#25 Ruby on Rails application performance and security tools

Security - 

rack-attack gem

Brakeman gem

Performance tools - 

bullet

rails_best_practice

 rubycritic,  rubocop

 rack-mini-profiler

 spring, memory_profiler

 Appsignal(paid)

New Relic(paid)

 Bullet gem(N+1 query)

 rails_best_practice

 rubycritic

  rubocop

brakeman

 rack-mini-profiler

 spring

memory_prof