If you're looking for a NeRF library that's open to community contributions and has a rich config system for configuring models, Nerfstudio is a great option. It's an open-source, modular API for creating, training and testing NeRFs, with a lightweight interface for exploring the technology deeply. It supports several built-in NeRF methods, but can be extended with third-party implementations. The project has a detailed config system, an active community eager to contribute, and plenty of documentation like quick start guides and tutorials to help beginners and experts.
If you need a foundation that supports a wider range of AI tasks, you might want to look at LastMile AI. This full-stack developer platform lets engineers get generative AI work into production. It includes tools like AIConfig for optimizing model parameters and version control, which could be useful for managing your NeRF models. But it's geared more toward generative AI work across multiple modalities, with tools for text, image and audio tasks.