If you're looking for a VNTANA alternative, echo3D is worth a look. This cloud-based service lets you manage, update and share 3D content in real time. It's got sophisticated 3D version control, support for lots of file formats and real-time analytics to see how people are interacting with the 3D content. Echo3D offers a variety of pricing plans, including a free tier, so it should work for small and large operations.
If you're in the eCommerce space, Hexa offers a 3D technology stack designed to bring customizable 3D commerce assets to customers. It lets retailers convert 2D product pages into 3D models, monitor and analyze their quality and distribute them to multiple channels. That could be good for companies that want to bring immersive marketing and AR into their e-commerce sites.
Last, Meshy offers an AI toolkit for generating 3D models from text prompts and 2D images. It can handle a variety of art styles and formats, so you can generate 3D content fast. Meshy is good for AR/VR, gaming and digital design, and it offers a variety of pricing tiers, including a free one.