Cisco ACI - Application Centric Infrastructure (ACI) simplifies, optimizes, and accelerates the application deployment lifecycle in next-generation data centers and clouds.

Documize - Enterprise-grade wiki and knowledge management platform

ManageEngine OpManager - Monitors routers, switches, firewalls, load-balancers, wireless LAN controllers, servers, VMs, printers, storage devices, and everything that has an IP and is connected to the network.

HackMD - Fast and flexible, real-time collaborative markdown, inspired by Hackpad.

DCImanager - DCImanager is a platform for managing physical equipment. Connect any physical equipment to a single platform. Use the platform to manage your servers, switches, PDU as well as physical and virtual networks.

ReadTheDocs - Spend your time on writing high quality documentation, not on the tools to make your documentation work.