It is well known that you can use or create your own custom actions to be used on our workflows.
I'll try to research about all kind of custom actions, that perhaps could useful on some of our workflows.
You are free to participate on these post collaborating with this list.
ULS Log
Description
This is a sample to create a custom action so as to log exceptions on ULS.
Price
Free. Developer skills needed.
References
http://sharepointracks.blogspot.com/2014/08/custom-action-con-nintex-y-sharepoint.html
AutoTag
Description
WAND, Inc., a provider of taxonomies and the DataFacet Automatic Tagging Solution for SharePoint, has announced its integration with Nintex Workflow.
Price
Not Free. U$S ?
References
http://idm.net.au/blog/009159-wand-adds-automatic-tagging-nintex-workflow
Signatures
Description
CoSign connector can be used within a Nintex designer as a custom action, or as a “custom task” in a Nintex “to-do” task. Within Nintex workflows:
AutoSign with CoSign and Verify with CoSign are custom actions.
Signing with CoSign is a custom task that can be used within a native Nintex To-Do task.
Price
Not Free. U$S ?
References
https://www.arx.com/files/DOCUMENTS/CoSign_Connector_for_Nintex_User_Guide_v6.5.pdf
ERP SAP
Description
ERPConnect Services simplifies the integration of SAP data into your SharePoint solution. Customers that use Nintex Workflow in their SharePoint environment can utilize ERPConnect Services to access data in their SAP system..
Price
> U$S 6,000
http://theobald-software.com/en/erpconnect-services-price-order.html
References
Get ListItem attachments
Description
This custom action is capable to get attachments from a listitem.
Price
Free
References