Open Source Policy: What To Tell Customers Before They Buy

Many SaaS, ecommerce, and platform businesses rely on open source software to build and deliver their products. Open source can speed up development and reduce costs, but it also introduces legal and customer communication challenges. A common mistake is assuming that open source means "free for any use" with no obligations. In reality, open source licenses often come with requirements that affect how you can use, modify, and distribute software. Failing to disclose these requirements to customers can lead to confusion, breach of contract claims, or even regulatory action. This guide explains what an open source policy is, why customer disclosure matters, the key legal risks, and what practical steps you should take before customers buy your product. We will provide examples, checklists, and state law caveats so you can avoid common mistakes and protect your business.

What Is an Open Source Policy?

An open source policy is a set of rules and procedures your business follows when using, modifying, or distributing open source software. For SaaS, ecommerce, and online platform businesses, an open source policy typically covers:

• How you choose and approve open source components for your product
• How you track and document all open source software in your stack
• What you disclose to customers about open source software in your product
• How you comply with open source license terms and obligations
• How you handle customer or third-party requests related to open source

Internally, a policy helps your team avoid legal risks and maintain good software hygiene. Externally, it provides transparency to customers, partners, and sometimes regulators about what is in your product and what rights or restrictions apply. For example, if your SaaS platform uses a library under the GNU General Public License (GPL), you may need to provide source code or notify customers of their rights under that license.

Without a clear policy, businesses risk violating open source licenses, which can lead to copyright infringement claims, breach of contract, or forced disclosure of proprietary code. Customers may also lose trust if they discover undisclosed open source components or unexpected restrictions after purchase. An open source policy is not just a technical document, it is a business tool that helps you manage risk and build credibility.

Example: A SaaS startup uses a GPL-licensed library to deliver a key feature. The CTO assumes that because the product is delivered as a service, there are no disclosure requirements. However, some customers request the source code, citing the AGPL license. Without a clear policy or customer notice, the startup faces confusion, customer frustration, and potential legal exposure.

Why Customer Disclosure Matters for Open Source

Transparency with customers about open source usage is not just good practice, it can be a legal requirement. The Federal Trade Commission (FTC) enforces rules against deceptive or unfair business practices, including how software products are advertised and sold. If you fail to disclose material information about open source components, such as license restrictions or obligations that affect the customer, you could face FTC scrutiny.

For example, if your SaaS product contains open source code that limits how customers can use, modify, or redistribute your software, you must clearly inform them before they buy. This is especially important if:

• The open source license requires you to provide source code or attribution
• The license restricts commercial use or imposes "copyleft" obligations
• There are security or privacy implications tied to the open source component

State laws may also require specific disclosures, especially for auto-renewing subscriptions or negative option billing. For example, California's automatic renewal law requires clear and conspicuous disclosure of material terms, which could include open source restrictions if they impact the customer's rights or experience. New York, Vermont, and other states have similar rules, and some states allow private lawsuits for failure to disclose material terms.

Common mistakes include:

• Failing to mention open source components in your terms of service or product documentation
• Using open source software with restrictive licenses without informing customers
• Assuming customers do not care about open source details
• Relying on generic or buried notices that customers are unlikely to see

Being upfront about open source usage helps build trust and reduces the risk of legal disputes or regulatory action. Customers, especially enterprise buyers, increasingly ask for open source disclosures as part of their procurement process.

Practical Example: An ecommerce platform integrates a payment processing library under a license that requires attribution and prohibits commercial redistribution. The company fails to disclose these terms in its customer agreements. A large customer discovers the issue during a security review and demands a refund, citing breach of contract and misrepresentation.

Key Legal Risks When Using Open Source in SaaS and Ecommerce

Open source software comes with its own set of legal risks, especially when you incorporate it into products you sell or license to customers. The main risks include:

• License Non-Compliance: Each open source license has its own requirements. Failing to comply can result in loss of license rights or legal claims.
• Copyleft Obligations: Some licenses (like GPL or AGPL) require you to make your own source code available if you distribute or provide access to software based on their code. This can be a surprise for SaaS businesses.
• Attribution Requirements: Many open source licenses require you to credit the original authors in your product documentation or about page.
• Patent or Security Risks: Some open source projects may have unknown patent claims or security vulnerabilities, which could expose your business or customers to risk.
• Customer Claims: If customers are unaware of open source restrictions, they may claim breach of contract or seek refunds if their use is limited.

For example, if your ecommerce platform uses a library under the Affero General Public License (AGPL), you may be required to provide your entire source code to customers who access the software over the internet. Failing to do so could result in legal claims from open source rights holders or customer complaints.

Other legal risks include:

• Third-Party Inquiries: Open source rights holders or advocacy groups may contact your business to enforce license terms.
• Investor Due Diligence: Investors may require proof of open source compliance before funding or acquisition.
• Regulatory Scrutiny: The FTC or state attorneys general may investigate if customers complain about undisclosed restrictions.

To reduce these risks, businesses should:

• Maintain a current inventory of all open source components in their products
• Review and comply with each license's terms
• Disclose relevant open source details to customers before purchase
• Consult with legal counsel if unsure about license obligations

Checklist for Managing Legal Risks:

• Have you identified all open source components in your product?
• Do you know which licenses apply to each component?
• Are you complying with all license requirements (attribution, source code, etc.)?
• Have you disclosed relevant open source details to customers before purchase?
• Is your team trained on open source compliance?
• Do you have a process for responding to customer or third-party inquiries?

Review your open source policy and inventory regularly, especially when updating your product or adding new features.

What to Include in Your Open Source Policy and Customer Notices

Your open source policy should serve both as an internal guide for your team and as a clear external notice for your customers. Here is what to include:

• List of Open Source Components: Identify all open source libraries, frameworks, or tools used in your product. This can be included in your documentation or as an appendix to your terms of service.
• Applicable Licenses: Specify which open source licenses apply to each component (e.g., MIT, Apache 2.0, GPL).
• Customer Rights and Restrictions: Clearly explain any restrictions or obligations that affect the customer, such as requirements to provide attribution or limitations on use.
• Source Code Availability: If a license requires you to provide source code, explain how customers can request or access it.
• Attribution Notices: Include any required copyright or attribution statements in your product, website, or documentation.
• Contact Information: Provide a way for customers to ask questions or request more information about open source components.

For SaaS and ecommerce businesses, practical ways to communicate this information include:

• Adding an "Open Source Notices" section to your website or app
• Including open source disclosures in your terms of service or end user license agreement (EULA)
• Providing a downloadable list of open source components and licenses
• Offering a dedicated email address for open source inquiries

Example: A SaaS company creates a public "Open Source Notices" page listing all third-party components and their licenses, with links to the license texts. They also add a summary in their terms of service and provide a contact email for open source questions. This approach helps customers understand their rights and obligations, and reduces the risk of disputes.

Checklist for Your Open Source Policy:

• Is your open source inventory up to date and reviewed regularly?
• Are all license obligations (attribution, source code, etc.) clearly documented?
• Do your customer agreements and product documentation include required disclosures?
• Is your policy written in plain English and easy to find?
• Do you have a process for updating your policy as your product evolves?

Regularly review and update your policy as your product evolves or as you add new open source components. Train your team on the importance of compliance and customer communication.

State Law Issues and FTC Guidance for Open Source Disclosures

While federal law (mainly enforced by the FTC) sets the baseline for fair and transparent customer disclosures, state laws can add extra requirements, especially for online sales, subscriptions, and automatic renewals.

FTC Guidance: The FTC requires that any material information that could affect a customer's decision to buy must be disclosed clearly and conspicuously. This includes negative option billing (such as auto-renewing subscriptions) and any restrictions or obligations tied to the product, including those from open source licenses. If a customer would want to know about a limitation or requirement before buying, it is likely considered material.

State Laws: Several states, including California, New York, and Vermont, have specific laws about automatic renewal and subscription disclosures. For example, California's automatic renewal law requires businesses to:

• Clearly and conspicuously disclose material terms before purchase
• Obtain affirmative consent to the terms
• Provide an easy way to cancel

If open source restrictions or obligations affect how a customer can use your product, these must be disclosed alongside other material terms. Failing to do so can lead to state attorney general investigations or private lawsuits. Some states also require that disclosures be presented in a specific format or location, such as directly above the purchase button or in a summary box.

Practical Example: A SaaS company offers a subscription service with auto-renewal. The service relies on open source components with copyleft licenses that require source code disclosure. Under California law, the company must clearly disclose these obligations before the customer completes the purchase, not just in a buried legal document. The company adds a summary of open source obligations to its checkout page and sends a follow-up email with detailed information.

Keep in mind that contract terms with enterprise customers may require additional open source disclosures or representations. Always review customer contracts for specific requirements and update your policy as needed.

Checklist for State and FTC Compliance:

• Are your open source disclosures clear and conspicuous?
• Do you obtain affirmative consent to material terms, including open source obligations?
• Is your cancellation process easy to use and explained in plain language?
• Have you reviewed state-specific requirements for your target markets?

Remember, failing to comply with FTC or state disclosure rules can result in fines, legal action, or reputational harm. When in doubt, err on the side of more disclosure and clearer communication.

When to Seek Legal Review of Your Open Source Policy

While many startups handle open source compliance internally, there are situations where legal review is strongly recommended:

• You are using open source components under copyleft licenses (e.g., GPL, AGPL, LGPL)
• Your product is distributed to customers (not just used internally)
• You are raising investment or planning an exit, and investors request open source compliance documentation
• You have received a customer or third-party inquiry about open source usage
• You are unsure about specific license obligations or how to disclose them
• You are expanding into new states or countries with different legal requirements

Legal professionals can help you:

• Audit your open source inventory and license compliance
• Draft or review your open source policy and customer notices
• Respond to customer, investor, or regulator questions about open source
• Mitigate risks before they become legal disputes
• Interpret complex or conflicting license terms

Example: A SaaS company is preparing for acquisition. The buyer's legal team requests detailed documentation of all open source components, licenses, and customer disclosures. The company's open source policy is outdated and missing several recent additions. With attorney help, they update their inventory, revise customer notices, and resolve several compliance gaps before closing the deal.

Even if you are comfortable with the basics, a periodic legal review can help catch issues before they escalate. This is especially important if your product evolves, you add new open source components, or you expand into new markets with different legal requirements.

Checklist: When to Seek Legal Help

• Are you using any open source components with copyleft or restrictive licenses?
• Are you distributing your product or making it available to customers?
• Are you preparing for investment, acquisition, or a major customer deal?
• Have you received any open source-related inquiries or complaints?
• Are you unsure about your compliance with FTC or state disclosure rules?

FAQs

Do I have to tell customers about every open source component I use?

No, not every open source component requires customer disclosure. However, you must disclose any component that imposes obligations or restrictions affecting the customer's use, rights, or experience. For example, if a license requires attribution, source code disclosure, or limits on commercial use, you should inform customers before they buy. For components with permissive licenses (like MIT or Apache 2.0) that do not impact the customer, a general notice may be sufficient. Always err on the side of transparency, especially for enterprise customers.

What happens if I do not comply with open source license terms?

Non-compliance can result in loss of license rights, copyright infringement claims, or customer disputes. In some cases, you may be required to stop using the software, release your own source code, or pay damages. Non-compliance can also impact your reputation and relationships with customers, partners, and investors. If regulators or rights holders get involved, you could face fines or legal action.

How should I communicate open source disclosures to customers?

Best practice is to include open source disclosures in your terms of service, EULA, or a dedicated "Open Source Notices" section on your website or app. Use plain language and make the information easy to find. For enterprise customers, be prepared to provide a detailed list of open source components and licenses on request. For subscription or auto-renewal products, make sure disclosures are clear and conspicuous at the point of sale, not just in legal documents.

Does using open source software affect my product's security or IP?

Open source software can introduce security vulnerabilities or unknown intellectual property risks if not properly vetted. Always review the reputation and maintenance status of open source projects before use, and keep your open source inventory up to date. Some licenses may also impact your ability to claim exclusive IP rights over your product. Consider regular security audits and legal reviews as part of your open source policy.

Can state laws require more than federal rules for open source disclosures?

Yes. While FTC rules set a national baseline, states like California, New York, and Vermont impose additional requirements for subscription products, automatic renewals, and material term disclosures. Some states allow customers to sue for failure to disclose material information. Always review the laws in your key markets and update your open source policy and customer notices as needed.

Key Takeaways

• Open source policies help SaaS and ecommerce businesses manage legal risks and build customer trust.
• Disclose any open source components or license obligations that affect customer rights or usage before purchase.
• Follow FTC guidance and state laws for clear, conspicuous customer notices, especially for auto-renewals or subscription products.
• Keep your open source inventory and policy up to date as your product evolves.
• Seek legal review if you use copyleft licenses, distribute your product, or face customer or investor questions.
• Train your team on open source compliance and customer communication best practices.

If you need help drafting or reviewing your open source policy, or want to make sure your customer disclosures are clear and compliant, contact our team at (888) 449-8437 or team@sprintlaw.com. Where legal services are required, they are delivered by licensed lawyers at trusted US law firms through the Sprintlaw platform.