A simple way to Open .csv, .xls, .xlsx files. You can convert it to 2D array, hash, data frame.

Embulk input plugin to read xlsx files

Gem intended to analize and deduct data from CSV, XLS, XLSX, files

Transforms Excelx file into Hash Or Json objects

Standardize of operation manner for reading Excel files(.xls, .xlsx).

Allow add JIRA worklog (hours worked) from excel (.xlsx) file via JIRA REST API

Parse Excel spreadsheets with a simple API. Read cell values, formulas, styles, comments, data validations, named ranges, and merged cells from xlsx and xlsm files. Supports streaming from strings and IO objects with lazy row loading for large files.

Scan and replace text in xlsx file

A mountable Rails engine providing a complete data import workflow: upload/configure, preview with validation, and import. Supports CSV, JSON, XLSX, and API sources with a simple DSL for defining import targets.

Extensions for ruby-filewatcher, like xls, xlsx

A Ruby gem that streams and parses large Excel(xlsx and xlsm) files fast and efficiently. Based on Creek gem, but with Multi-threading and Garbage Collection