Simply remove known password from multiple pdf (python or powershell)

This PowerShell Script is used to unprotect EXCEL file without a password

Simple GUI tool for removing protection from Excel spreadsheets

Uxcel is a PHP library that can protect/unprotect some supported document for you.

Java portable app to unprotect all spreadsheets without original passwords.

This automation allows the user to protect an Excel workbook or folder of Excel workbooks with the same password. The automation also allows the user to unprotect an Excel workbook or folder of Excel workbooks by providing the password.

A simple tool to protect / unprotect PDF Files in one clic batch

This is a copy program for 8-bit Atari computers that can read Speedy2700 Turbo Tape System files and can convert them back to plain Atari DOS executable file.

This is set of simple tools for analysing and manipulating files generated and protected by Turbo Copy 3/4 for Atari 8-bit computers.

Unprotect Excel files with a single exe without dependencies. Written in Go.

Script which removes protection from ODS files

PasswordBreaker — это VBA-скрипт для Microsoft Excel, предназначенный для снятия защиты с листов Excel. Скрипт удаляет пароль и показывает, какой пароль был установлен. Полезен в случаях, когда необходимо восстановить доступ к защищенным листам, если пароль забыт.