Google Docs

A powerful document creation platform. Supports features such as: realtime collaboration, offline document editing, inline document comments, search and full differential changelog. Free for personal use, costs for commercial

     

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Hackpad

A lightweight, markdown based, document creation platform packed full of features such as: realtime collaboration, offline document reading (via dropbox), in documment comments, search / tagging and full diff'd changelog. Private workspaces free for the first 5 users, Public workspaces always free.

     

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Instrumental

Instrumental is a real-time, high-scale application and server monitoring tool with intelligent alerts, a powerful query language, and free development accounts.

     

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NGINX Amplify

Amplify is free monitoring tool for NGINX. Amplify offers extended NGINX metric collection, visualization, monitoring, and a static analyzer for NGINX configuration. It's simple to set up, yet powerful enough to bring the much needed insight into NGINX performance. Amplify is a SaaS developed and operated by Nginx, Inc. Keep NGINX up to date and secure with a native monitoring solution.

     

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