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Kirby License Agreement

Published: November 28, 2023
Source: https://getkirby.com/license/2023-11-28

About this Agreement

While Kirby's source code is publicly available, Kirby is not free. To use Kirby in production, you need to purchase a license.

This End User License Agreement (the "Agreement") is fundamental to the relationship between you and us. Therefore we recommend to read this Agreement carefully before you download, install or use Kirby.

If you do not agree to this Agreement, please do not download, install or use Kirby. Installation or use of Kirby signifies that you have read, understood, and agreed to be bound by this Agreement.

Summary

This section summarizes the most important conditions of this Agreement to give you a quick overview:

  • With your purchase you obtain a license. A license allows you to use Kirby according to this Agreement.
  • Each project (defined by its URL) needs its own license. You need to purchase the right license for your project and/or client. You can find our license variants on https://getkirby.com/buy. In some explicitly listed cases, you can use Kirby without having to purchase a license.
  • Each license includes any Kirby version that gets released within three years from the date when you first activated your license. We also provide free security updates for older versions that may protect your project beyond three years.
  • After those three years, you can continue to use Kirby for your project with any of these versions as long as you want.
  • To use any newer version released after this time, you will need to upgrade your license.
  • Upgrading your license extends the timeframe for an additional three years during which you can use new releases. You can perform the upgrade at any time.
  • You have the right to transfer or reassign a license to another person or project if needed.
  • There are some restrictions for use of Kirby that you can find below.

For the full license details, please read the Agreement in full. Only the following sections are legally binding.

Definitions

Before we get started with the conditions of the Agreement, let's define the terms that will be used throughout it:

  • When we refer to "You", we mean the licensee. Before purchasing Kirby, that's the individual or company that has downloaded and/or installed Kirby for a Development Installation, Private Installation or Extension Demo. When used for a Public Site, the licensee is the individual or company that has purchased the Kirby license. If you work on a client project and have purchased the Kirby license for your client, you (and not the client) are the licensee.
  • When we refer to "We"/"Us"/"Our", we mean the licensor, the Content Folder GmbH & Co. KG. You can find Our company and contact information on Our contact page.
  • "Client" is the individual or company on whose behalf You create or work on a Website. This only applies if the client is not the licensee.
  • A "Website" is a single Kirby project that is defined by its domain name and root directory (e.g. https://sub.example.com or https://example.com/example/). Each (sub)domain and root directory is a separate Website, even if the projects are related in any way. Exception: If You use the cross-domain multi-language feature with the same content folder, these domains count as the same Website. You may use Kirby as a headless backend or as a static site generator. In these cases the Website is defined by the domain and root directory of the user- or visitor-facing frontend(s).
  • A "Development Installation" is a Website that is installed purely for the purposes of development and client preview. It must only be accessible by a restricted number of users (like on a personal computer, on a server in a network with restricted access or when protecting a staging website with a password that only a restricted number of users know).
  • A "Private Installation" is a Website that is installed purely for personal use. It must only be accessible by You and Your family.
  • An "Extension Demo" is a Website with the single purpose to showcase a free or commercial Kirby theme or Kirby plugin, as long as that Website only contains demo content. If the showcased extension is a Kirby theme, the demo content must be exactly as shipped with the theme. Demos for Kirby plugins may not contain any additional content that is not needed to showcase the plugin in use.
  • A "Public Site" is a Website that is neither a Development Installation, a Private Installation nor an Extension Demo.
  • A "Minor Release" is a stable Kirby release which adds smaller new features, minor functionality enhancements or bug fixes. This class of release is identified by the change of the revision to the right of the first decimal point, e.g. 4.1 to 4.2, 4.X.1 to 4.X.2.
  • A "Major Release" is a stable Kirby release which incorporates major new features or enhancements that increase or change the core functionality of Kirby to a larger extent. It may also deprecate existing parts of the Source Code or change them in a breaking way. This class of release is identified by the change of the revision to the left of the first decimal point, e.g. 4.X to 5.0.
  • A "Major Generation" is defined as all releases that share the revision to the left of the first decimal point, e.g. 4.0.0, 4.0.X, 4.X.0 and 4.X.X.
  • The "Source Code" is defined as the contents of all files that are provided with Kirby and that make Kirby work. This includes (but is not limited to) all PHP, JavaScript, JSON, HTML and CSS files as well as all related image and other media files.
  • The "Activation Date" determines the included updates. It is defined like this:
    • For a newly purchased license, it is the date when the license was first activated for use with a Public Site.
    • When You upgrade an already activated license, it is the date on which the upgrade was performed in Our license hub. If the license is still within the Included Updates Period, the Activation Date of the upgrade license will be set to the end of the Included Updates Period of the existing license.
    • When You upgrade a license that had not been activated before, the upgrade license adopts the unactivated state of the existing license. The Activation Date is set on first activation for use with a Public Site.
  • The "Included Updates Period" is the time span of three (3) years after the Activation Date.
  • Licensees (You), Clients and Websites are "Qualified" if they satisfy the purchase requirements from the "Order Process" section of this Agreement.

Every time you see one of these capitalized terms in the following text, it has the meaning that has been explained above.

Usage for a Public Site

Installing Kirby on or using it for a Public Site requires a paid license. Once a paid license is needed, the license must be immediately activated to the Public Site’s domain name and root directory via our license hub or the activation feature in the Kirby Panel.

As Kirby is software and software is intangible, We don't sell it as such. Instead, this Agreement grants a license for each purchase to install and use a single instance of Kirby on a specific Website. Additional Kirby licenses must be purchased in order to install and use Kirby on additional Websites.

The license is non-exclusive (meaning that You are not the only one to whom We will issue a license) and generally non-transferable (meaning that the one who purchases the license is the licensee).

On request, We will transfer a license to anyone who would be allowed and Qualified to purchase the license by law and this Agreement. The new licensee will take over all rights and obligations of this Agreement from You at the moment We confirm the license transfer.

We will also reassign a license to another Qualified Website domain and root directory, if You confirm that the previous Website is no longer in operation and will not be operated with the same license in the future.

If the new licensee, Website or Client in a transfer or reassignment is not Qualified for the existing license, You or the new licensee need to upgrade the license to the qualifying terms and conditions before the transfer or reassignment can be performed.

Note

If you need to transfer your Kirby license to another individual or company (for example to your client or a new agency) or reassign it to a different project, please get in touch directly at [email protected].

A license is valid for all Major Releases that We publish before the end of the Included Updates Period. It is also valid for all releases in those Major Generations independent of their release date. Whether a release is a Minor Release or Major Release is at Our sole discretion.

The use of releases in Major Generations that We publish after the Included Updates Period requires a paid license upgrade. An upgrade license replaces the existing license.

Order Process

Our order process is conducted by Our online reseller Paddle.com. Paddle.com is the Merchant of Record for all Our orders. Paddle provides all customer service inquiries and handles returns.

When purchasing a license, You are responsible to choose the right license based on You and the Website project. Different license variants can come with certain requirements towards You and/or the Website project. We publish all such requirements on https://getkirby.com/buy in a way that makes them clearly visible before the purchase. With Your purchase, You confirm that You and the Website project qualify for the selected license variant.

If the Website is created for a Client, You need to make sure that the Client qualifies for the selected license.

If You purchase licenses in advance, You need to ensure to only use the license(s) for projects that satisfy the requirements for the selected license variant(s).

We reserve the right to verify at any time after the purchase whether You, the Website and (if applicable) the Client are Qualified. Changes to the situation of You, the Website or the Client as well as changes to the published information on Our "Buy" page after the purchase or after the assignment to a Client do not take effect on an existing license unless You upgrade the license or We transfer or reassign the license on Your request.

Free Licenses

Kirby can be used for free in the following cases.

Note

Please note that the restrictions and all other clauses of this Agreement also apply to free licenses. You may especially not alter or circumvent the licensing features.

Usage for a Development Installation

We believe that it should be possible to test and evaluate software before having to purchase a license. Also, We understand that a web project first needs to be built in a protected environment before it can be published.

Therefore, installing and using Kirby on a personal computer (like a desktop PC, notebook or tablet) or server for a Development Installation is free for as long as You need.

Note

The usage of Kirby in production (with the intention to handle production data or content) is never considered a Development Installation, even in internal apps or systems.

Usage for a Private Installation

You may also install and use Kirby for free in Private Installations as long as they are not accessible by anyone except You and Your family.

Note

Our definition of a Private Installation allows the following use cases:

  • Private sites for personal use, for example:
    • Apps for You personally (like a personal diary)
    • Apps for You as a freelancer (like a bookkeeping, invoicing or project management app)
    • Apps for Your family (like a private photo gallery)
  • Experimental local Kirby setups for Your personal use (for example to try out Kirby features)

However, the following use cases are not covered and need a paid license:

  • Intranets for companies, authorities or organizations, no matter if on a local or public server
  • (Internal) apps for teams or entire companies, authorities or organizations
  • Websites that are accessible by the public, even for personal/non-commercial purposes
  • Use of Kirby as a local CMS for a static or headless site without a license for the frontend domain(s)

Usage for an Extension Demo

Extension Demos are not real Websites. We want to encourage you to build and showcase your themes and plugins.

Therefore, You may operate Extension Demos without purchasing a license.

Note

Please note that this does not apply to store fronts or other types of sites used to promote free or commercial themes or plugins. If such a site is built with Kirby as well, it is a Public Site and needs a paid license.

Restrictions

Legal Restrictions

You may only use Kirby in a manner that complies with any and all applicable laws in the jurisdictions in which You use Kirby. Please respect all applicable restrictions concerning privacy and intellectual property rights.

Making Copies

You may make copies of Kirby in any machine readable form solely for the following purposes, provided that You reproduce Kirby in its original form and with all proprietary notices on the copy:

  • when deploying a Website to a server,
  • when developing a Website on a personal computer or server,
  • when working on code contributions to Kirby or
  • as a backup.

You may not reproduce Kirby or its Source Code, in whole or in part, for any other purpose.

Modification of the Source Code

You may alter, modify or extend the Source Code for Your own use or with the intention to contribute Your changes back to Kirby. You may also commission a third party to perform those modifications for You.

However You may not:

  • alter or circumvent the licensing features, including (but not limited to) the license validation and payment prompts or
  • resell, redistribute or transfer the modified or derivative version.

Note

Please note that We can't provide technical support for modified or derivative versions of the Source Code.

Your Relationship to Third Parties

You are generally not allowed to sell, assign, license, disclose, distribute, or otherwise transfer or make available Kirby or its Source Code, in whole or in part, in any form to any third parties.

The following cases are exempted from this restriction:

  • Kirby licenses may be transferred to a new licensee by requesting the transfer from Us (see above).
  • You may create Websites for third parties (e.g. as an agency or freelancer for a client). Together with this Website, You may bill Your client for the used Kirby license. You may also include the license price in a flat rate. Please note that the licensee in both of these cases is still You unless You request to transfer the license to Your client. If Your price exceeds the price You paid to Us, You need to give Your client the option to purchase the license directly from Us.
  • You may make Kirby available to customers via a Software-as-a-Service (SaaS) offering, provided You ensure that each Website has a valid Kirby license purchased either by You or Your customer. If multiple customers share a Website, each customer needs at least one license. Your offering must not appear to be provided or officially endorsed by Us.
  • You may make a Kirby installation available to employees or partners of You or Your Website client. You may also disclose and distribute Kirby’s Source Code to Your client together with the source code of the Website You created for them.
  • You may disclose the Source Code to individuals or companies that are involved in the development or operation of Your Website (e.g. agencies, design or development freelancers, hosting providers or administrators).

Note

E.g. the following cases are explicitly not allowed:

  • Selling, licensing or distributing a new product based on Kirby that modifies or hides Kirby’s identity as a Content Management System (CMS)
  • Forking Kirby and selling the modified version (see above)
  • Buying licenses in bulk and reselling them in your own shop
  • Bundling or including Kirby’s Source Code in the publication and/or distribution of a Website’s source code or a (free or paid) theme or plugin (please use Git submodules or Composer or provide a link to Our repository or website instead)

Disallowed Uses

The following uses of Kirby are not covered by this Agreement and will result in the termination of the license:

  • Direct or indirect use of Kirby in critical infrastructure (e.g. water and energy services, public health, financial services, public security services) or high-risk environments (e.g. handling of harmful or dangerous materials). The use in Websites without connection to core processes is allowed.
  • Use of Kirby for Websites that contain misinformation, hate speech or discriminating content based on age, gender, gender identity, race, sexuality, religion, nationality, serious illnesses or disabilities, no matter who authored this content. Misinformation is defined as content that is false or misleading and may lead to significant risk of physical or societal harm.
  • Use of Kirby by companies or individuals who:
    • lobby for, promote, derive a majority of income from or are significantly invested in:
      • the production of tobacco or weapons,
      • any prison or jail operated for profit,
      • any action or facility that supports or contributes to:
        • gambling, adversely addictive behaviours or
        • deforestation.
    • lobby against, or derive a majority of income from actions that discourage or frustrate:
      • peace,
      • access to the rights set out in the Universal Declaration of Human Rights and the Convention on the Rights of the Child,
      • peaceful assembly and association (including worker associations),
      • a safe environment or action to curtail the use of fossil fuels or to prevent climate change or
      • democratic processes.

Other Restrictions

You may also not:

  • extract parts of the Source Code for use in other programs or projects (unless the code file in question is explicitly licensed under the terms of the MIT license) or
  • remove or alter any proprietary notices on Kirby.

Technical Support

Technical support is provided as described on Our website at https://getkirby.com. No representations or guarantees are made regarding the response time in which support questions are answered, however We will do Our best to respond quickly.

For each Major Generation, We aim to provide security support for three (3) years after the Major Release. Security support means that We will provide free security updates for the supported releases, which will include fixes for security vulnerabilities according to the following rules: - We published a security advisory on https://getkirby.com/security within the respective security support period. We will publish vulnerabilities on this page as soon as they are known to Us and an official fix for any supported release is available. - The latest release of the supported Major Generation is affected by the vulnerability.

With each vulnerability, We aim to publish the security advisory and security updates for all supported Major Generations at the same time.

Note

You can find up-to-date information on our currently supported versions in our public security policy.

We reserve the right to limit technical support for free licenses.

Refund Policy

We offer a 14-day, money back refund policy if Kirby didn't work out for Your project.

Note

If you need a refund, please get in touch directly at [email protected].

No Warranty

KIRBY IS OFFERED ON AN "AS-IS" BASIS AND NO WARRANTY, EITHER EXPRESSED OR IMPLIED, IS GIVEN. WE EXPRESSLY DISCLAIM ALL WARRANTIES OF ANY KIND, WHETHER EXPRESSED OR IMPLIED, INCLUDING, BUT NOT LIMITED TO THE IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. YOU ASSUME ALL RISK ASSOCIATED WITH THE QUALITY, PERFORMANCE, INSTALLATION AND USE OF KIRBY INCLUDING, BUT NOT LIMITED TO, THE RISKS OF PROGRAM ERRORS, DAMAGE TO EQUIPMENT, LOSS OF DATA OR SOFTWARE PROGRAMS, OR UNAVAILABILITY OR INTERRUPTION OF OPERATIONS. YOU ARE SOLELY RESPONSIBLE FOR DETERMINING THE APPROPRIATENESS OF USE OF KIRBY AND ASSUME ALL RISKS ASSOCIATED WITH ITS USE. THIS PARAGRAPH ALSO APPLIES TO YOU IF YOU ARE NOT THE LICENSEE (E.G. IF YOU USE KIRBY WHILE SOMEONE ELSE IS THE LICENSEE).

Term, Termination and Modification

You may indefinitely use all Kirby versions that are covered by Your license under this Agreement until either party terminates this Agreement as described in this section.

You may terminate the Agreement at any time.

We may only terminate the Agreement if You or any individual or company who works with Kirby or uses it on Your behalf has violated or failed to comply with terms of this Agreement. If Your compliance with the Agreement can be restored by fixing the violation or non-compliance, We will first contact You with information on the specific term that was violated or not complied with and will allow reasonable time of at least 14 days before We will decide on a license termination. Should We be in the position to terminate a license according to this paragraph, other or all licenses granted to You may be terminated for the same reason(s) at the same time or at any later date.

Termination takes effect upon notice to the other party in textual form (via email or letter). Upon termination, the specified licenses granted to You will terminate, and You will immediately uninstall and cease all use of Kirby. If not all licenses are terminated, You may continue to use Kirby for the Websites with active licenses. The sections entitled "No Warranty", "Indemnification" and "Limitation of Liability" will survive any termination of this Agreement.

We may modify Kirby and this Agreement with notice to You either via email or by publishing content on the Kirby website at https://getkirby.com, including but not limited to changing the functionality or appearance of Kirby. Any such modification will become binding on You unless You terminate this Agreement. Changes to this Agreement that constrain Your rights to a great extent will only become effective with Your approval in textual or electronic form.

Indemnification

By accepting the Agreement, you agree to indemnify and otherwise hold harmless Us as well as Our officers, employees, agents, subsidiaries, affiliates and other partners from any direct, indirect, incidental, special, consequential or exemplary damages arising out of, relating to, or resulting from your use of Kirby or any other matter relating to Kirby. This paragraph also applies to you if you are not the licensee (e.g. if you use Kirby while someone else is the licensee).

Limitation of Liability

YOU EXPRESSLY UNDERSTAND AND AGREE THAT WE SHALL NOT BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, CONSEQUENTIAL OR EXEMPLARY DAMAGES, INCLUDING BUT NOT LIMITED TO, DAMAGES FOR LOSS OF PROFITS, GOODWILL, USE, DATA OR OTHER INTANGIBLE LOSSES (EVEN IF WE HAVE BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES). SOME JURISDICTIONS DO NOT ALLOW THE EXCLUSION OF THE LIMITATION OR EXCLUSION OF LIABILITY FOR INCIDENTAL OR CONSEQUENTIAL DAMAGES. ACCORDINGLY, SOME OF THE ABOVE LIMITATIONS MAY NOT APPLY TO YOU. IN NO EVENT WILL OUR TOTAL CUMULATIVE DAMAGES EXCEED THE FEES YOU PAID TO US UNDER THIS AGREEMENT IN THE MOST RECENT TWELVE-MONTH PERIOD. THIS PARAGRAPH ALSO APPLIES TO YOU IF YOU ARE NOT THE LICENSEE (E.G. IF YOU USE KIRBY WHILE SOMEONE ELSE IS THE LICENSEE).

All Rights Reserved

Bastian Allgeier owns all rights, title and interest to Kirby (including all intellectual property rights) and reserves all rights to Kirby that are not expressly granted in this Agreement.

In the event that Kirby will no longer be actively maintained, Bastian Allgeier will provide the Source Code under the terms of a free and open source software (FOSS) license as far as legally and contractually possible.

Applicable Law & Place of Jurisdiction

  1. For all disputes arising out of or in connection with this Agreement, the courts competent for Neckargemünd, Germany, shall have exclusive jurisdiction. However, We shall have the choice to file lawsuits against You before the courts competent for Your place of business.
  2. If You reside in Germany, para. 1 shall only apply if You are a merchant, a legal entity under public law or a special fund under public law.
  3. If You don't reside in Germany, but in a different member state of the European Union, para. 1 shall only apply if You are not a consumer under Art. 17 of the regulation (EU) No. 1215/2012. In that case, You shall be entitled to file actions against Us either at Our place of business or at the courts competent at the place where You usually reside. We, on the other hand, are only entitled to bring proceedings against You in the courts of the Member State in which You are domiciled.
  4. If You neither reside in Germany nor in a member state of the EU, the applicability of para. 1 remains unaffected.

Severability Clause

Should any provision of this Agreement be or become invalid, void or unenforceable, in whole or in part, at present or in the future, this shall not affect the validity of the remaining provisions of this Agreement. The same shall apply if a gap requiring supplementation arises after conclusion of this Agreement. The parties shall replace the invalid, void or unenforceable provision or gap requiring filling by a valid provision which in its legal or economic content takes account of the invalid, void provision and the overall content of the agreement. § Section 139 of the German Civil Code (partial invalidity) is expressly waived.

Questions?

Due to Kirby's flexibility, you may have special use cases or requirements that don't fit this Agreement.

If that's the case or if you have any questions, feel free to get in touch. We are happy to think outside the box and find custom license solutions for your creative application of Kirby.