service (File-level metadata, import/export)	N/A	Embeddable (via Drive API)
Tasks	Tasks API	Tasks Service	N/A	N/A
Vault	No developer products available.