# What does Langflow use?

Langflow (langflow.org) shows public evidence of 20 tools, according to runsonwhat (last checked 2026-11-02).

- Founded: 2023
- LinkedIn: https://www.linkedin.com/company/langflow

## Edge & Hosting

| Tool | Category | Evidence | Since |
|---|---|---|---|
| [Fastly](https://www.runsonwhat.com/reverse/fastly) | CDN & Edge | Website code |  |
| [Vercel](https://www.runsonwhat.com/reverse/vercel) | Hosting & Cloud | Custom domain |  |
| [NS1](https://www.runsonwhat.com/reverse/ns1) | DNS | DNS records |  |
| [GitHub Pages](https://www.runsonwhat.com/reverse/github-pages) | Hosting & Cloud | Custom domain, DNS records, Website code |  |

## Application

| Tool | Category | Evidence | Since |
|---|---|---|---|
| [Google Fonts](https://www.runsonwhat.com/reverse/google-fonts) | Media & UI | Website code |  |
| [Adobe Fonts](https://www.runsonwhat.com/reverse/adobe-fonts) | Media & UI | Website code |  |
| [Next.js](https://www.runsonwhat.com/reverse/nextjs) | Frontend | Website code |  |
| [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 |  |
| [Sentry](https://www.runsonwhat.com/reverse/sentry) | Monitoring | Website code |  |

## Go-to-market

| Tool | Category | Evidence | Since |
|---|---|---|---|
| [Google Ads](https://www.runsonwhat.com/reverse/google-ads) | Ads & Pixels | Website code |  |
| [Marketo](https://www.runsonwhat.com/reverse/marketo) | Marketing | Website code |  |
| [Discord](https://www.runsonwhat.com/reverse/discord) | Support & Docs | Website code |  |

## Company Ops

| Tool | Category | Evidence | Since |
|---|---|---|---|
| [Google Workspace](https://www.runsonwhat.com/reverse/google-workspace) | Workspace | Email records |  |
| [SendGrid](https://www.runsonwhat.com/reverse/sendgrid) | Email Delivery | Email records |  |
| [Let's Encrypt](https://www.runsonwhat.com/reverse/letsencrypt) | Security & Compliance | DNS records |  |
| [Sectigo](https://www.runsonwhat.com/reverse/sectigo) | Security & Compliance | DNS records |  |
| [Google Trust Services](https://www.runsonwhat.com/reverse/google-trust) | Security & Compliance | DNS records |  |

## Recent changes at Langflow

- 2026-11-02: stopped using [Proofpoint](https://www.runsonwhat.com/reverse/proofpoint)

## FAQ

### What tools does Langflow use?

As of November 2026, runsonwhat has found 20 tools at Langflow (langflow.org) in public records. Edge & Hosting: Fastly, Vercel and NS1. Application: Google Fonts, Adobe Fonts and Next.js. Data & Observability: Google Analytics and Sentry. Go-to-market: Google Ads, Marketo and Discord. Company Ops: Google Workspace, SendGrid and Let's Encrypt. Last checked November 2, 2026.

### What cloud does Langflow run on?

Langflow uses Vercel for hosting and cloud infrastructure, alongside GitHub Pages, according to runsonwhat (November 2026). runsonwhat found Vercel through a subdomain that points at Vercel. Vercel is used by 51,442 companies runsonwhat tracks.

### What email provider does Langflow use?

Langflow uses Google Workspace for email and office software, according to runsonwhat (November 2026). runsonwhat found Google Workspace through email records that authorize Google Workspace. Google Workspace is used by 412,572 companies runsonwhat tracks.

### What does Langflow use for customer support?

Langflow uses Discord for customer support and documentation, according to runsonwhat (November 2026). runsonwhat found Discord through Discord code on langflow.org. Discord is used by 7,015 companies runsonwhat tracks.

### What analytics tools does Langflow use?

Langflow uses Google Analytics for analytics, according to runsonwhat (November 2026). runsonwhat found Google Analytics through Google Analytics code on langflow.org. Google Analytics is used by 906,041 companies runsonwhat tracks.

### What marketing software does Langflow use?

Langflow uses Marketo for marketing, according to runsonwhat (November 2026). runsonwhat found Marketo through Marketo code on langflow.org. Marketo is used by 9,048 companies runsonwhat tracks.

### Does Langflow use Google Fonts?

Yes. runsonwhat found Google Fonts at Langflow through Google Fonts code on langflow.org. Google Fonts is a Media & UI tool used by 825,833 companies runsonwhat tracks.

### Does Langflow use AI tools?

Yes. runsonwhat has found OpenAI at Langflow; OpenAI, for example, through a DNS verification record for OpenAI. AI services called only from servers leave no public trace, so Langflow may use more AI tools than these.

### Has Langflow changed tools recently?

Yes. On runsonwhat's rechecks, Langflow stopped using Proofpoint (latest on November 2, 2026). A change counts only between two checks of langflow.org done the same way.

### How does runsonwhat know what Langflow uses?

runsonwhat reads public records only. Of the 20 tools at Langflow, 9 were found through code on langflow.org, 6 through DNS records, 2 through email records, 2 through subdomains that point at the vendor and 1 through website configuration files. A tool is listed only when a direct record backs it up; DNS is rechecked weekly and langflow.org about monthly.


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Source: runsonwhat, https://www.runsonwhat.com/company/langflow.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.