Compare software

ko vs Railpack: catalog facts
ko	Railpack
Free Free to use; the source is published on GitHub.	Free Free and open source under the MIT licence.
Command line	Windows, Command line
No Dockerfile or Docker installation needed Multi-platform builds and SBOMs by default	Builds images without writing a Dockerfile Supports many languages and popular static site frameworks
Only for Go applications Not suited to images needing cgo or OS packages	Requires BuildKit to build images Automatic detection may need config overrides for unusual projects
Downloadable app	Downloadable app
Open source	Open source
License not stated	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 September 24, 2026	Official website Full listing and sources Checked October 2, 2026

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