Fork You: When Open Source Goes Bad

One of the open source solutions that I know and love removed the core functionality of their system from their open source version. What to do when open source solutions go from useful to useless as they try to commercialize their software platform offerings.
What is open source software and how do we all benefit from it?

Open source software is available for free (sometimes freemium versions exist) and allows you to install it on your own servers for unlimited users.