# Palo Alto Networks Cortex Xpanse vs S3BucketList: side-by-side comparison (2026) [Palo Alto Networks Cortex Xpanse](https://cybersectools.com/tools/palo-alto-networks-cortex-xpanse) is a commercial [external attack surface management](https://cybersectools.com/categories/external-asm) solution by [Palo Alto Networks](https://cybersectools.com/companies/palo-alto-networks). [S3BucketList](https://cybersectools.com/tools/s3bucketlist) is a free [external attack surface management](https://cybersectools.com/categories/external-asm) solution. Features, integrations, deployment and the company behind each one, side by side. ## Our take What our shortlists say about the one we picked. ### [Palo Alto Networks Cortex Xpanse](https://cybersectools.com/tools/palo-alto-networks-cortex-xpanse) Best for: Large companies wanting automated fixes for exposures It earns a place because it goes past listing exposures, since automated playbooks close them without a ticket, which suits a large company with a sprawling footprint. It fits mid-market and enterprise teams. Agree up front which fixes the playbooks may run on their own, because automatic changes to live assets need an owner. From [Best Attack Surface Management Solutions for Business](https://cybersectools.com/shortlists/best-attack-surface-solutions), Fall 2026. Reviewed by [Nika (Nikoloz) Kokhreidze](https://cybersectools.com/about). Need the answer fast? [Best Attack Surface Management Solutions for Business](https://cybersectools.com/shortlists/best-attack-surface-solutions) picks Palo Alto Networks Cortex Xpanse, Microsoft Defender EASM, Mandiant Attack Surface Management and 4 more. ## Side-by-side comparison | | Palo Alto Networks Cortex Xpanse | S3BucketList | |---|---|---| | Pricing model | Commercial | Free | | Category | External Attack Surface Management | External Attack Surface Management | | Verified | No | No | | Deployment type | Cloud | Cloud | | Company size fit | Mid-Market, Enterprise | Startup, SMB, Mid-Market, Enterprise | | GitHub stars | – | 124 | | Last commit | – | Aug 2025 | | Company | Palo Alto Networks | – | | Headquarters | – | – | ### Use cases and capabilities | | Palo Alto Networks Cortex Xpanse | S3BucketList | |---|---|---| | Reconnaissance | Yes | Yes | | Enumeration | – | Yes | | Browser Security | – | Yes | | S3 | – | Yes | | AWS | – | Yes | ### Core features **Palo Alto Networks Cortex Xpanse** 10 features listed. Sign in on the page to see them. **S3BucketList** No features listed. ### Integrations **Palo Alto Networks Cortex Xpanse** 12 integrations listed. Sign in on the page to see them. **S3BucketList** No integrations listed. ## Which one fits you Based on what each listing shows: deployment, company size, price and open source. - [S3BucketList](https://cybersectools.com/tools/s3bucketlist) fits if you are a startup or a small business, you need a free product and you want an open-source product. ## Palo Alto Networks Cortex Xpanse vs S3BucketList FAQ Common questions when comparing Palo Alto Networks Cortex Xpanse vs S3BucketList for external attack surface management. ### What is the difference between Palo Alto Networks Cortex Xpanse and S3BucketList? **Palo Alto Networks Cortex Xpanse**: Active attack surface mgmt solution for discovering & remediating unknown risks. Built by Palo Alto Networks. **S3BucketList**: A Chrome extension that automatically detects and lists Amazon S3 buckets while browsing websites. The table above shows where their features, integrations, deployment and company size fit differ. ### Who makes Palo Alto Networks Cortex Xpanse and S3BucketList? **Palo Alto Networks Cortex Xpanse** is made by Palo Alto Networks. **S3BucketList** is open-source with 124 GitHub stars. The vendor behind a product decides its roadmap, support, and longevity, so check each company's profile before you commit. ### Is Palo Alto Networks Cortex Xpanse a good alternative to S3BucketList? Often, yes. Palo Alto Networks Cortex Xpanse and S3BucketList are both External Attack Surface Management products, and both cover Reconnaissance. Key differences: Palo Alto Networks Cortex Xpanse is Commercial while S3BucketList is Free, S3BucketList is open-source. Use the table above to see where features, deployment and company size fit differ. ## Related comparisons - [Palo Alto Networks Cortex Xpanse vs DDactic Attack Surface Discovery](https://cybersectools.com/compare/ddactic-attack-surface-discovery-vs-palo-alto-networks-cortex-xpanse) - [Palo Alto Networks Cortex Xpanse vs Censys Attack Surface Management](https://cybersectools.com/compare/censys-attack-surface-management-vs-palo-alto-networks-cortex-xpanse) - [Palo Alto Networks Cortex Xpanse vs Intruder Attack Surface Management](https://cybersectools.com/compare/intruder-attack-surface-management-vs-palo-alto-networks-cortex-xpanse) - [S3BucketList vs DDactic Attack Surface Discovery](https://cybersectools.com/compare/ddactic-attack-surface-discovery-vs-s3bucketlist) - [S3BucketList vs Censys Attack Surface Management](https://cybersectools.com/compare/censys-attack-surface-management-vs-s3bucketlist) - [S3BucketList vs Intruder Attack Surface Management](https://cybersectools.com/compare/intruder-attack-surface-management-vs-s3bucketlist) ## Alternatives to each - [See all Palo Alto Networks Cortex Xpanse alternatives](https://cybersectools.com/alternatives/palo-alto-networks-cortex-xpanse) - [See all S3BucketList alternatives](https://cybersectools.com/alternatives/s3bucketlist) --- Source: https://cybersectools.com/compare/palo-alto-networks-cortex-xpanse-vs-s3bucketlist For AI agents: each product above has its own Markdown page (add .md to its URL, for example https://cybersectools.com/tools/palo-alto-networks-cortex-xpanse.md). Every CybersecTools shortlist is listed at https://cybersectools.com/shortlists.md. More on Palo Alto Networks Cortex Xpanse and S3BucketList: funding, momentum, hiring and news, plus the full product and company record, are available through the Mandos MCP Server (paid plans), which connects to AI assistants: https://mandos.io/mcp?utm_source=cybersectools.com&utm_medium=compare-md