Top 10 freeware for Mac OS by lifehacker.com

Top free programs:

Quicksilver . He knows how to do everything with the system, and does it with the help of a unified interface and only with the help of a keyboard.
TextWrangler. Free Textmate replacement. Younger brother BBedit.
SilverKeeper . Allows you to make backups on an external disk of arbitrary data from your poppy on a schedule.
Adium . No comments. Great IM client.
HandBrake . Allows you to backup your DVDs in MPEG-4 format.
iSquint . Video Converter for iPod.
VirtueDesktops . Virtual Desktop Manager.
The Unarchiver . Multi-format archiver.
VLC . Open source video player and support for a huge number of formats.
iTerm . Terminal software supporting tabs, transparency, with rich configuration options.

Source: https://habr.com/ru/post/30928/