If your organization has an annual revenue of less than one million dollars, you do not have to donate to me to use E_Cat.

If you aren't going to donate to me, you do have to do a good deed instead. You can volunteer your time at a local non-profit organization. Help out at a food pantry or hospital. Hold the door open for someone. Be extra nice to that person at your company, dorm or neighborhood with whom nobody else gets along. Donate blood. It just has to be something you wouldn't normally do. Also, it can't be donating money. You have to do something. You could even customize your software for some local school or organization. After you've performed your good deed, you have to let me know what it was.

E_Cat is not freeware, it is "deedware."