# Key library

Different systems have different key formats, for example some systems use simple username and password where as other systems use more complex token based authentication. Details of different systems can be found below:

* [Peoplevox](/creating-streams/systems/system-library/peoplevox-integration-functions.md#authentication)

Additional information available:

* [Shopify](/creating-streams/keys-1/key-library/shopify-private-apps-1.md)
* [Netsuite](/creating-streams/keys-1/key-library/netsuite.md)
* [FTP](/creating-streams/keys-1/key-library/ftp-and-sftp.md)
* [oAuth](/creating-streams/keys-1/key-library/oauth.md)


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