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lol_dba is a small package of rake tasks that scan your application models and displays a list of columns that probably should be indexed. Also, it can generate .sql migration scripts.

Fastest end-to-end CSV ingestion for Ruby (with C acceleration). SmarterCSV auto-detects formats, applies smart defaults, and returns Rails-ready hashes for seamless use with ActiveRecord, Sidekiq, parallel jobs, and S3 pipelines — even for messy user-uploaded real-world data.

  • csv
  • csv-converter
  • csv-export
  • csv-file

Ruby gem for web scraping purposes. It scrapes a given URL, and returns you its title, meta description, meta keywords, links, images...