There are 2 file types use the .OSC file extension:
1. OpenStreetMap Change File
Street map data file created in the OpenStreetMap Change (OSC) format; contains modification data for an existing .OSM street map; enables a central or existing street map to be updated with new data.
Updated: August 21, 2011
2. Obix Source Code File
Developer file written in Obix, a programming language that is designed to reduce programming errors by using the "Fail fast!" system that implements error reduction techniques; can be compiled into Java binaries (.CLASS or .JAR files) using the Obix compiler and then run on a computer that has the Java runtime environment installed.
Obix is distributed in a source code format and can be built on Linux or Windows systems. Obix requires the Java JDK version 6 or later.
Updated: June 14, 2013