cordx56/rustowl

Health v2 · maintenance only

Adoption not part of the score

5198 stars · 112 forks observed · 2026-08-28

What it is AI-extracted, prompt v1, taxonomy v1, 2026-08-29, confidence not recorded

RustOwl is a tool that visualizes ownership movement and variable lifetimes in Rust code using colored underlines, helping with debugging borrow-checker errors and optimization. It integrates with editors via a VS Code extension, Neovim plugin, and Emacs package, backed by a core analysis tool distributed on crates.io.

Use cases

• understand why the borrow checker rejects my Rust code
• visualize variable lifetimes in Rust
• debug ownership move errors in Rust
• see where a value is borrowed mutably vs immutably
• learn Rust ownership and borrowing concepts
• find lifetime overlap errors in Rust code

When to choose

• you're debugging borrow-checker or lifetime errors in Rust
• you're learning Rust's ownership model and want visual feedback
• you want to see move and borrow spans directly in your editor

When to avoid

• you need a general-purpose Rust IDE - use rust-analyzer instead
• you work in a language other than Rust
• you need automated fixes rather than visualization

Facets

plugin · maturity active

editor developer-tools data-visualization developer-tools programming-languages text-editors rust editor-plugin cross-platform rust-analyzer-companion lsp ownership-visualization lifetime-debugging vscode-extension neovim-plugin emacs-package

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