General

• Mac to Linux migration guide

Administrative, Maintenance & Troubleshooting Tools for client computers

• Disk Warrior - recommended disk repair tool
• wget ported to the Mac – wget for Mac OS X Leopard
• OpenTerminal provides a command line interface (alternative to the native Mac Terminal application) whose working directory is automatically set contextually from the Mac GUI window from which Open Terminal is being launched
• Cocktail is a shareware utility that among other things allows to stop, delete and restart Spotlight indexes which may have gotten corrupted and also rebuilding databases such as the locate database.
• a Linux Gnome (Nautilus) DMG-Automounter permitting Mac disk images to be mounted and read on Linux
• AppleJack permits Macintosh computer troubleshooting even when you can't load the GUI, or don't have a startup CD handy. It relies on the user booting the Mac in single user mode (by holding down the Apple Command key + S) and spares the troubleshooter having to remember various procedures and commands. The site project page points visitors to a summary here
• Tiger Cache Cleaner
• Onyx
• SharePoints allows you to set your permissions of shared dirs and pick specific dirs to share, etc. etc.
• BatChmod is a Cocoa utility for manipulating file and folder privileges in Mac OS X, allows you to change permissions of a top level shared directory and copy to enclosed items
• iStat - system monitoring app for Macs
• wget is a free software package for retrieving files using HTTP, HTTPS and FTP and can be installed (via sudo) from the Mac Terminal application command line:
  • 10.3 Jaguar download wget here
  • 10.4 Tiger download the same wget here
  • 10.5 Leopard download wget 1.11.4 here
• MTR 0.7.1, a useful command-line utility which combines ping and traceroute to display the path packets are taking between two machines, downloadable here but see notes about compiling variation required for Tiger 10.4.

Productivity

• Quicksilver - "A unified, extensible interface for working with applications, contacts, music, and other data."

• Proximity - Apple-scripted, bluetooth proximity automation e.g. auto-locking your machine

Speech recognition

• MacSpeech's speech-to-text application Dictate (Intel Macs running 10.4 Tiger or above, only)