"Must Have" software
There's a very long list I'm sure, but some I couldn't do without are DirectoryOpus4 (great file management prog), WHDLoad (games installers from
www.whdload.de which can make even very old games work on your A1200) ToolsDaemon (for launching any game or util from menus at the top of your Workbench screen) and ADF-Blitzer (for creating and unpacking ADF files) :-)