GreenSock’s standard "No Charge" license is very permissive (it even covers most commercial uses), but "Business Green" members get a comprehensive commercial license plus time-saving bonus plugins and tools. Why isn't GreenSock MIT-licensed? Find out here.
Most developers find that GSAP’s workflow features alone save them so much time that the license pays for itself literally in a matter of days. After factoring in the bonus plugins and the performance boost, the expense quickly turns into profit.
Our paid license is only necessary in projects that you sell to multiple end users. That's it. Even if you charge your client a million dollars for whatever you create for them, it's fine to use GreenSock tools under the standard license as long as it's a one-off project.
We realize that some legal departments can be quite picky and enterprise institutions have a unique set of needs, so if our standard "BusinessGreen" license isn't quite what you need, check out our Enterprise Licensing page.
| License | Standard | Business |
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  Usage in 100% free apps, games, sites, and other software even if you charge a fee to develop these products |
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Distribution of GreenSock files as a part of your Work Product |
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| Usage in web sites or products that require a fee to use or join (NetFlix.com, Ancestry.com, eHarmony.com, etc.) | ||
| Usage in games or products that are sold to multiple end users | ||
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Usage in games or other apps that use micro-transactions for optional features/upgrades |
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Usage of members-only tools like ThrowPropsPlugin, Physics2DPlugin, etc. |
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GreenSock's dual licensing model keeps it extremely accessible and completely free for the vast majority of use cases while at the same time providing a small funding mechanism that sustains ongoing support, innovation, and sustainability. The web is littered with abandoned "open source" projects, but GreenSock has a years-long track record of commitment to the platform. Some of the largest companies in the world trust GreenSock tools in their business-critical applications every day. Learn about the "why" behind the GreenSock license here.
Looks like you're covered by the standard no-charge license. Yay! When you're ready to take your animations to the next level, join Club GreenSock to gain access to the time-saving bonus plugins. Until then, happy tweening!
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Includes access to DrawSVG, Physics2D, PhysicsProps, ScrambleText, CustomBounce, and CustomWiggle for one developer. Use GreenSock tools in an unlimited number of projects that don't require the commercial license. See our licensing page for details.
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Includes access to all of the bonus plugins for one developer! Use GreenSock tools in an unlimited number of projects that don't require the commercial license. See our licensing page for details.
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A Single Developer Business Green membership includes access to all of the bonus plugins and a commercial license for one developer to use GreenSock tools in an unlimited number of projects while the license is active.
The commercial license fully covers your unedited Work Products even after being sold/resold! No need to register each project or user. Just please keep your license active until you stop collecting fees related to the GreenSock-powered site/product(s). If your customer needs to edit your Work Product, they should get their own license. See our licensing page for details.
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A multi-developer Business Green membership includes access to all of the bonus plugins and a commercial license for however many developers you sign up for to use GreenSock tools in an unlimited number of projects while the license is active.
The commercial license fully covers your unedited Work Products even after being sold/resold! No need to register each project or user. Just please keep your license active until you stop collecting fees related to the GreenSock-powered site/product(s). If your customer needs to edit your Work Product, they should get their own license. See our licensing page for details.
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An Enterprise license gets you stronger warranties, indemification, condientiality, and it permits some customization of the licensing terms. Please contact us for pricing.
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requestAnimationFrame (when available) for maximum efficiency. See for yourself in Chrome Dev Tools - you should see very snappy performance in the timeline. Many other tools like jQuery UI use top/left properties for positioning which don't generally perform as well. These tools have been fully "GreenSocked" so performance is smoking fast, just like the core tweening engine.
LoaderMax is included in the main AS3 GreenSock download zip.
No need to worry. Tweens and timelines are automatically made eligible for garbage collection (gc) when appropriate (typically when they finish but if you maintain a reference to an instance so that you can restart it later, for example, it won’t be gc’d out from under you). Basically the system manages gc for you and generally cleans up after itself.