ManualsLib - Just enter the keywords in the search field and find what you are looking for!

Laserfiche - Laserfiche offers powerful document management software solutions that are easy to implement and easy to use.

Dozuki - Dozuki is a web-based tool for creating and distributing step-by-step documentation.

DocuWare - DocuWare is a next-gen document management system that is specially designed for transferring paper-based and digital assets into collective resources.

Manuzoid - Repository that includes user manuals for various products

Kissflow - Kissflow is a workflow tool & business process workflow management software to automate your workflow process. Rated #1 cloud workflow software in Google Apps Marketplace.