Compare software

Overarch vs LikeC4: catalog facts
Overarch	LikeC4
Free Free and open source under the EPL-1.0 license.	Free Free and open source under the MIT License.
Command line	Web, Command line
Supports C4 and several UML diagram types Separates architecture models from their views	Generates diagrams from architecture models in code Supports custom notation and nested model levels
Uses data files to define models and views	Architecture definitions use LikeC4's own language
Downloadable app	Downloadable app, Web application
Open source	Open source
License: EPL-1.0	License: MIT
Not stated if an account is needed	Not stated if an account is needed
Not stated if it works offline	Not stated if it works offline
Official website Full listing and sources Checked October 8, 2026	Official website Full listing and sources Checked October 8, 2026

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