A-Zippr lets you compress and uncompress files with tons of options on your Mac.
Squoosh allows you to use some of the sophisticated methods of compression to compress your photos on the web.
Secure Archive lets you compress and encrypt your files using multiple encryption algorithms.
Caesium is a small utility that lets you significantly reduce size of your images.
E-Mage helps you compress your images without any loss in quality on your computers.
Bitser is a file compression and decompression tool but with more of a backup utility interface for Windows PCs.
YouCompress lets you compress a number of file formats on the web for free.
WeCompress lets you compress most popular file formats online using your web browser.
iZip helps you zip, unzip, and encrypt files easily on your Mac.
Sometimes you may just want to preview the files inside an archive without extracting it. Dr. Unarchiver helps you do just that.
ImageOptim helps you remove the extra data in your images so they are smaller in size and load faster when you upload them to the Internet.
Zipware is a free zip software for Windows PCs with support for a number of archive formats including the latest RAR5 format.
Bandizip is a lightweight and free zip archiver for Windows with support for many archive formats.
UnRarX is a WinRAR like utility for Mac that allows you to extract RAR archives on your machine.
File Roller is a free archiver and archive extraction tool for Linux computers.
PeaZip is a free and open source archiver and archive extraction tool for Windows and Linux.
WinRAR is a file archiver and archive extraction tool for Windows PCs.
The Unarchiver is a free archive extraction tool for Mac that supports a number of archive formats.