Useful Distinction - Freeware vs Shareware vs Open Source

It is essential to be aware of the following distinction :

• Freeware : Software that is free and that could be downloaded for free from the internet and with no issues of sharing
• Shareware : Software that could be downloaded for free from the internet but which comes with a limited trial validity
• Open Source : Software that could be downloaded for free from the internet and that which comes with the source code also. Open source could further be shared, redistrbuted, modified by the user.