# What does Jellyfish use? Jellyfish (jellyfish.co) shows public evidence of 78 tools, according to runsonwhat (last checked 2026-10-24). - Industry: Software Engineering - Size: 201–1,000 employees - Based in: Boston, United States - Founded: 2017 - LinkedIn: https://www.linkedin.com/company/jellyfish-co ## Edge & Hosting | Tool | Category | Evidence | Since | |---|---|---|---| | [Cloudflare](https://www.runsonwhat.com/reverse/cloudflare) | CDN & Edge | Website code | | | [Amazon Web Services](https://www.runsonwhat.com/reverse/aws) | Hosting & Cloud | Subprocessor list, Website code | | | [Amazon Route 53](https://www.runsonwhat.com/reverse/route53) | DNS | DNS records | | | [Fastly](https://www.runsonwhat.com/reverse/fastly) | CDN & Edge | Website code | | | [Vercel](https://www.runsonwhat.com/reverse/vercel) | Hosting & Cloud | DNS verification records, Subprocessor list | | | [Microsoft Azure](https://www.runsonwhat.com/reverse/azure) | Hosting & Cloud | Subprocessor list | | | [Pantheon](https://www.runsonwhat.com/reverse/pantheon) | Hosting & Cloud | Website code | | ## Application | Tool | Category | Evidence | Since | |---|---|---|---| | [jQuery](https://www.runsonwhat.com/reverse/jquery) | Frontend | Website code | | | [Google Fonts](https://www.runsonwhat.com/reverse/google-fonts) | Media & UI | Website code | | | [YouTube](https://www.runsonwhat.com/reverse/youtube) | Media & UI | Website code | | | [GSAP](https://www.runsonwhat.com/reverse/gsap) | Media & UI | Website code | | | [Tailwind CSS](https://www.runsonwhat.com/reverse/tailwind) | Frontend | Website code | | | [Anthropic](https://www.runsonwhat.com/reverse/anthropic) | AI | DNS verification records, Subprocessor list | | | [OpenAI](https://www.runsonwhat.com/reverse/openai) | AI | DNS verification records | | | [Lottie](https://www.runsonwhat.com/reverse/lottie) | Media & UI | Website code | | | [Wistia](https://www.runsonwhat.com/reverse/wistia) | Media & UI | Website code | | | [Vidyard](https://www.runsonwhat.com/reverse/vidyard) | Media & UI | Website code | | | [Glean](https://www.runsonwhat.com/reverse/glean) | AI | Subprocessor list | | ## 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 | | | [Sentry](https://www.runsonwhat.com/reverse/sentry) | Monitoring | Website code | | | [Hotjar](https://www.runsonwhat.com/reverse/hotjar) | Analytics | Website code | | | [Datadog](https://www.runsonwhat.com/reverse/datadog) | Monitoring | Subprocessor list | | | [Atlassian Statuspage](https://www.runsonwhat.com/reverse/statuspage) | Monitoring | Custom domain, DNS verification records, Email records, Website code | 2022-05 | | [Segment](https://www.runsonwhat.com/reverse/segment) | Analytics | DNS verification records, Website code | | | [Amplitude](https://www.runsonwhat.com/reverse/amplitude) | Analytics | Subprocessor list | | | [LogRocket](https://www.runsonwhat.com/reverse/logrocket) | Monitoring | Subprocessor list | | | [Pendo](https://www.runsonwhat.com/reverse/pendo) | Analytics | Subprocessor list | | | [Dreamdata](https://www.runsonwhat.com/reverse/dreamdata) | Analytics | Website code | | | [Marketo Measure](https://www.runsonwhat.com/reverse/marketo-measure) | Analytics | Website code | | | [Mida](https://www.runsonwhat.com/reverse/mida) | Flags & Experiments | Website code | | | [HockeyStack](https://www.runsonwhat.com/reverse/hockeystack) | Analytics | Website code | | | [ClickHouse](https://www.runsonwhat.com/reverse/clickhouse) | Data Pipeline | Subprocessor list | | | [Grafana](https://www.runsonwhat.com/reverse/grafana) | Monitoring | Subprocessor list | | | [Databricks](https://www.runsonwhat.com/reverse/databricks) | Data Pipeline | Subprocessor list | | | [dbt Labs](https://www.runsonwhat.com/reverse/dbt) | Data Pipeline | Subprocessor list | | ## Go-to-market | Tool | Category | Evidence | Since | |---|---|---|---| | [WordPress](https://www.runsonwhat.com/reverse/wordpress) | Website & CMS | Website code | | | [Google Ads](https://www.runsonwhat.com/reverse/google-ads) | Ads & Pixels | Website code | | | [Yoast SEO](https://www.runsonwhat.com/reverse/yoast) | Website & CMS | Website code | | | [LinkedIn Insight Tag](https://www.runsonwhat.com/reverse/linkedin-insight) | Ads & Pixels | Website code | | | [Zendesk](https://www.runsonwhat.com/reverse/zendesk) | Support & Docs | Custom domain, Subprocessor list | 2022-09 | | [Salesforce](https://www.runsonwhat.com/reverse/salesforce) | Sales & CRM | Email records, Subprocessor list, Website code | | | [ChatGPT Ads](https://www.runsonwhat.com/reverse/chatgpt-ads) | Ads & Pixels | Website code | | | [Reddit Ads](https://www.runsonwhat.com/reverse/reddit-ads) | Ads & Pixels | Website code | | | [Marketo](https://www.runsonwhat.com/reverse/marketo) | Marketing | Custom domain, Email records, Website code | 2021-02 | | [GitBook](https://www.runsonwhat.com/reverse/gitbook) | Support & Docs | Custom domain | | | [Qualified](https://www.runsonwhat.com/reverse/qualified) | Sales & CRM | Website code | | | [Navattic](https://www.runsonwhat.com/reverse/navattic) | Marketing | Website code | | | [Gainsight](https://www.runsonwhat.com/reverse/gainsight) | Sales & CRM | Subprocessor list | | | [Northpass](https://www.runsonwhat.com/reverse/northpass) | Support & Docs | DNS verification records | | | [Gong](https://www.runsonwhat.com/reverse/gong) | Sales & CRM | Subprocessor list | | ## Company Ops | Tool | Category | Evidence | Since | |---|---|---|---| | [Microsoft 365](https://www.runsonwhat.com/reverse/microsoft-365) | Workspace | DNS verification records | | | [Google Workspace](https://www.runsonwhat.com/reverse/google-workspace) | Workspace | Email records, Website code | | | [reCAPTCHA](https://www.runsonwhat.com/reverse/recaptcha) | Security & Compliance | Website code | | | [SendGrid](https://www.runsonwhat.com/reverse/sendgrid) | Email Delivery | Email records | | | [Apple Business](https://www.runsonwhat.com/reverse/apple) | Workspace | DNS verification records | | | [Atlassian](https://www.runsonwhat.com/reverse/atlassian) | Dev Tools | DNS verification records, Subprocessor list | | | [Amazon SES](https://www.runsonwhat.com/reverse/ses) | Email Delivery | Email records, Website code | | | [Mailchimp Transactional](https://www.runsonwhat.com/reverse/mandrill) | Email Delivery | Email records | | | [Let's Encrypt](https://www.runsonwhat.com/reverse/letsencrypt) | Security & Compliance | DNS records | | | [DigiCert](https://www.runsonwhat.com/reverse/digicert) | Security & Compliance | DNS records | | | [Google Trust Services](https://www.runsonwhat.com/reverse/google-trust) | Security & Compliance | DNS records | | | [OneTrust](https://www.runsonwhat.com/reverse/onetrust) | Security & Compliance | DNS verification records, Website code | | | [KnowBe4](https://www.runsonwhat.com/reverse/knowbe4) | Security & Compliance | Email records | | | [Adobe](https://www.runsonwhat.com/reverse/adobe) | Collaboration | DNS verification records | | | [Postmark](https://www.runsonwhat.com/reverse/postmark) | Email Delivery | Email records | | | [Amazon Trust Services](https://www.runsonwhat.com/reverse/amazon-trust) | Security & Compliance | DNS records | | | [Miro](https://www.runsonwhat.com/reverse/miro) | Collaboration | DNS verification records | | | [Slack](https://www.runsonwhat.com/reverse/slack) | Collaboration | Subprocessor list | | | [Have I Been Pwned](https://www.runsonwhat.com/reverse/hibp) | Security & Compliance | DNS verification records | | | [hCaptcha](https://www.runsonwhat.com/reverse/hcaptcha) | Security & Compliance | Website code | | | [Cursor](https://www.runsonwhat.com/reverse/cursor) | Dev Tools | DNS verification records | | | [Docker](https://www.runsonwhat.com/reverse/docker) | Dev Tools | DNS verification records | | | [Uber for Business](https://www.runsonwhat.com/reverse/uber) | Finance & Legal | DNS verification records | | | [SafeBase](https://www.runsonwhat.com/reverse/safebase) | Security & Compliance | Custom domain | 2024-07 | | [Linear](https://www.runsonwhat.com/reverse/linear) | Dev Tools | DNS verification records, Subprocessor list | | | [GitHub](https://www.runsonwhat.com/reverse/github) | Dev Tools | Subprocessor list | | ## Recent changes at Jellyfish - 2026-10-06: started using [GitBook](https://www.runsonwhat.com/reverse/gitbook) ## FAQ ### What tools does Jellyfish use? As of October 2026, runsonwhat has found 78 tools at Jellyfish (jellyfish.co) in public records. Edge & Hosting: Cloudflare, Amazon Web Services and Amazon Route 53. Application: jQuery, Google Fonts and YouTube. Data & Observability: Google Analytics, Google Tag Manager and Sentry. Go-to-market: WordPress, Google Ads and Yoast SEO. Company Ops: Microsoft 365, Google Workspace and reCAPTCHA. Last checked October 24, 2026. ### What cloud does Jellyfish run on? Jellyfish uses Amazon Web Services for hosting and cloud infrastructure, alongside Vercel, Microsoft Azure and Pantheon, according to runsonwhat (October 2026). runsonwhat found Amazon Web Services through Amazon Web Services on jellyfish.co's subprocessor list and code on jellyfish.co. Amazon Web Services is used by 145,790 companies runsonwhat tracks. ### What CRM does Jellyfish use? Jellyfish uses Salesforce for its CRM, alongside Qualified, Gainsight and Gong, according to runsonwhat (October 2026). runsonwhat found Salesforce through email records that authorize Salesforce and its subprocessor list. Salesforce is used by 34,165 companies runsonwhat tracks. ### What email provider does Jellyfish use? Jellyfish uses Microsoft 365 for email and office software, alongside Google Workspace and Apple Business, according to runsonwhat (October 2026). runsonwhat found Microsoft 365 through a DNS verification record for Microsoft 365. Microsoft 365 is used by 712,532 companies runsonwhat tracks. ### What does Jellyfish use for customer support? Jellyfish uses Zendesk for customer support and documentation, alongside GitBook and Northpass, according to runsonwhat (October 2026). runsonwhat found Zendesk through a subdomain that points at Zendesk and its subprocessor list, and Jellyfish has used it since at least September 2022. Zendesk is used by 42,020 companies runsonwhat tracks. ### What analytics tools does Jellyfish use? Jellyfish uses Google Analytics for analytics, alongside Google Tag Manager, Hotjar and Segment, according to runsonwhat (October 2026). runsonwhat found Google Analytics through Google Analytics code on jellyfish.co. Google Analytics is used by 883,888 companies runsonwhat tracks. ### How long has Jellyfish used Marketo? Jellyfish has used Marketo since at least February 2021, going by the first public certificate of the jellyfish.co subdomain that points at Marketo. Other long-running tools at Jellyfish include Atlassian Statuspage (since May 2022), Zendesk (since September 2022) and SafeBase (since July 2024). ### Does Jellyfish use jQuery? Yes. runsonwhat found jQuery at Jellyfish through jQuery code on jellyfish.co. jQuery is a Frontend tool used by 918,085 companies runsonwhat tracks. ### Does Jellyfish use AI tools? Yes. runsonwhat has found Anthropic, OpenAI and Glean at Jellyfish; Anthropic, for example, through a DNS verification record for Anthropic and its subprocessor list. AI services called only from servers leave no public trace, so Jellyfish may use more AI tools than these. ### Has Jellyfish changed tools recently? Yes. On runsonwhat's rechecks, Jellyfish started using GitBook (latest on October 6, 2026). A change counts only between two checks of jellyfish.co done the same way. ### Which companies have a tech stack similar to Jellyfish's? The companies with the stacks most like Jellyfish's are Hightouch, Knak, Zigzag Global and Metaplane, according to runsonwhat (October 2026). Each shares 20 to 36 tools with Jellyfish, and rare tools count for more than common ones like Google Workspace, so the match reflects real stack choices. ### How does runsonwhat know what Jellyfish uses? runsonwhat reads public records only. Of the 78 tools at Jellyfish, 29 were found through code on jellyfish.co, 22 through DNS records, 15 through its own subprocessor list, 7 through email records and 5 through subdomains that point at the vendor. A tool is listed only when a direct record backs it up; DNS is rechecked weekly and jellyfish.co about monthly. --- Source: runsonwhat, https://www.runsonwhat.com/company/jellyfish.co (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.