# Who uses Kernel? 14 companies use Kernel on usedby: 5 confirmed, 9 observed and 0 signals. Customers include Felicity, Flint and Rye. Latest check 2026-10-25: 14 of 14 companies checked, from 8 public sources. > Give your AI agents the internet with cloud browsers - Category: [Agent frameworks & AI gateways](https://www.usedby.ai/tools/category/llm-ops-frameworks.md) - Website: [kernel.sh](https://www.kernel.sh) ## Customers Every line is a customer, at one of three proof levels: confirmed (a case study, a named quote, a press release, or the company's own public account of using the tool (its own site, or a post by one of its executives, VP or above)), observed (the vendor shows the company on its own pages) or signal (a job post shows the company's employees use the tool, the weakest proof). A line the company declared to usedby itself is marked declared. The first public proof is the first public page we found, not an adoption date. | Company | Industry | Proof | First public proof | Source | |---|---|---|---|---| | [Felicity](https://www.usedby.ai/companies/felicity.md) | — | Confirmed | — | [kernel.sh](https://www.kernel.sh/customers/felicity), captured 2026-10-25 | | [Flint](https://www.usedby.ai/companies/flint.md) | — | Confirmed | — | [kernel.sh](https://www.kernel.sh/customers/flint), captured 2026-10-25 | | [Rye](https://www.usedby.ai/companies/rye.md) | — | Confirmed | — | [kernel.sh](https://www.kernel.sh/customers/rye), captured 2026-10-25 | | [Stably](https://www.usedby.ai/companies/stably.md) | — | Confirmed | — | [kernel.sh](https://www.kernel.sh/customers/stably), captured 2026-10-25 | | [The Prompting Company](https://www.usedby.ai/companies/the-prompting-company.md) | — | Confirmed | — | [kernel.sh](https://www.kernel.sh/customers/thepromptingcompany), captured 2026-10-25 | | [Y Combinator](https://www.usedby.ai/companies/y-combinator.md) | Investment & VC | Observed | — | [kernel.sh](https://www.kernel.sh/pricing), captured 2026-10-25 | | [Vercel](https://www.usedby.ai/companies/vercel.md) | DevTools & Infrastructure | Observed | — | [kernel.sh](https://www.kernel.sh/pricing), captured 2026-10-25 | | [Emergent](https://www.usedby.ai/companies/emergent.md) | Biotech & Pharma | Observed | — | [kernel.sh](https://www.kernel.sh/pricing), captured 2026-10-25 | | [Framer](https://www.usedby.ai/companies/framer.md) | DevTools & Infrastructure | Observed | — | [kernel.sh](https://www.kernel.sh/pricing), captured 2026-10-25 | | [Cash App](https://www.usedby.ai/companies/cash-app.md) | Fintech & Payments | Observed | — | [kernel.sh](https://www.kernel.sh/pricing), captured 2026-10-25 | | [Claim Health](https://www.usedby.ai/companies/claim-health.md) | — | Observed | — | [kernel.sh](https://www.kernel.sh/customers), captured 2026-10-25 | | [Coframe](https://www.usedby.ai/companies/coframe.md) | Marketing Tech | Observed | — | [kernel.sh](https://www.kernel.sh/customers), captured 2026-10-25 | | [Novoflow](https://www.usedby.ai/companies/novoflow.md) | — | Observed | — | [kernel.sh](https://www.kernel.sh/pricing), captured 2026-10-25 | | [Woflow](https://www.usedby.ai/companies/woflow.md) | — | Observed | — | [kernel.sh](https://www.kernel.sh/pricing), captured 2026-10-25 | ## Published results Reviewed stories only. A figure is the vendor’s or the customer’s claim, quoted with its label; usedby did not measure it. - [Stably](https://www.usedby.ai/case-studies/stably-kernel.md): **333x** faster browser cold starts (Vendor case study, published 2026-05-26) - [Flint](https://www.usedby.ai/case-studies/flint-kernel.md): **5x** fewer bot detection errors (Vendor case study, published 2026-03-30) - [Felicity](https://www.usedby.ai/case-studies/felicity-kernel.md): **2x** faster end-to-end automations (Vendor case study, published 2026-01-13) - [The Prompting Company](https://www.usedby.ai/case-studies/the-prompting-company-kernel.md): **50,000+** browsers spun up per month (Vendor case study, published 2026-02-09) ## Before you buy usedby has not verified Kernel’s pricing, security or data terms yet. ## Alternatives Tools of the same or a competing category, from another vendor, ranked by public customers (every proof level, job posts included). - [Braintrust](https://www.usedby.ai/tools/braintrust.md): 44 public customers, 1 shared with Kernel. Compare: https://www.usedby.ai/compare/braintrust-vs-kernel.md - [LangSmith](https://www.usedby.ai/tools/langsmith.md): 43 public customers, 0 shared with Kernel. - [Arize AI](https://www.usedby.ai/tools/arize-ai.md): 37 public customers, 0 shared with Kernel. - [LangChain](https://www.usedby.ai/tools/langchain.md): 35 public customers, 0 shared with Kernel. - [TrueFoundry](https://www.usedby.ai/tools/truefoundry.md): 27 public customers, 0 shared with Kernel. More: https://www.usedby.ai/alternatives/kernel.md --- Source: https://www.usedby.ai/tools/kernel · How we check: https://www.usedby.ai/methodology