Image to ZX Spec is written in Java and will work on Windows, Linux (tested on Ubuntu) or any Java 6 capable operating system.

Changes:
Version 1.3.0_01
- Added support for drag and drop on Ubuntu.
- Minor Ubuntu window size issue fixed.
- Fixed bad line numbering in Simple BASIC Loader.
Downloads:
Image to ZX Spec 1.3.0_01 Standalone (direct download, just unzip and double click jar file to start).
Try Image to ZX Spec 1.3.0_01 online.
Image to ZX Spec 1.3.0_01 Source code and Javadoc (note GPL 2.0 licenced).
Tutorial and demo videos