Startups > Docker

Docker

Docker helps developers package and run applications in isolated containers anywhere.

Series C $541M total Founded 2011 San Francisco, California 410 employees

Docker is a containerization platform that packages applications and their dependencies into lightweight, isolated containers that run consistently across any infrastructure. It solves the 'works on my machine' problem by virtualizing the operating system rather than hardware, enabling developers to build, ship, and run applications faster. With over 10 million registered developers and 56,000 commercial customers including 70% of Fortune 100 companies, Docker has become the industry standard for application deployment and DevOps workflows.

Problem solved

Development teams face deployment inconsistencies across environments, slow application delivery cycles, and infrastructure management complexity when building distributed applications.

Target customer

Enterprise software companies, mid-market DevOps teams, and Fortune 500 organizations with complex deployment requirements. Specifically: companies with 250+ employees or $10M+ annual revenue using containerized infrastructure.

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Founders

Solomon Hykes

Founder

Started Docker as an internal project within dotCloud (PaaS company) in France; publicly demoed Docker at PyCon in March 2013; left the company in March 2018.

Kamel Founadi

Co-founder

Co-founded dotCloud in 2008 in Paris with Hykes and Pahl; incorporated Docker Inc. in the United States in 2010.

Sebastien Pahl

Co-founder

Co-founded dotCloud in 2008 in Paris with Hykes and Founadi.

Funding history

Seed $800K February 2011 Led by Angel investors · Chris Sacca, Jerry Yang, Ron Conway

Series A $10M March 2011 Led by Benchmark Capital · Trinity Ventures

Series B $15M January 2014 Led by Greylock Partners · Unknown

Series C $40M September 2014 Led by Sequoia Capital · Unknown

Series D $95M April 2015 Led by Insight Venture Partners · Unknown

Series D (continued) $18M November 2015 Led by Insight Venture Partners · Unknown

Series A (recapitalization) $35M November 2019 Led by Unknown · Unknown

Series B (recapitalization) $23M March 2021 Led by Tribe Capital · Unknown

Series C (recapitalization) $105M March 2022 Led by Bain Capital · Unknown

Total raised: $541M

Industries

Cloud Computing Open Source Software

Pricing

Docker Desktop: Free for individuals, small businesses (<250 employees, <$10M revenue), educational institutions, and non-commercial open-source projects. Paid subscriptions for enterprises: Pro ($5/user/month), Team ($9/user/month), Business ($24/user/month). Docker Hardened Images available free under Apache 2.0 license as of May 2025.

Notable customers

Netflix, Wachovia, Orbital Sciences, Adobe, Attentive, Crypto.com, 70% of Fortune 100, 9 of top 10 tech companies, 8 of top 10 banks, 8 of top 10 retailers, 8 of top 10 media companies, 7 of top 10 healthcare companies

Integrations

Kubernetes, Oracle Cloud Infrastructure, various CI/CD platforms, cloud providers (AWS, Azure, Google Cloud)

Website

docker.com/

Competitors

Podman

Open-source, daemonless container engine with enhanced security through rootless mode support; lacks Docker's commercial ecosystem and user base.

Containerd

Minimal container runtime maintained by CNCF; provides core container functionality without Docker's developer tooling and commercial support.

OrbStack

macOS-only alternative optimized for speed and lightweight performance; lacks cross-platform support and enterprise features.

Kubernetes

Container orchestration platform for managing clusters of containers; complementary rather than competitive—orchestrates Docker containers at scale.

Why this matters: Docker transformed software deployment by making containerization the industry standard, adopted by 70% of Fortune 100 companies and 10+ million developers. With $541M in funding and recent moves like free Hardened Images and new leadership from Oracle Cloud Infrastructure, Docker continues evolving to meet enterprise security and operational demands.

Best for: Engineering teams building and deploying distributed applications who need consistent environments across development, testing, and production; enterprises requiring standardized containerization practices.

Use cases

Eliminating 'Works on My Machine' Problems

Development teams collaborating on code ensure applications run identically across developers' machines, staging, and production environments. Docker containers package the application with all dependencies, eliminating environment-specific configuration issues that slow down debugging and deployment.

Accelerating Software Delivery Cycles

Organizations using Docker reduce time-to-production by packaging, testing, and deploying code faster without infrastructure differences. Containers boot in milliseconds (vs. minutes for VMs) and take minimal disk space, enabling rapid iteration and rollback capabilities.

Running Multiple Applications on Single Infrastructure

DevOps teams maximize server utilization by running dozens of isolated containers simultaneously on one host, each with independent application stacks. Docker's lightweight isolation (OS-level vs. hardware virtualization) delivers cost savings and operational simplicity.

Standardizing Enterprise Infrastructure

Large enterprises (Fortune 100 companies) standardize application deployment across hybrid cloud environments using Docker containers as a portable unit. Docker Hardened Images provide security-focused base images, enabling compliance and consistent vulnerability management across the organization.

Alternatives

Podman Choose Podman for open-source containerization with enhanced security features and no daemon; Docker for broader ecosystem support and commercial tooling.

Containerd Choose Containerd for minimal container runtime; Docker for complete developer experience including CLI, Compose, and commercial support.

OrbStack Choose OrbStack for macOS-specific performance optimization; Docker for cross-platform support and enterprise features.

FAQ

What does Docker do? +

Docker packages applications and their dependencies into lightweight, isolated containers that run consistently across any infrastructure. Containers virtualize the operating system rather than hardware, making them significantly faster and more efficient than virtual machines. Docker eliminates deployment inconsistencies and accelerates software delivery from development through production.

How much does Docker cost? +

Docker Desktop is free for individuals, small businesses (under 250 employees and $10M revenue), educational institutions, and non-commercial open-source projects. Paid subscriptions for enterprises: Pro ($5/user/month), Team ($9/user/month), Business ($24/user/month). Docker Hardened Images are free under Apache 2.0 license.

What are alternatives to Docker? +

Podman is an open-source, daemonless container engine with enhanced security; Containerd is a minimal runtime maintained by CNCF; OrbStack optimizes Docker Desktop for macOS. Kubernetes complements Docker by orchestrating container clusters at scale.

Who uses Docker? +

Docker serves 56,000+ commercial customers including 70% of Fortune 100 companies, 9 of top 10 tech firms, 8 of top 10 banks, and major enterprises like Netflix, Adobe, and Wachovia. Over 10 million registered developers use Docker globally.

How does Docker compare to Kubernetes? +

Docker is a containerization platform that packages applications, while Kubernetes is a container orchestration tool that manages and scales Docker containers across clusters. They are complementary: Docker packages applications, Kubernetes deploys and manages them at scale across infrastructure.