If you're looking for a development tool that offers contextual documentation and related discussions for any open file, Unblocked is well worth a look. It brings knowledge from GitHub, Slack and Confluence into your source code so you can understand code subtleties and find related documents and previous discussions. It also offers augmented source code, fact-checked answers, role-based access control and support for several IDEs, including Visual Studio Code and JetBrains IDEs.
Another option is RunLLM, a custom-built developer assistant that learns from a technology's APIs, documentation and community to provide detailed answers. It pulls information from multiple sources and continually improves its answers based on usage patterns and feedback so it can be consistent and accurate. It works with chat apps like Slack and Discord, so it's a good option for developer teams.
If you prefer something more conversational, check out ExplainIt. This chat interface uses AI to provide context-aware answers and lets you have follow-up conversations. It's got a simple interface, automated content crawling and customization options, so it's good for developers and teams that want to get their community involved with interactive documentation.