# What does The Union of Concerned Scientists use? The Union of Concerned Scientists (ucs.org) shows public evidence of 22 tools, according to runsonwhat (last checked 2026-11-08). ## Edge & Hosting | Tool | Category | Evidence | Since | |---|---|---|---| | [Cloudflare](https://www.runsonwhat.com/reverse/cloudflare) | CDN & Edge | DNS records, Email records, Website code | | | [Platform.sh](https://www.runsonwhat.com/reverse/platformsh) | Hosting & Cloud | Website code | | ## Application | Tool | Category | Evidence | Since | |---|---|---|---| | [jQuery](https://www.runsonwhat.com/reverse/jquery) | Frontend | Website code | | | [Anthropic](https://www.runsonwhat.com/reverse/anthropic) | AI | DNS verification records | | | [OpenAI](https://www.runsonwhat.com/reverse/openai) | AI | DNS verification records | | ## Data & Observability | Tool | Category | Evidence | Since | |---|---|---|---| | [Google Analytics](https://www.runsonwhat.com/reverse/ga) | Analytics | Website code | | | [Google Tag Manager](https://www.runsonwhat.com/reverse/gtm) | Analytics | Website code | | | [Optimizely](https://www.runsonwhat.com/reverse/optimizely) | Flags & Experiments | Website code | | ## Go-to-market | Tool | Category | Evidence | Since | |---|---|---|---| | [Google Ads](https://www.runsonwhat.com/reverse/google-ads) | Ads & Pixels | Website code | | | [Meta Pixel](https://www.runsonwhat.com/reverse/meta-pixel) | Ads & Pixels | DNS verification records, Website code | | | [Microsoft Ads](https://www.runsonwhat.com/reverse/bing-ads) | Ads & Pixels | Website code | | | [Constant Contact](https://www.runsonwhat.com/reverse/constantcontact) | Marketing | Email records | | | [Quantcast](https://www.runsonwhat.com/reverse/quantcast) | Ads & Pixels | Website code | | ## Company Ops | Tool | Category | Evidence | Since | |---|---|---|---| | [Microsoft 365](https://www.runsonwhat.com/reverse/microsoft-365) | Workspace | Email records, DNS verification records, Website code | | | [Google Workspace](https://www.runsonwhat.com/reverse/google-workspace) | Workspace | DNS verification records | | | [SendGrid](https://www.runsonwhat.com/reverse/sendgrid) | Email Delivery | Email records | | | [Amazon SES](https://www.runsonwhat.com/reverse/ses) | Email Delivery | DNS verification records | | | [Mailgun](https://www.runsonwhat.com/reverse/mailgun) | Email Delivery | Email records, Website code | | | [Red Sift OnDMARC](https://www.runsonwhat.com/reverse/redsift) | Security & Compliance | Email records | | | [Box](https://www.runsonwhat.com/reverse/box) | Collaboration | DNS verification records | | | [TeamViewer](https://www.runsonwhat.com/reverse/teamviewer) | Dev Tools | DNS verification records | | ## FAQ ### What tools does The Union of Concerned Scientists use? As of November 2026, runsonwhat has found 22 tools at The Union of Concerned Scientists (ucs.org) in public records. Edge & Hosting: Cloudflare and Platform.sh. Application: jQuery, Anthropic and OpenAI. Data & Observability: Google Analytics, Google Tag Manager and Optimizely. Go-to-market: Google Ads, Meta Pixel and Microsoft Ads. Company Ops: Microsoft 365, Google Workspace and SendGrid. Last checked November 8, 2026. ### What cloud does The Union of Concerned Scientists run on? The Union of Concerned Scientists uses Platform.sh for hosting and cloud infrastructure, according to runsonwhat (November 2026). runsonwhat found Platform.sh through Platform.sh code on ucs.org. Platform.sh is used by 2,095 companies runsonwhat tracks. ### What email provider does The Union of Concerned Scientists use? The Union of Concerned Scientists uses Microsoft 365 for email and office software, alongside Google Workspace, according to runsonwhat (November 2026). runsonwhat found Microsoft 365 through email records that authorize Microsoft 365 and a DNS verification record. Microsoft 365 is used by 730,614 companies runsonwhat tracks. ### What analytics tools does The Union of Concerned Scientists use? The Union of Concerned Scientists uses Google Analytics for analytics, alongside Google Tag Manager, according to runsonwhat (November 2026). runsonwhat found Google Analytics through Google Analytics code on ucs.org. Google Analytics is used by 903,787 companies runsonwhat tracks. ### What marketing software does The Union of Concerned Scientists use? The Union of Concerned Scientists uses Constant Contact for marketing, according to runsonwhat (November 2026). runsonwhat found Constant Contact through email records that authorize Constant Contact. Constant Contact is used by 13,761 companies runsonwhat tracks. ### Does The Union of Concerned Scientists use jQuery? Yes. runsonwhat found jQuery at The Union of Concerned Scientists through jQuery code on ucs.org. jQuery is a Frontend tool used by 927,163 companies runsonwhat tracks. ### Does The Union of Concerned Scientists use AI tools? Yes. runsonwhat has found Anthropic and OpenAI at The Union of Concerned Scientists; Anthropic, for example, through a DNS verification record for Anthropic. AI services called only from servers leave no public trace, so The Union of Concerned Scientists may use more AI tools than these. ### Which companies have a tech stack similar to The Union of Concerned Scientists's? The companies with the stacks most like The Union of Concerned Scientists' are Geiger Gruppe, Manufacturers Alliance, Wittkieffer and Freesat, according to runsonwhat (November 2026). Each shares 5 to 10 tools with The Union of Concerned Scientists, and rare tools count for more than common ones like Google Workspace, so the match reflects real stack choices. ### How does runsonwhat know what The Union of Concerned Scientists uses? runsonwhat reads public records only. Of the 22 tools at The Union of Concerned Scientists, 9 were found through DNS records, 8 through code on ucs.org and 5 through email records. A tool is listed only when a direct record backs it up; DNS is rechecked weekly and ucs.org about monthly. --- Source: runsonwhat, https://www.runsonwhat.com/company/ucs.org (updated November 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.