When using open-source software, it's crucial to understand licensing requirements. Open-source licenses vary in how they handle distribution, modification, and attribution, offering different levels of freedom and restrictions. For closed-source projects, certain licenses are more suitable. The MIT License and Apache License 2.0 allow use in proprietary applications without disclosing source code. Proprietary or commercial licenses can also be purchased from vendors like Oracle (for MySQL). It's essential to choose the right license to ensure compliance with usage requirements.

Source: https://dev.to/truongpx396/must-notes-when-using-open-sources-4m62