If you're looking for a way to get non-technical team members up to speed on your codebase, Ask Swimm is worth a look. It uses a combination of collective team knowledge and static analysis to give you context-rich answers to complex questions. By tapping into senior engineers' collective knowledge, it can help teams quickly grasp the parts of the codebase that aren't well documented, and get more work done and better code out of the process.
Another option is Sourcegraph, a full-featured code intelligence platform. It includes tools like Cody, Code Search, Batch Changes and Code Insights to help developers better understand and navigate large codebases. With features like cross-repository code navigation and fast, accurate code search, it supports multiple programming languages and integrates with popular IDEs.
If you prefer something more integrated, Unblocked pulls knowledge from sources like GitHub, Slack and Confluence into your codebase. It can give you quick answers to questions, surface relevant documentation and explain subtleties of code. It's designed with security in mind, with features like role-based access control and persistent suggested follow-ups, so it can be a good option for team collaboration.
Last, Mutable.ai automates code documentation to help people get up to speed and get more work done. It can generate wiki articles based on the codebase and offer an AI chat interface to extract answers. The idea is to make documentation easier and faster so you can get new team members up to speed more quickly.