Question: I'm looking for a tool that enables web-based augmented reality and 3D experiences accessible through a web browser.

If you're looking for a service that lets you build web-based augmented reality (AR) and 3D content that can be viewed in a browser, 8th Wall is a good choice. It's a collaborative environment for building and publishing WebXR and 3D content without requiring separate apps. The service spans a broad range of use cases, including gaming, e-commerce and entertainment, so it's good for marketing, education and retail customers.

Another good choice is Blippar, which offers a collection of tools and services for building AR experiences. An intuitive interface and tools like Blippbuilder Studio let developers create AR content without programming. The service also offers a WebAR SDK for more advanced programming and support for popular frameworks like PlayCanvas and A-Frame. That makes it good for both simple and sophisticated AR projects.

Cappasity is also worth a look if you're in e-commerce. The cloud-based service lets companies build and deliver rich 3D and AR shopping experiences. It includes tools to easily create 3D images and add AR, and that can boost customer engagement and conversion rates. It's got a variety of pricing tiers, so it's good for companies large and small.

If you want more interactive and immersive marketing, Hololink offers an AR editor that's easy to use and that offers features like custom branding, product visualization and multi-image tracking. The service is designed to get conversions and engagement through interactive marketing experiences, so it's good for brands that want to get more out of their customers.