Pretty your exception backtrace.

Show Ruby script with execution results.

safepoint-based sampling performance profiler for Ruby

Build Ruby from source code.

This gem provide `finalize_block` method.

GitHub Action for lumitrace: trace a PR's changed lines during tests and post the results as a Check Run.

lumitrace_sample_project

Analyze your Ruby scripts with prism

kv: A page viewer written in Ruby

Inline expression tracing for Ruby

vim clone on Ruby with agentic coding

to keep namespace

Ractor::LVar

namespace for debug.gem (rdbg command)

mysql2_recorder

Dump compiled iseq by binary (kakidasu) and load binary (yomidasu)

Launch [debugger](https://github.com/ruby/debug) if spec is failed.

iseq_collector gem

プレゼントを提供するためのウェブアプリケーション

SimplePaste web application

MaNy project examples

MmappedString

Sync modified files using pscp on Windows.