Compare software

pack vs Railpack: catalog facts
pack	Railpack
Free Free and open source under the Apache 2.0 licence.	Free Free and open source under the MIT licence.
Windows, Command line	Windows, Command line
Builds container images from source without a Dockerfile Official CLI of the Cloud Native Buildpacks project	Builds images without writing a Dockerfile Supports many languages and popular static site frameworks
Needs a container runtime and builder images to be useful Buildpack concepts take time to learn	Requires BuildKit to build images Automatic detection may need config overrides for unusual projects
Downloadable app	Downloadable app
Open source	Open source
License: Apache-2.0	License: MIT
No account needed	No account needed
Not stated if it works offline	Not stated if it works offline
Official website Full listing and sources Checked October 2, 2026	Official website Full listing and sources Checked October 2, 2026

Catalog facts only. Anything “not stated” is unconfirmed. Check full listings for details.