mtCellEdit is a simple, lightweight spreadsheet program created by the author to handle day-to-day tasks without the bloat of larger programs. It has a user-friendly GUI using Qt5 and a core C/C++ library for reading, writing, and manipulating spreadsheets. The unique aspect is its portable ZIP file format containing TSV text files, allowing data to be easily accessed by any modern spreadsheet program. The author deliberately avoided binary and XML formats to prevent data from becoming inaccessible. mtCellEdit is designed for GNU/Linux systems and is distributed under the GNU General Public License version 3. (Total words: 97)
https://www.marktyler.org/ced/