## WinRAR

### 官方主页

WinRAR is a powerful archive manager. It can backup your data and reduce the size of email attachments, open and unpack RAR, ZIP and other files downloaded from Internet, create new archives in RAR and ZIP file format.

https://www.rarlab.com

## PDF Password Remover

Mgosoft PDF Password Remover is a simple, stand-alone application that can be used to remove the security on Adobe Acrobat PDF files. It can help you generate PDF files with no password from the original PDF files which are not permitted to be edited, changed, printed, copied, added annotations, etc. Mgosoft PDF Encrypt does NOT require Adobe Acrobat, or any other Adobe products.
Please note that PDF Password Remover doesn’t work with documents which have user-level passwords (preventing the files from being opened), if both user and owner passwords are unknown.

### Key Functions

• Standalone program. Does NOT require Adobe Acrobat or Reader.
• Decrypt PDF files protected by owner/master passwords.
• Remove user/open passwords from PDFs file only if you have the user/open passwords of the PDF files.
• Decrypt protected Adobe Acrobat PDF files, removing restrictions on printing, editing, copying.
• Remove the security settings from your encrypted PDF file.
• Able to remove 40 and 128-bit encryption owner passwords.
• Support 128-bit AES protected PDF files.
• Able to remove AES encryption owner passwords.
• Support drag and drop.
• Optimize the decryption speed for large PDF files.
• Optimize the processing for special PDF forms.
• Set the document title, subject, author and keywords options.
• Support add Watermark.
• Very easy to use.
• Use it on all Windows version including the latest builds of Windows 10.

### 官方主页

http://www.mgosoft.com/pdf-pwd-remover.html

## QTranslate

### 官方主页

https://quest-app.appspot.com

QTranslate is a free translator for Windows. With this small utility, you simply select the text you want to translate and then press the hot key ( Ctrl+Q to show translation in the popup window or Double Ctrl click to show the translation in the main window). QTranslate also has the ability to speak text Ctrl+E and perform a dictionary search Ctrl+Shift+Q . Also, you can open the main window and type text manually.

QTranslate translates text by using online translation services, so you need an Internet connection.

The following translation services are supported:

• Babylon
• Baidu
• DeepL
• Microsoft
• Naver
• Promt
• Yandex
• youdao

There are three modes of translation by mouse selection:

• Show icon (select text in a program -> QTranslate icon will appear near cursor. Click the icon -> popup window with the translation of selected text will appear)
• Show translation (select text in a program -> popup window with translation of the selected text will appear immediately)
• Show translation and read (the same as previous plus speaking aloud selected text)

The main features:

• Text translation in any application that supports text selection
• Speech recognition
• Image text recognition (OCR API provided by OCR.SPACE)
• Text to speech synthesis
• Search in online dictionaries
• Search in offline XDXF dictionaries
• Spell checking
• Word suggestion/autocomplete
• History of translations
• Virtual keyboard