Mac OS X
Text EditorsGeany
BlueFish
FTP Client
FileZilla
Web Browsers
Firefox
Chromium
Image Editor
The Gimp
Windows
Text EditorsGeany
BlueFish
FTP Client
FileZilla
Web Browsers
Firefox
Chromium
Falkon
Image Editor
The Gimp
GNU/Linux
Text EditorsGeany
BlueFish
FTP Client
FileZilla
gFTP
Web Browsers
Firefox
Chromium
Falkon
Image Editor
The Gimp
You will only need one text editor, ftp client, and image editor. Give them a try and discover the one you like best.