BetterErrors/better_errors

Health v2 · maintenance only

Adoption not part of the score

6862 stars · 431 forks observed · 2026-08-28

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

Better Errors is a Ruby gem that replaces the standard Rails error page with a richer, more useful one, and works as Rack middleware in any Rack app. It provides full stack traces, source code inspection, variable inspection, a live REPL on each stack frame, and editor links.

Use cases

• debug rails exceptions with a better error page
• inspect local variables in stack frames during development
• get a live REPL on error stack frames in a rack app
• open the failing source line directly in my editor
• see useful error info for non-html requests

When to choose

• you develop Rails or Rack apps in Ruby and want far better exception pages
• you want REPL and variable inspection at each frame of a stack trace
• you want editor deep links from error pages

When to avoid

• in production environments, since it exposes source code and a REPL
• for non-Ruby or non-Rack web frameworks
• you only need logging rather than interactive error pages

Facets

library · maturity maintenance

middleware error-handling developer-tools web-framework web-development developer-tools backend ruby rack-middleware error-page repl debugging rails development-tools web-server

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