7-Zip is an Open Source File Compression & Archiver software for Windows 11/10 PC 64-bit too. Read review & download it free. Portable version available.

The best file compression software of 2025 in full: Why you can trust TechRadar We spend hours testing every product or service we review, so you can be sure you're buying the best.

In either case, a data-compression tool can help you out. We know of three free capable compression tools for your file zipping and unzipping needs.

The software is similar in function to other file compression software like WinZip, 7-Zip, etc but boasts an alternative user interface.

A British startup says it has achieved a breakthrough in data compression with a new tool which it claims can deliver up to 65% lossless file reduction.