# What does JSONLint use? JSONLint (jsonlint.com) shows public evidence of 39 tools, according to runsonwhat (last checked 2026-10-31). ## Edge & Hosting | Tool | Category | Evidence | Since | |---|---|---|---| | [Cloudflare](https://www.runsonwhat.com/reverse/cloudflare) | CDN & Edge | DNS records, Email records, Website code | | ## Application | Tool | Category | Evidence | Since | |---|---|---|---| | [React](https://www.runsonwhat.com/reverse/react) | Frontend | Website code | | | [Tailwind CSS](https://www.runsonwhat.com/reverse/tailwind) | Frontend | Website code | | | [Next.js](https://www.runsonwhat.com/reverse/nextjs) | Frontend | Website code | | ## Data & Observability | Tool | Category | Evidence | Since | |---|---|---|---| | [Google Tag Manager](https://www.runsonwhat.com/reverse/gtm) | Analytics | Website code | | | [web-vitals](https://www.runsonwhat.com/reverse/web-vitals) | Monitoring | Website code | | ## Go-to-market | Tool | Category | Evidence | Since | |---|---|---|---| | [Google Ads](https://www.runsonwhat.com/reverse/google-ads) | Ads & Pixels | Website code | | | [LinkedIn Insight Tag](https://www.runsonwhat.com/reverse/linkedin-insight) | Ads & Pixels | Website code | | | [Google Ad Manager](https://www.runsonwhat.com/reverse/google-ad-manager) | Ads & Pixels | Website config, Website code | | | [Microsoft Xandr](https://www.runsonwhat.com/reverse/xandr) | Ads & Pixels | Website config, Website code | | | [Criteo](https://www.runsonwhat.com/reverse/criteo) | Ads & Pixels | Website config | | | [LiveRamp](https://www.runsonwhat.com/reverse/liveramp) | Ads & Pixels | Website code | | | [Magnite](https://www.runsonwhat.com/reverse/magnite) | Ads & Pixels | Website config, Website code | | | [PubMatic](https://www.runsonwhat.com/reverse/pubmatic) | Ads & Pixels | Website config, Website code | | | [Adobe Audience Manager](https://www.runsonwhat.com/reverse/adobe-audience-manager) | Ads & Pixels | Website code | | | [StackAdapt](https://www.runsonwhat.com/reverse/stackadapt) | Ads & Pixels | Website code | | | [OpenX](https://www.runsonwhat.com/reverse/openx) | Ads & Pixels | Website config, Website code | | | [Amazon Publisher Services](https://www.runsonwhat.com/reverse/amazon-publisher-services) | Ads & Pixels | Website config | | | [Media.net](https://www.runsonwhat.com/reverse/media-net) | Ads & Pixels | Website config | | | [Index Exchange](https://www.runsonwhat.com/reverse/index-exchange) | Ads & Pixels | Website config | | | [Sovrn](https://www.runsonwhat.com/reverse/sovrn) | Ads & Pixels | Website config | | | [TripleLift](https://www.runsonwhat.com/reverse/triplelift) | Ads & Pixels | Website config, Website code | | | [Amazon Advertising](https://www.runsonwhat.com/reverse/amazon-advertising) | Ads & Pixels | Website code | | | [Sharethrough](https://www.runsonwhat.com/reverse/sharethrough) | Ads & Pixels | Website config | | | [Teads](https://www.runsonwhat.com/reverse/teads) | Ads & Pixels | Website config | | | [Quantcast](https://www.runsonwhat.com/reverse/quantcast) | Ads & Pixels | Website code | | | [RTB House](https://www.runsonwhat.com/reverse/rtb-house) | Ads & Pixels | Website code | | | [Demandbase](https://www.runsonwhat.com/reverse/demandbase) | Sales & CRM | Website code | | | [Adobe Advertising](https://www.runsonwhat.com/reverse/adobe-advertising) | Ads & Pixels | Website code | | | [MediaMath](https://www.runsonwhat.com/reverse/mediamath) | Ads & Pixels | Website code | | | [Outbrain](https://www.runsonwhat.com/reverse/outbrain) | Ads & Pixels | Website config | | | [33Across](https://www.runsonwhat.com/reverse/33across) | Ads & Pixels | Website code | | | [Nativo](https://www.runsonwhat.com/reverse/nativo) | Ads & Pixels | Website code | | | [Adform](https://www.runsonwhat.com/reverse/adform) | Ads & Pixels | Website code | | | [MGID](https://www.runsonwhat.com/reverse/mgid) | Ads & Pixels | Website code | | | [Smart Ad Server](https://www.runsonwhat.com/reverse/smart-ad-server) | Ads & Pixels | Website code | | ## Company Ops | Tool | Category | Evidence | Since | |---|---|---|---| | [reCAPTCHA](https://www.runsonwhat.com/reverse/recaptcha) | Security & Compliance | Website code | | ## FAQ ### What tools does JSONLint use? As of October 2026, runsonwhat has found 39 tools at JSONLint (jsonlint.com) in public records. Edge & Hosting: Cloudflare. Application: React, Tailwind CSS and Next.js. Data & Observability: Google Tag Manager and web-vitals. Go-to-market: Google Ads, LinkedIn Insight Tag and Google Ad Manager. Company Ops: reCAPTCHA. Last checked October 31, 2026. ### What sales tools does JSONLint use? The sales tools runsonwhat has found at JSONLint are Demandbase (October 2026); no CRM shows up in JSONLint's public records. runsonwhat found Demandbase through Demandbase code on jsonlint.com. Demandbase is used by 9,714 companies runsonwhat tracks. ### What analytics tools does JSONLint use? JSONLint uses Google Tag Manager for analytics, according to runsonwhat (October 2026). runsonwhat found Google Tag Manager through Google Tag Manager code on jsonlint.com. Google Tag Manager is used by 511,274 companies runsonwhat tracks. ### What monitoring tools does JSONLint use? JSONLint uses web-vitals for monitoring, according to runsonwhat (October 2026). runsonwhat found web-vitals through web-vitals code on jsonlint.com. web-vitals is used by 29,497 companies runsonwhat tracks. ### Does JSONLint use Cloudflare? Yes. runsonwhat found Cloudflare at JSONLint through DNS records that point at Cloudflare and email records. Cloudflare is a CDN & Edge tool used by 713,220 companies runsonwhat tracks. ### How does runsonwhat know what JSONLint uses? runsonwhat reads public records only. Of the 39 tools at JSONLint, 22 were found through code on jsonlint.com, 15 through website configuration files and 2 through DNS records. A tool is listed only when a direct record backs it up; DNS is rechecked weekly and jsonlint.com about monthly. --- Source: runsonwhat, https://www.runsonwhat.com/company/jsonlint.com (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.