Freeware are the software, which permits redistribution but not modification, and their source code is not available. These packages are not free software, therefore do not use the word freeware to refer to free software.
You can also say that, freeware is generally used for software, which is available free of cost and which allows copying and further distribution, but not modification and whose source code is not available.
Freeware is distributed in binary form without any licensing fee.
In some instances the right to use the software is limited to certain types of users, for instance, for private and non-commercial purposes.
Freeware is often used in marketing situations in order to sell additional products and to gain market advantages.