Docstell is adding functionality to upload files to a node. You can upload any kind of file and share with you team or keep it in a private node. Just drag it from you computer and drop it on the node you want to attach it to.
We added a preview area that makes it possible to preview files adjacent to your other information. You can view for example pdf, docx, xlsx, csv, txt, png, jpeg and mpeg4 files.
If you for example receive a specification in a pdf file format you keep this file here together with the rest of the documentation and will easily be able to preview it and let all your team have access to it.
Signup to test Docstell here https://app.docstell.com/signup