OSX is a capable operating system out of the box, but there are a few tools that I like to add to every new system I get. I’ve been asked for the list a few times, so in no particular order, here goes:
Keka is a free file archiver for Mac OS X. The main compression core is p7zip (7-zip port). Compression formats supported: 7z, Zip, Tar, Gzip, Bzip2, DMG, ISO. Extraction formats supported: RAR, 7z, Lzma, Zip, Tar, Gzip, Bzip2, ISO, EXE, CAB, PAX, ACE (PPC).
Chicken of the VNC
Chicken is a VNC client for Mac OS X. A VNC client allows remote access to another computer over the network. Chicken is based on Chicken of the VNC.
LimeChat is an IRC client for Mac OS X
TextWrangler is a very capable text editor.
Virtualize all the things. Virtualbox and Parellels also work well here, but VMWare remains my preference for compatibility and functionality.
Console into things.
Zenmap is the official Nmap Security Scanner GUI. It is a multi-platform (Linux, Windows, Mac OS X, BSD, etc.)
Vienna is an RSS/ATOM reader for OSX.
HandBrake is a tool for converting video from nearly any format to a selection of modern, widely supported codecs.
A Linux command to continuously execute a program and monitor output.
Did I miss anything? Let me know!