# What does American Civil Liberties Union use? American Civil Liberties Union (aclu.org) shows public evidence of 28 tools, according to runsonwhat (last checked 2026-10-20). - Industry: Unspecified - Size: 201–1,000 employees - Based in: New York City, United States ## Edge & Hosting | Tool | Category | Evidence | Since | |---|---|---|---| | [Cloudflare](https://www.runsonwhat.com/reverse/cloudflare) | CDN & Edge | DNS records, Email records, Website code | | | [Amazon Web Services](https://www.runsonwhat.com/reverse/aws) | Hosting & Cloud | Website code | | | [Fastly](https://www.runsonwhat.com/reverse/fastly) | CDN & Edge | Custom domain, DNS records, Website code | 2019-07 | | [Pantheon](https://www.runsonwhat.com/reverse/pantheon) | Hosting & Cloud | Website code | | ## Application | Tool | Category | Evidence | Since | |---|---|---|---| | [Tailwind CSS](https://www.runsonwhat.com/reverse/tailwind) | Frontend | Website code | | | [Vue.js](https://www.runsonwhat.com/reverse/vue) | Frontend | Website code | | | [PayPal](https://www.runsonwhat.com/reverse/paypal) | Payments & Billing | Website code | | | [Braintree](https://www.runsonwhat.com/reverse/braintree) | Payments & Billing | Website code | | ## Data & Observability | Tool | Category | Evidence | Since | |---|---|---|---| | [Optimizely](https://www.runsonwhat.com/reverse/optimizely) | Flags & Experiments | Website code | | | [Heap](https://www.runsonwhat.com/reverse/heap) | Analytics | Website code | | ## Go-to-market | Tool | Category | Evidence | Since | |---|---|---|---| | [WordPress](https://www.runsonwhat.com/reverse/wordpress) | Website & CMS | Website code | | | [Meta Pixel](https://www.runsonwhat.com/reverse/meta-pixel) | Ads & Pixels | DNS verification records | | | [Yoast SEO](https://www.runsonwhat.com/reverse/yoast) | Website & CMS | Website code | | | [Zendesk](https://www.runsonwhat.com/reverse/zendesk) | Support & Docs | Email records | | | [BigCommerce](https://www.runsonwhat.com/reverse/bigcommerce) | Website & CMS | Custom domain | 2017-07 | | [Sailthru](https://www.runsonwhat.com/reverse/sailthru) | Marketing | Custom domain, Website code | 2019-10 | ## Company Ops | Tool | Category | Evidence | Since | |---|---|---|---| | [Microsoft 365](https://www.runsonwhat.com/reverse/microsoft-365) | Workspace | Email records, DNS verification records | | | [SendGrid](https://www.runsonwhat.com/reverse/sendgrid) | Email Delivery | Custom domain, Email records | | | [Apple Business](https://www.runsonwhat.com/reverse/apple) | Workspace | DNS verification records | | | [Mailchimp Transactional](https://www.runsonwhat.com/reverse/mandrill) | Email Delivery | Email records | | | [GlobalSign](https://www.runsonwhat.com/reverse/globalsign) | Security & Compliance | DNS verification records | | | [Proofpoint](https://www.runsonwhat.com/reverse/proofpoint) | Security & Compliance | Email records | | | [Mailgun](https://www.runsonwhat.com/reverse/mailgun) | Email Delivery | Email records | | | [Adobe](https://www.runsonwhat.com/reverse/adobe) | Collaboration | DNS verification records | | | [DocuSign](https://www.runsonwhat.com/reverse/docusign) | Finance & Legal | DNS verification records, Website code | | | [Zoom](https://www.runsonwhat.com/reverse/zoom) | Collaboration | DNS verification records | | | [Smartsheet](https://www.runsonwhat.com/reverse/smartsheet) | Collaboration | DNS verification records | | ## FAQ ### What tools does American Civil Liberties Union use? As of October 2026, runsonwhat has found 28 tools at American Civil Liberties Union (aclu.org) in public records. Edge & Hosting: Cloudflare, Amazon Web Services and Fastly. Application: Tailwind CSS, Vue.js and PayPal. Data & Observability: Optimizely and Heap. Go-to-market: WordPress, Meta Pixel and Yoast SEO. Company Ops: Microsoft 365, SendGrid and Apple Business. Last checked October 20, 2026. ### What cloud does American Civil Liberties Union run on? American Civil Liberties Union uses Amazon Web Services for hosting and cloud infrastructure, alongside Pantheon, according to runsonwhat (October 2026). runsonwhat found Amazon Web Services through Amazon Web Services code on aclu.org. Amazon Web Services is used by 145,595 companies runsonwhat tracks. ### What email provider does American Civil Liberties Union use? American Civil Liberties Union uses Microsoft 365 for email and office software, alongside Apple Business, according to runsonwhat (October 2026). runsonwhat found Microsoft 365 through email records that authorize Microsoft 365 and a DNS verification record. Microsoft 365 is used by 710,115 companies runsonwhat tracks. ### What does American Civil Liberties Union use for customer support? American Civil Liberties Union uses Zendesk for customer support and documentation, according to runsonwhat (October 2026). runsonwhat found Zendesk through email records that authorize Zendesk. Zendesk is used by 41,722 companies runsonwhat tracks. ### What payment provider does American Civil Liberties Union use? American Civil Liberties Union uses PayPal for payments and billing, alongside Braintree, according to runsonwhat (October 2026). runsonwhat found PayPal through PayPal code on aclu.org. PayPal is used by 34,313 companies runsonwhat tracks. ### What analytics tools does American Civil Liberties Union use? American Civil Liberties Union uses Heap for analytics, according to runsonwhat (October 2026). runsonwhat found Heap through Heap code on aclu.org. Heap is used by 1,676 companies runsonwhat tracks. ### How long has American Civil Liberties Union used BigCommerce? American Civil Liberties Union has used BigCommerce since at least July 2017, going by the first public certificate of the aclu.org subdomain that points at BigCommerce. Other long-running tools at American Civil Liberties Union include Fastly (since July 2019) and Sailthru (since October 2019). ### Does American Civil Liberties Union use Cloudflare? Yes. runsonwhat found Cloudflare at American Civil Liberties Union through DNS records that point at Cloudflare and email records. Cloudflare is a CDN & Edge tool used by 702,338 companies runsonwhat tracks. ### Which companies have a tech stack similar to American Civil Liberties Union's? The companies with the stacks most like American Civil Liberties Union's are ANINE BING, ACLU of Northern California, Rent the Runway and Morning Brew, according to runsonwhat (October 2026). Each shares 9 to 14 tools with American Civil Liberties Union, and rare tools count for more than common ones like Google Workspace, so the match reflects real stack choices. ### How does runsonwhat know what American Civil Liberties Union uses? runsonwhat reads public records only. Of the 28 tools at American Civil Liberties Union, 10 were found through code on aclu.org, 9 through DNS records, 5 through email records and 4 through subdomains that point at the vendor. A tool is listed only when a direct record backs it up; DNS is rechecked weekly and aclu.org about monthly. --- Source: runsonwhat, https://www.runsonwhat.com/company/aclu.org (updated October 2026). Counts are companies with direct public evidence of the tool (DNS records, certificates, website code, a real-browser crawl, subprocessor lists), so they are lower bounds. Methodology: https://www.runsonwhat.com/methodology.