if ssconvert from gnumeric is installed it can convert xls and xlsx as well (single sheet)

A simple way to consume CSV and XLSX test data for use in your tests.

Parses Excel files(xlsx) read by other file input plugins.

Extensions for ruby-filewatcher, like xls, xlsx

Generate axlsx object of an any class. After you can generate xlsx file, or change axslx object.

Generate localizable strings from xlsx file.

Converts Excel .xls and .xlsx files to CSV.

A Ruby spreadsheet parser for Excel (xlsx, xlsm).

It extracts data from exported .xlsx file of SEB bank statements and generates a financial report.

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

support to grep something in .xlsx files

Import a xlxs file

Embulk input plugin to read xlsx files

Export your data as various types of spreadsheets. Supports csv and xlsx output.

Simple yet powerful library for importing tabular data from CSV, HTML, XLS and XLSX files, including support for auto-detecting column order, parsing/validating cell data, aggregating errors, etc.

Meta Reports provides a meta language and data structure to create a 'meta' report. This report can then be exported into any format desired. MR provides HTML, PDF, and XLSX exports built in.

A web resource scraper that lets you define xpath selectors, clues and hooks for custom parsing as well as export to xlsx.

Rails Excel strategy to write xlsx files through writeexcel gem

A tool to convert xls, xlsx, ect to csv

Device Magic users can upload .xlsx files to be referenced within their mobile forms. This project is aimed at automating the same process for Google Sheets to increase the flexibility of resources.