Open source focus

Open Source Alternatives to Gtmz

8 open source Web Development options similar to Gtmz, ranked by named competitors first, sector overlap, and our 0-100 AI-readiness score. Every company listed publishes its source: each one carries an open source sector tag and a public GitHub repository.

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Elementor
Not rated
Elementor is the leading open-source website builder platform for WordPress professionals, enabling pixel-perfect design and efficient site creation with AI-assisted tools.
Open source · Self-hostable
TanStack
Not rated
Developer tools for building modern web applications.
Open source · Self-hostable
Pretext
Not rated
A zero-dependency TypeScript library for multiline text measurement and layout entirely in userland, bypassing DOM performance bottlenecks.
Open source · Self-hostable
WP Job Manager
Not rated
A free WordPress job board plugin
Open source
esbuild
Not rated
Extremely fast JavaScript bundler and minifier for the web, written in Go.
Open source · Self-hostable
WebDriverIO
Not rated
An open-source, Node.js-based framework for web and mobile automation testing.
Open source · Self-hostable
Andurel V2
Not rated
Space-Grade Go Web Framework
Open source
TestCafe
Not rated
An open-source Node.js tool for automated web testing, simplifying end-to-end test creation and execution across browsers.
Open source · Self-hostable

Company	License	Founded	Rating	Reviews
ElementorElementor is the leading open-source website builder platform for WordPress professionals, enabling pixel-perfect design and efficient site creation with AI-assisted tools.	Open source · Self-hostable	-	Not rated	-
TanStackDeveloper tools for building modern web applications.	Open source · Self-hostable	-	Not rated	-
PretextA zero-dependency TypeScript library for multiline text measurement and layout entirely in userland, bypassing DOM performance bottlenecks.	Open source · Self-hostable	-	Not rated	-
WP Job ManagerA free WordPress job board plugin	Open source	-	Not rated	-
esbuildExtremely fast JavaScript bundler and minifier for the web, written in Go.	Open source · Self-hostable	-	Not rated	-
WebDriverIOAn open-source, Node.js-based framework for web and mobile automation testing.	Open source · Self-hostable	-	Not rated	-
Andurel V2Space-Grade Go Web Framework	Open source	-	Not rated	-
TestCafeAn open-source Node.js tool for automated web testing, simplifying end-to-end test creation and execution across browsers.	Open source · Self-hostable	-	Not rated	-