dataslayer is a versatile Firefox extension designed for web developers focused on tag management. This subscription-based tool supports a variety of tag management systems (TMS) including Google Tag Manager, Adobe Launch, Tealium, and custom data layers. Users can easily manage and visualize their data layers and variables, streamlining the web development process.

In addition to supporting various TMS, dataslayer provides insights into tags such as pageviews and click events from platforms like Google Analytics and Adobe Analytics. It is capable of handling multiple tag management data layers on a single page, even those embedded within iframes. This functionality makes it a valuable asset for developers looking to enhance their web analytics and tracking capabilities.