Folder synchronisation for on-premises SharePoint document libraries

Hi Pieter Veenstra,

Are you looking for an OOTB 3rd party solution or dirtying hands in some customization is an option for you?

For client side SharePoint customizations we use Node.js and Gulp tasks infrastructure wich deals with a similar task, but from dev-side prospective. Yet, it's not a big deal to tweak the toolchain and make it work for you.

Sorry guys, for the advertisement of myself here, but below described tools seem to be perfect for such a task.

I'm talking about: 

- sppull - Node.js library for downloading documents from SharePoint (can use root-folder based, caml-based rules for detecting the documents to download, can extract metadata)

- spsave - library, which delivers documents to SharePoint

All of these are highly customizable for different business needs, can be used not just as a part of development workflow.

E.g. SPPull was used for extracting updated/new documents from SPO's record center and delivering the updates to 3rd party ERP system on schedule basis (Azure Web Job) on one of the recent projects (large enterprise located in London).

SPSave, by the way, is a part of toolchain used in PnP-JS-Core.

Tools work with SPO and On-Prem, supports all possible auth mechanisms.

Will be glad to answer questions about the architecture of the possible solution.