See which companies use your open source and what they do next

Scarf connects signals from downloads, packages, documentation, and telemetry so your team can see where adoption is growing and act on it without storing personally identifiable information.

Free usage tracking No PII stored
Open source package activity visualization

Trusted By

Customer logo
Astronomer
Chronosphere
InfluxData
Weaviate
Modular
Carnegie Mellon
n8n
Redpanda
Sysdig
YugabyteDB
Temporal
DataStax
Liquibase

Built on open source usage at global scale

Scarf turns billions of daily usage signals into a view of adoption across projects, versions, and companies.

Daily OSS Downloads Tracked

2B

Unique OSS End Users Tracked

308M

Companies Surfaced

3.3M

Tracking of Fortune 500

96%

How Scarf works

From open source activity to account-level intelligence

Scarf connects the signals around how organizations discover, evaluate, and adopt your software, then gives your team practical ways to use them.

Capture real adoption signals

Connect package and container registries, Scarf Gateway, SDKs, pixels, or your own event data.

See companies and adoption patterns

Understand which organizations are active, what they use, and how their engagement changes over time. Raw IP addresses are not retained.

Act on the signal

Ask questions in Scarf, filter and export accounts, sync data to GTM tools, or work through Slack, APIs, and webhooks.

Customer outcome

Liquibase built its go-to-market model around real community adoption

At Liquibase, community usage identified by Scarf is a core requirement for the company's top ICP tiers and now guides territory planning, ABM, and nurture.

Read the case study
90–95% of new logo wins originate from Liquibase Community users
90%+ of deals are marketing-driven, powered by an ICP model that starts with Scarf signals

Use the same adoption data across your business

Ask direct questions of your usage data

Use Scarf AI to investigate adoption across downloads, packages, containers, documentation, and binaries.

Put adoption signals into your GTM systems

Filter and qualify accounts, then send the context to sales, marketing, RevOps, and DevRel.

Monitor OSS consumption across your organization

Track what your teams and workloads are downloading so security can investigate risky or unexpected open source usage sooner.

Features

Follow adoption from first touch to production

Follow adoption from first touch to production
Features

See how people and organizations move through your user journey

See how people and organizations move through your user journey
Features

Turn OSS intelligence into action across your business

Turn OSS intelligence into action across your business
Scarf AI

Ask Scarf what changed and why it matters

Use Scarf AI to investigate adoption, compare releases, prepare exports, and run repeatable analyses from Scarf or Slack. Every answer is grounded in your Scarf usage data.

Start free

Put Scarf data in the systems your team already uses

Send account and adoption data to Slack, Salesforce, HubSpot, Common Room, or your own tools through exports and APIs.

Learn more about data exports
Scarf data in external systems

Hear it from our customers

Scarf makes it easy to understand how quickly new versions of Linkerd are being adopted and which components are being deployed-data that the container registries have and don't share with us otherwise.

Co-Founder / CTO Buoyant

It's much more popular than we thought. At this stage, we have about 9 million Docker downloads. By monitoring the SDK and game server downloads, we can understand the popularity of different SDKs and the specific uses of the game server, which we couldn't do before. Project observability improves your targeting and allows you to discover new companies for ABM campaigns

Co-founder of Heroic Labs

It’s important for us to understand who is using [our OSS web framework] IHP. Before using Scarf we’ve mostly relied on the data set of existing customers. . . . It only took us a couple of minutes to integrate the Scarf Gateway. Identify potential customers hidden within your OSS users, creating a new category of leads, Open Source Qualified Leads (OQLs)

Founder of Digitally Induced

Outbound outreach to Open Source Qualified Leads saw 2x higher response rates as compared to our outreach campaigns without Scarf data.

Head of Strategy, Unstructured

Today, we track over 36,000 users visiting the documentation. We can see those who are very actively engaged in the ongoing process. This helps us reach out to people in those organizations, effectively guiding our outreach process.

CEO and founder of Diagrid, co-creator of Dapr

I wish I installed [Scarf] the day we launched our docker file.

Co-CEO, Chairman, Cal.com

Scarf proved to be a valuable tool for Nestybox ... It’s one of the few tools that we used weekly and considered critical to better understand Nestybox’s users and potential customers.

Co-Founder of Nestybox (Acquired by Docker)

The list of companies that surfaced from our data in Scarf was important for fundraising to show real-world usage. Showing that big companies were not only downloading Budibase but downloading every new version we released was huge.

Co-Founder & CEO at Budibase

We have been using Scarf to understand how Redpanda is being adopted, and most importantly, how to prioritize engineering efforts for the product. Turns out the world loves Redpanda + Kubernetes more than we thought!

Founder & CEO, Redpanda Data
Start with the adoption you already have

Find the companies using your open source

Start with free usage tracking. Upgrade when you need more company details, workflows, integrations, or history.

Proudly partnering with organizations throughout the open source community

Cloud Native Computing Foundation
The Linux Foundation
Haskell Foundation
MariaDB Foundation
OWASP
Commonhaus Foundation

Approved External Service Provider of the Apache Software Foundation

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