Package specification or "spec file" for an Ada programming project; contains definitions and declarations referenced by an Ada body (.ADB) file; typically has the same filename as the corresponding ADB file except for the extension.
Program(s) that open ads files
Mac: Any text editor Windows: Any text editor
Unix: gcc; gnat; Any text editor
Information from FileInfo.com - The File Extensions Resource.
http://www.fileinfo.com/extension/ads
