Overlay Studio Community Edition — Free Use License v1.0 Copyright (c) 2026 Jessie Zhou. All rights reserved. This software is source-available and free to use; videos you make with it are yours and may be used commercially. The software itself may not be resold or commercially redistributed, so this is not an open-source (OSI) license. The Chinese text (公开版授权协议.txt) is the authoritative version; this English text is provided for convenience. -------------------------------------------------------------------------- 1. ACCEPTANCE -------------------------------------------------------------------------- By downloading, copying, installing, running, or modifying this software, you accept all terms below. If you do not accept them, do not use it. -------------------------------------------------------------------------- 2. WHAT YOU MAY DO -------------------------------------------------------------------------- 2.1 USE IT FREELY, FOR ANY PURPOSE. Install and run it on any number of devices. Individuals, teams, companies, schools and institutions may all use it at no cost, without applying for permission. Use inside a commercial organization (for example, a marketing team producing its own promotional videos) is permitted. 2.2 MODIFY IT FOR YOUR OWN USE. Add or remove effect cards, change colors, adjust styles, wire it into your own workflow. 2.3 WHAT YOU MAKE WITH IT IS ENTIRELY YOURS. Overlay layers, rendered video, and any other output produced with this software belong to you and may be used for any commercial purpose (advertising, paid courses, client work, and so on) with no additional fee, no attribution requirement, and no restriction under this license. 2.4 SHARE IT FOR FREE. You may pass along unmodified copies, host mirrors, or share it in file-storage services, provided that you keep this license file and the copyright notice intact, charge nothing for it, and do not bundle it into any paid product or service. Section 2.3 is the entire point of this software. What you make is yours. -------------------------------------------------------------------------- 3. WHAT YOU MAY NOT DO -------------------------------------------------------------------------- 3.1 NO SELLING. You may not sell this software or any modified version of it, nor supply it as, or as part of, a paid product, paid service, subscription, paid course, paid community, or membership benefit. 3.2 NO OFFERING IT AS A SERVICE. You may not use this software to build a competing product or service offered to third parties (including SaaS, websites, mini-programs, or tools distributed inside a paid group), whether or not you charge for it directly. 3.3 NO REBRANDING. You may not remove or alter the copyright notice or this license file, and you may not rename the software and present it as your own original work. 3.4 NO MODEL TRAINING. You may not use this source code to train machine learning models or distribute it as part of a dataset. In short: use it however you like and earn whatever you can with it — just do not sell the software itself. -------------------------------------------------------------------------- 4. CONTRIBUTIONS -------------------------------------------------------------------------- For any code, effect card, or documentation you submit to this project ("your contribution"), once the author merges it, you grant the author a perpetual, worldwide, royalty-free, irrevocable license to use your contribution in ALL versions of this software, INCLUDING COMMERCIAL VERSIONS THE AUTHOR SELLS. You keep the copyright in your contribution and remain free to use it elsewhere. In return: anyone whose contribution is merged receives a free license to the paid edition. -------------------------------------------------------------------------- 5. FONTS AND SOUND EFFECTS -------------------------------------------------------------------------- This software ships with no font or sound files. Licensing terms for fonts and sound effects vary, and many assets labelled "free for commercial use" do not permit redistribution bundled with software. Any fonts or sounds you add yourself are governed by their own licenses, not by this one. Confirm that their terms cover your intended use. -------------------------------------------------------------------------- 6. GENERAL -------------------------------------------------------------------------- 6.1 NO OTHER RIGHTS. This license does not permit you to sublicense or transfer it to anyone else, and it does not prevent the author from licensing this software to anyone else on other terms. Any right not expressly granted is reserved. 6.2 CURE PERIOD. The first time you are notified in writing that you have violated these terms, your license may continue if you come into full compliance and take practical steps to correct past violations within 32 days of receiving that notice. Otherwise your license ends immediately and you must stop using the software and delete all copies. 6.3 NO LIABILITY. AS FAR AS THE LAW ALLOWS, THE SOFTWARE COMES AS IS, WITHOUT ANY WARRANTY OR CONDITION, AND THE AUTHOR WILL NOT BE LIABLE TO ANYONE FOR ANY DAMAGES RELATED TO THIS SOFTWARE OR THIS LICENSE, UNDER ANY KIND OF LEGAL CLAIM. 6.4 COMMERCIAL LICENSING. If you need rights beyond this license — resale, white-labelling, or offering it as part of your own product or service — contact the author to arrange separate terms. -------------------------------------------------------------------------- Questions about scope are welcome before you start using it.