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NixBlox™ Designer — End User License Agreement (EULA)

First published: September 8, 2026 · version history

This End User License Agreement (“Agreement”) is a legal contract between you and NixBlox LLC, a Michigan limited liability company (“NixBlox,” “we,” “us”). It governs your use of the NixBlox Designer desktop software, including software updates and accompanying documentation provided by NixBlox (collectively, the “Software”). Websites, the organization portal, cloud storage, collaboration, AI-assisted functionality, and other online services are governed by the NixBlox Terms of Service; beta participation is also governed by the Beta Program Terms. Our Privacy Policy describes how we handle information.

By checking the acceptance box after signing in to your verified account, you agree to this Agreement. You may not activate or use the Software until you have accepted it. Installing the Software by itself does not constitute acceptance. Submitting a beta request does not constitute acceptance of this Agreement and does not authorize access; if the request form includes an acknowledgment checkbox, that acknowledgment is retained as part of the request record only. You must be at least 18 years old and legally capable of entering into this Agreement. During the beta, the Software is offered only to individuals located in the United States and organizations established in the United States; when you accept, you represent that you are located in the United States, and if you accept for an organization you separately represent that it is established in the United States.

Organization Accounts and individuals. An “Organization Account” is a workspace within the NixBlox Services. A Personal Organization Account is an account structure for one individual and is not treated as a separate legal entity; the individual’s personal acceptance governs its use. A Business Organization Account is used on behalf of a company or other legal entity; if you accept on behalf of such an entity, you represent that you have authority to bind it to this Agreement, and “you” means that entity. Acceptance in your individual capacity does not bind an entity; a Business Organization Account becomes bound only when a currently authorized administrator separately accepts the applicable agreements on its behalf, and that acceptance binds the entity to that version of the agreements until a material change requires a new one. Until that organizational acceptance exists, the Software cannot be used through that Business Organization Account. Every individual who uses the Software through any Organization Account (an “Authorized User”) must personally accept the current agreements and, in their individual capacity, comply with all provisions that by their nature apply to an individual user, including the license and use restrictions, confidentiality, Feedback, Customer Content and Acceptable Use requirements, AI and product-library rules, and Professional Responsibility provisions. The entity behind a Business Organization Account is also responsible for its Authorized Users’ use of the Software.

If paid plans are offered, purchases will be processed by the merchant of record identified at checkout under its applicable terms of sale. This Agreement governs your use of the Software, independent of any purchase transaction.

1.License Grant

Subject to this Agreement and payment of applicable fees, NixBlox grants you a limited, non-exclusive, non-transferable, non-sublicensable license to install and use the Software:

  1. for the number of seats covered by your subscription or license key;
  2. by users who are members of your Organization Account (“Org”) as recorded in the NixBlox organization portal, or, for individual licenses, by the individual to whom the license key is issued; and
  3. for your internal business or professional purposes and, during a beta, for your internal evaluation, including producing design documentation for your clients.

License keys are bound to the email address to which they are issued and may not be shared, transferred, or resold. The Software must connect to NixBlox at least once every 30 days to confirm your license status and organization sign-in (it does so automatically when online, typically at launch and periodically thereafter). Between confirmations, local desktop functionality — opening, editing, and exporting projects from local files with cached organization settings — is designed to remain available without an internet connection; cloud storage, collaboration, AI-assisted, and other online features require a connection. Past the 30-day window the Software will not operate until it can confirm again. A revoked or deactivated key stops the Software at its next confirmation. Your local project files remain yours and are never deleted by a license stop.

2.Restrictions

You may not, and may not permit anyone else to:

  1. copy, distribute, rent, lease, lend, sell, or sublicense the Software;
  2. reverse engineer, decompile, or disassemble the Software, or attempt to derive its source code, except to the extent applicable law expressly permits despite this limitation;
  3. modify the Software or create derivative works of it;
  4. circumvent, disable, or tamper with license validation, activation, or usage restrictions;
  5. share license keys or credentials outside your Org, or use the Software to operate a service bureau for third parties who are not your clients; or
  6. use the Software in violation of applicable law.

Third-party and open-source components. The Software contains components provided under third-party or open-source licenses. Those license terms apply solely to the applicable components and control to the extent they conflict with this Agreement. Required notices and license texts are included with the Software and available at https://nixblox.app/third-party-notices. Except for rights granted under those separate licenses, no rights in the Software are granted beyond this Agreement.

3.Ownership; Your Content

The Software is licensed, not sold. NixBlox LLC and its licensors retain all right, title, and interest in and to the Software, including all intellectual property rights. NixBlox™ is a trademark of NixBlox LLC.

You retain ownership of your work product. The projects, designs, drawings, bills of material, cable schedules, labels, and other output you create with the Software (“Customer Content”) remain owned by you, your organization, or the applicable third-party owner (for example, a client who commissioned the design). As between you and NixBlox, NixBlox does not acquire ownership of Customer Content merely because it is created with or stored in the Software or NixBlox cloud services. Nothing in this Agreement gives NixBlox ownership of your general skills, experience, ideas, methods, or know-how.

License to host your content. For Customer Content you store in NixBlox cloud services, you grant NixBlox a limited, non-exclusive, worldwide license to host, copy, transmit, process, and display that content solely as necessary to provide the services to your Org. This license continues while Customer Content is stored in active systems and during the limited backup, recovery, and deletion periods described in the Privacy Policy, solely to secure, maintain, recover, or delete those copies, respond to your support requests, or comply with applicable law. NixBlox’s confidentiality obligations for Customer Content are stated in the Terms of Service, Section 4.

Feedback. If you provide feedback, suggestions, bug reports, or feature requests (“Feedback”), you grant NixBlox a perpetual, irrevocable, worldwide, royalty-free, fully paid, transferable, and sublicensable non-exclusive license to use, reproduce, modify, develop, commercialize, and otherwise exploit that Feedback for any purpose, without attribution or compensation. Feedback does not include Customer Content, and this license does not transfer ownership of Customer Content. You represent that you have the right to provide the Feedback and that it does not contain another party’s confidential information.

4.Professional Responsibility

The Software is a documentation and design tool. It does not provide engineering, electrical, life-safety, code-compliance, or other professional advice, and its output is not a substitute for review by a qualified professional. AI-assisted features may propose product data and port configurations; these are suggestions drawn from published product information, may be incomplete or wrong, and must be verified like any other input before use. You are solely responsible for verifying the accuracy, completeness, safety, and code compliance of all designs and documentation produced with the Software before they are used for procurement, installation, or construction. The professional of record on your project — not NixBlox — bears responsibility for the design.

5.Cloud Services; Org Management

Use of the Software requires an Organization Account (“Org”) governed by the NixBlox Terms of Service — organization settings, org-managed projects, publishing, and license management all operate through it. Individual users receive a Personal Organization Account automatically at sign-up; a Business Organization Account is used on behalf of a legal entity. When your installation is linked to an Org, organization settings and org projects are managed by your Org’s administrators, and your access is determined by the role your Org assigns you. Unlinking an installation does not delete the Org account or its content; it only permits that installation to be linked to another Org, and an installation that remains unlinked cannot confirm its organization sign-in (Section 1). Data handling is described in the NixBlox Privacy Policy.

AI features and the product library. The Software includes optional AI-assisted features (“Block AI,” also called “Smart Import”) that suggest product data and port configurations from a product’s own published information, subject to usage limits and to your Org’s participation mode (Community, Private, or Off — described in the Privacy Policy; Off disables AI-assisted features and shared-library access for the Org). These features are designed to learn product facts, not your project designs: they extract factual information from publicly available vendor sources — manufacturer name, model number, part number, connector types, technical specifications, and the product’s public address (“Public Product Data”). Smart Import does not automatically select or upload your project files; it sends NixBlox and its AI provider the extracted text of product pages and any spec-sheet document you choose. Do not select a file or address containing project, client, personal, confidential, credential, or export-controlled information. Shared-library contributions are intended only for product facts obtained from publicly available manufacturer sources; do not contribute information taken from customer, confidential, distributor-restricted, or other non-public materials, and NixBlox may reject or remove a contribution if its source cannot be verified. Limited operational records temporarily associate product-extraction requests with your account and Org for metering, rate limiting, moderation, and abuse prevention, as described in the Privacy Policy. If contribution is enabled and you confirm a product’s port configuration, you grant NixBlox a perpetual, irrevocable, royalty-free, worldwide license to use, reproduce, modify, and distribute that product configuration data, as Public Product Data, in a shared product library available to other NixBlox users. Shared library entries contain Public Product Data only; they are not Customer Content and are not presented as originating from or associated with you or your Org. AI-generated suggestions are subject to Section 4 (Professional Responsibility).

Vendor materials. Vendor names and trademarks belong to their respective rights holders, and copyrightable images, manuals, and other materials remain protected by their owners’ rights. NixBlox does not claim ownership of vendor materials merely because they are referenced in the Software. Their display or reference does not imply endorsement or affiliation. NixBlox does not control third-party websites and does not warrant the availability, accuracy, or continued accessibility of third-party materials.

Your use of vendor materials. You are responsible for determining whether you have permission or another lawful basis to access, reproduce, or include vendor images, manuals, and other protected materials in your projects or exported deliverables. A material’s availability on a public website does not by itself grant permission to copy or redistribute it. Do not use the Software to access or reproduce materials in violation of applicable law or binding access restrictions.

6.Term, Suspension, and Termination

This Agreement is effective until terminated. Your license runs for the period covered by your subscription or license key.

If your Org’s subscription lapses or your license cannot be confirmed, the Software stops operating after the 30-day confirmation window described above (project files already stored on your device are not deleted), and full functionality is restored upon payment or a successful confirmation. NixBlox may terminate this Agreement if you materially breach it and do not cure within 30 days of notice, or immediately for breach of Sections 1, 2, or 3. Upon termination you must stop using the Software and uninstall it. Sections 3, 4, 7, 8, 9, and 10 survive termination.

Termination of this Agreement does not delete your local files; Customer Content stored locally remains yours. A user-only closure or removal within a Business Organization Account does not close that Org or trigger deletion or post-termination retention of its Customer Content. When an Organization Account itself — Personal or Business — or NixBlox’s provision of Services to it is terminated, its cloud-stored Customer Content is handled as described in the Terms of Service, Section 8: unless continued retention or access is prohibited by law, involves unlawful content, or would create a material security risk, NixBlox preserves it for 30 days after that termination, during which a verified administrator (or, for a Personal Organization Account, the account holder) may ask NixBlox for a copy of that content by contacting support@nixblox.app, which NixBlox may provide at its discretion; continued online access is not guaranteed, and after that period the content is deleted as described in the Privacy Policy.

7.Beta Software

If your license key is designated “beta,” the Software is provided for evaluation purposes, “AS IS,” and may contain defects. Beta features, file formats, and online services may change or be discontinued without notice, except that discontinuation of cloud project storage in its entirety is subject to the notice and retrieval provisions in Terms of Service Section 7, unless notice or retrieval is prohibited by law or would create a material security risk. NixBlox makes no other commitment regarding availability, data retention, or migration of beta data. Back up your projects. NixBlox may revoke beta keys at any time. Beta participation is also governed by the NixBlox Beta Program Terms (https://nixblox.app/beta-terms, in the version you accepted), which supplement this Agreement and control over it on topics specific to the beta program. This Section supplements, and does not limit, Sections 8 and 9.

8.Disclaimer of Warranties

TO THE MAXIMUM EXTENT PERMITTED BY LAW, THE SOFTWARE IS PROVIDED “AS IS” AND “AS AVAILABLE,” WITHOUT WARRANTIES OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, TITLE, NON-INFRINGEMENT, AND ANY WARRANTIES ARISING FROM COURSE OF DEALING OR USAGE OF TRADE. NIXBLOX DOES NOT WARRANT THAT THE SOFTWARE WILL BE ERROR-FREE OR UNINTERRUPTED, OR THAT ITS OUTPUT WILL BE ACCURATE OR COMPLETE. SOME JURISDICTIONS DO NOT ALLOW EXCLUSION OF IMPLIED WARRANTIES, SO SOME OF THE ABOVE MAY NOT APPLY TO YOU.

9.Limitation of Liability

TO THE MAXIMUM EXTENT PERMITTED BY LAW: (a) NIXBLOX WILL NOT BE LIABLE FOR ANY INDIRECT, INCIDENTAL, SPECIAL, CONSEQUENTIAL, OR PUNITIVE DAMAGES, OR FOR LOST PROFITS, LOST DATA, BUSINESS INTERRUPTION, OR COST OF SUBSTITUTE GOODS, ARISING OUT OF OR RELATED TO THE SOFTWARE OR THIS AGREEMENT, EVEN IF ADVISED OF THE POSSIBILITY; AND (b) NIXBLOX’S TOTAL AGGREGATE LIABILITY ARISING OUT OF OR RELATED TO THE SOFTWARE OR THIS AGREEMENT WILL NOT EXCEED THE FEES PAID OR PAYABLE UNDER AN APPLICABLE PAID SUBSCRIPTION OR ORDER FOR THE SOFTWARE DURING THE TWELVE (12) MONTHS BEFORE THE EVENT GIVING RISE TO THE CLAIM, WHETHER COLLECTED BY NIXBLOX OR ITS MERCHANT OF RECORD, OR US $50 IF NO FEES WERE PAID OR PAYABLE UNDER AN APPLICABLE PAID SUBSCRIPTION OR ORDER (AS FOR A FREE BETA LICENSE). THE CAP IN THIS SECTION IS ONE COMBINED AGGREGATE CAP FOR ALL CLAIMS ARISING OUT OF OR RELATING TO THE SOFTWARE, SERVICES, BETA SERVICES, THIS AGREEMENT, THE TERMS OF SERVICE, AND THE BETA PROGRAM TERMS. IT IS NOT A SEPARATE CAP FOR EACH CLAIM, EVENT, PRODUCT, SERVICE, OR AGREEMENT. THESE LIMITS APPLY REGARDLESS OF THE THEORY OF LIABILITY AND EVEN IF A REMEDY FAILS OF ITS ESSENTIAL PURPOSE. NOTHING IN THIS AGREEMENT LIMITS LIABILITY THAT CANNOT BE LIMITED UNDER APPLICABLE LAW. SOME JURISDICTIONS DO NOT ALLOW CERTAIN LIMITATIONS, SO SOME OF THE ABOVE MAY NOT APPLY TO YOU.

10.General

Governing law. This Agreement is governed by the laws of the State of Michigan, without regard to conflict-of-laws rules. The state courts located in Wayne County, Michigan and, where federal subject-matter jurisdiction exists, the United States District Court for the Eastern District of Michigan have exclusive jurisdiction and venue over disputes arising from it. Export. You may not use or export the Software in violation of U.S. export laws. U.S. Government users. The Software is commercial computer software; government use is subject to this Agreement per FAR 12.212 and DFARS 227.7202. Assignment. You may not assign this Agreement without NixBlox’s consent, except to a successor of your business; NixBlox may assign it to an affiliate or successor. Severability; waiver. If a provision is unenforceable, the rest remains in effect; failure to enforce is not a waiver. Updates to this Agreement. NixBlox may update this Agreement. Each version is published with its date at https://nixblox.app/eula, and prior versions remain available at the addresses recorded in your acceptance. The version of this Agreement that you most recently accepted governs your continued use of the Software. Material revisions require affirmative acceptance before continued authenticated use; installing a software update does not by itself constitute acceptance of revised legal terms. Entire agreement. This Agreement, together with the NixBlox Terms of Service and, for beta participants, the Beta Program Terms, is the entire agreement between you and NixBlox regarding the Software. The Privacy Policy describes our information practices and is not part of this Agreement. When paid plans are offered, the Refund Policy will apply to purchases.

Contact

NixBlox LLC — Taylor, Michigan, USA
Email: support@nixblox.app
Web: https://nixblox.app

Version history