A copyleft license for articles, wikis, documentation, and creative content.
Full License Text
CaelLab BY-SA Content License
Copyright (c) [YEAR] [AUTHOR]
Permission is hereby granted, free of charge, to any person obtaining a copy
of this work (the "Work"), to use, copy, modify, merge, publish, distribute,
sublicense, and/or sell copies of the Work, for personal, commercial, or
non-commercial purposes, subject to the following conditions:
1. Attribution: You must give appropriate credit to the original author(s),
provide a link to this license, and indicate if changes were made.
You may do so in any reasonable manner, but not in any way that suggests
the licensor endorses you or your use.
2. ShareAlike: If you remix, transform, or build upon the Work, you must
distribute your contributions under the same CaelLab BY-SA Content License.
3. No Additional Restrictions: You may not apply legal terms or technological
measures that legally restrict others from doing anything the license permits.
THE WORK IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
What You Can Do
💻
Commercial Use
Use in commercial publications, courses, and products.
🔧
Adapt
Remix, translate, expand, or build upon the original work.
📦
Share
Redistribute in any medium or format, online or offline.
🔒
Private Use
Use internally without any obligation to share changes.
What You Must Do
Attribution. Credit the original author(s), link to the license, and indicate if you made changes. Do not suggest endorsement.
ShareAlike. Any distributed adaptation must be licensed under the same CaelLab BY-SA Content License. This keeps the commons growing.
No Additional Restrictions. Do not add DRM, contractual terms, or technological measures that restrict what the license permits.
Comparison
Feature
CC BY
CC BY-SA 4.0
CaelLab BY-SA Content
Commercial use
✓
✓
✓
Private use
✓
✓
✓
Adaptation
✓
✓
✓
Distribution
✓
✓
✓
Closed adaptations
✓
✗
✗
License length
Short
Long
Short
Examples
Add this notice to your work:
Article / Wiki Page
This work is licensed under the CaelLab BY-SA Content License.
Copyright (c) 2026 [Your Name]
Source: [https://your-page-link]
Or include a LICENSE file at the root of your repository containing the full license text above.
FAQ
Does this apply to wikis and encyclopedias? Yes. The term "Work" covers articles, documentation, educational material, and any text-based creative content.
Can I use this in a commercial book? Yes. You may sell, publish, or include the work in commercial products, as long as you attribute and share adaptations under the same license.
What if I only use a small excerpt? Fair use and fair dealing exceptions still apply. The license only governs uses that require permission under copyright law.
Can I dual-license? The license text does not explicitly allow dual-licensing. If you need that, consider using a standard license or adding a specific clause.