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What is a software license?
A software license is a set of rules that says what you are allowed to do with a piece of software.
- Category GitHub & code
- Also called open-source license, licence
- Updated 20 Oct 2026
Software license, explained simply
Every project's license tells you whether you can use it, change it, share it, or sell it.
Some licenses are very relaxed. Others ask you to share your changes under the same rules.
This matters most if you plan to use a tool in a business. Always read the license.
For example, a license might let you use a tool at work, or only for personal use.
On ITG Now, our free tool guides note the license of each tool, so you know the basic rules before you use it.
Related terms
Open sourceMIT LicenseApache 2.0GPLAGPLCopyright
Where you'll see it on ITG Now
- GuideCorridorKey: Free AI Green Screen Removal That Keeps Hair
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Questions people ask about Software license
Where do I find a project's license?
On GitHub, look for a file named LICENSE, or check the repo's About section.
Does a license cost money?
Open-source licenses are free to use. Paid software licenses can charge a fee.
What if a repo has no license?
Then by default you don't have clear permission to reuse it. Ask the owner or avoid it for business.