CircleCI is a cloud-native continuous integration and continuous delivery (CI/CD) platform. Builds run on a credits-based, usage-based model across Docker, Linux, Arm, Windows, macOS and self-hosted runners, with orbs for reusable pipeline configuration.
Free tier $0/mo (30,000 credits); Performance from $15/mo (additional 25,000 credits $15); Scale custom annual
DigitalOcean is a developer-focused cloud infrastructure provider: Droplets (Linux VMs), managed databases, Kubernetes, App Platform, storage and GPU/inference services with simple, predictable pricing.
Droplets from $4/mo; per-second billing with monthly caps
Docker is a containerization platform for building, shipping, and running applications consistently across any environment. Docker Desktop is its developer tool for container management, including the Docker Engine runtime, CLI, Compose, Build, built-in Kubernetes, volume management, and debugging tools. It is trusted by more than 20 million developers.
Free Personal plan; Pro from $9/user/mo; Team from $15/user/mo