Top 4 Ruby Debugger Projects

Pry

35 6,715 6.7 Ruby

A runtime developer console and IRB alternative with powerful introspection capabilities.

Project mention: Ruby 3.3 | news.ycombinator.com | 2023-12-24

that's surprising considering `pry`[1] is such an amazing debugger IMO.
[1] https://github.com/pry/pry

Byebug

15 3,322 0.0 Ruby

Debugging in Ruby 2

Project mention: Why does pry/Zeitwerk have issues loading constants in breakpoint context? | /r/rails | 2023-05-01

Just pry or with byebug? If the latter: https://github.com/deivid-rodriguez/byebug/issues/564

InfluxDB

www.influxdata.com sponsored

Power Real-Time Data Analytics at Scale. Get real-time insights from all types of time series data with InfluxDB. Ingest, query, and analyze billions of data points in real-time with unbounded cardinality.
Pry Byebug

4 1,975 0.0 Ruby

Step-by-step debugging and stack navigation in Pry
debug

28 1,077 8.5 Ruby

Debugging functionality for Ruby (by ruby)

Project mention: Metaprogramming in Ruby: It's All About the Self (2009) | news.ycombinator.com | 2024-04-13

I've written Ruby for coming up on 20 years, so to be honest I haven't paid attention to what is written on that subject in recent years.
Bundler shouldn't be running inside a trap context, but you might be running into a situation where standard input/output from the actual process triggering your breakpoint has been redirected. In that case, ruby-debug[1] is a good option, as you attach to it from outside[2]. Basically, run "rdbg --open yourscript.rb" and then use rdbg -A from another terminal.
You use Pry remotely too[3] if you prefer.
[1] https://github.com/ruby/debug
[2] https://github.com/ruby/debug?tab=readme-ov-file#remote-debu...
[3] https://github.com/Mon-Ouie/pry-remote

NOTE: The open source projects on this list are ordered by number of github stars. The number of mentions indicates repo mentiontions in the last 12 Months or since we started tracking (Dec 2020).