System 3.3 is like System 3.2, just with minor bug fixes and feature improvements. It was released with Finder 5.4 in January 1987 as part of the AppleShare Work Station installer disk, providing AppleShare 1.0 services for the Mac 512k. Interestingly, it was introduced at the same time as System 4.0, marking the first time Apple updated a previous version of the System while releasing a new feature version.
- The develop CD and its spawn by Eric Rasmussen, Apple Macintosh before System 7. Archived 2011-11-22.
- System 3.3 / Finder 5.4 (System Software 2.0), The Mac 512. Archived 2016-12-02.
- Macworld Mac SECRETS by David Pogue, 5th Edition p.299. 1999.