System Tools

• Little snitch ( €29 – discount 20% DT-AFE7-8F6B) – Firewall
• Cyber duck – FTP, SFTP, WebDav, S3 client
• Disk Inventory X – disk usage utility
• AppTrap – advanced application uninstallation
• Onyx – maintenance tool and optimizer
• Get Backup (free/paid pro) – backup tool
• iTerm2 – terminal replacement

External articles:

• http://lifehacker.com/5252183/clean-up-and-revive-your-bloated-sluggish-mac

Programming

• SmartSVN (free for personal use,  $69/license) – svn gui tool
• SmartGit/Hg  (free) – git / hg gui tool

File Manager

• Path Finder ($40)
• Fork lift ($30)
• Disk Order ($35)