Code Navigator is part of DevStudio — a free, in-browser collection of developer utilities that work without sign-up, installation, or any backend service. Workspace-mount code explorer — file tree + Monaco editor + LSP-driven symbol-tree side panel (rust-analyzer / gopls / pyright / tsserver / clangd) via gateway-internal lsp_proxy, all running entirely on your device. Because the page never uploads what you paste, you can run sensitive payloads, configuration files, secrets, or production data through it with confidence: nothing leaves your browser tab. Use Code Navigator for ad-hoc debugging, code review, log triage, release prep, learning a new format, or as a quick scratchpad while you build. If you use this tool a lot, pair it with AI Agent Runtime, DevOps Debugger, Diagram Designer, and the rest of the DevStudio toolkit for related developer workflows.