With recent GA4 migration, my friends are exploring better ways to integrate various essential website scripts(e.g. product analytics, crash reporting, advertising, customer engagement, etc.). Google Tag Manager (GTM) is one solution.

RudderStack is a mature Open-Source alternative to GTM that can be self-hosted and has similar functionality i.e. load various product scripts without changing code and send events to desired destinations

Top 5 reasons to replace GTM with RudderStack

• You get full-control of your customer data while making the site/app load faster as you don't have to load multiple scripts
• As you can load and manage scripts via a central dashboard, it becomes easy, quick, and less error prone to replace any particular script with its alternative e.g. replacing Google Analytics (GA) with GA4 or Mixpanel
• It is OSS and not owned by Google
• Tranformations: Transform the events(using your own JS/python code) the way you want before reaching the destination e.g. remove personally identifiable information, enrich event data with some 3rd party information
• Can send customer data from website and mobile apps(using RudderStack SDKs) to warehouses(Postgres, S3, Redshift, Sbowflake, Bigquery, etc.) and 200+ destinations

More details on GitHub repository - https://github.com/rudderlabs/rudder-server

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