Applying an open license allows others to reuse your work while letting you maintain copyright.

• Data Licenses: The Creative Commons (CC) family is standard for data.

  • CC-0: Unrestricted reuse without attribution required.

  • CC-BY: Allows reuse and derivatives but requires author attribution.

  • CC-BY-SA: Requires derivatives to use the exact same open license.

  • CC-BY-ND: Prohibits derivative works.

• Software Licenses: Never release software as simple "Freeware," as default copyright prevents users from modifying it. Instead, use:

  • Permissive Licenses (e.g., MIT, Apache 2.0): Allow users to modify and distribute the code freely, provided they preserve the original copyright notices.

  • Copyleft Licenses (e.g., GNU GPL): Allow modification, but strictly require that any derivative works are released under the exact same open-source terms