Open Source License
MIT License
ProControls is free and open source software. You can use it in personal projects, commercial products, client work, and anything else — for free, with no royalties, licensing fees, or permission required. The only requirement is to preserve the copyright notice when distributing the library.
What this means for you as a developer
ProControls is released under the MIT License — one of the most permissive open-source
licenses available. In plain terms: you can use it in almost any project, any way you like,
for free, without asking permission.
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Use it freely — commercial or otherwise
Include ProControls in personal projects, commercial products, client work, internal tools, or educational materials. There are no royalties, no usage fees, and no requirement to ask permission first.
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Modify it
Fork the repository, patch it, extend it, or strip it down. You are not required to share your changes or publish them anywhere.
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Bundle and redistribute it
Include ProControls in your own library or framework, ship it inside a desktop app, or package it into a commercial product. Your project does not have to be open source.
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Keep the copyright notice — the one requirement
Any copy or substantial portion of ProControls you distribute must include the original MIT copyright notice and license text. In practice, leaving the comment block at the top of ProControls.js intact satisfies this — no extra steps needed if you are loading the unmodified file.
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No warranty
ProControls is provided "as is." The author makes no guarantees about correctness, fitness for a particular purpose, or anything else. If something breaks in your project, that is on you — the library is not liable.
Bottom line: use ProControls anywhere, in anything, forever, at no cost.
The only obligation is to leave the copyright notice in the file — which takes zero effort
if you load the library as-is.
MIT LicenseCopyright (c) 2026 David SteinPermission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.
THE SOFTWARE 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. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
SOFTWARE.