Found one file extension association related to Opal and 1 file format developed specifically for use with Opal.
Platform, operating system: Apple macOS / Mac OS X
Go to: Opal description
Developer: A Sharp, LLC.
Developer / company: A Sharp, LLC.
Opal lets you organize just about anything — ideas, reports, lists, notes, projects, graphics — in the form of an outline.
Opal’s elegant, uncluttered interface stays out of your way so you can capture notes efficiently. You’re free to organize — and reorganize — however you like. You can always find information later, using fast filtering or Spotlight. Or keep it out of your way by shrinking long topics or focusing on part of a document. Prioritize lists with flexible sorting. Track projects with smart checkboxes. Multiple selection lets you work faster. Streamlined and responsive, Opal is truly your digital notepad.
Opal will be familiar to anyone who ever used the popular and reliable Acta outliner. However, it’s completely rewritten for Mac OS X.
size: 128px x 128px (.png with transparency)
Note: You can click on any file extension link from the list below, to view its detailed information. The list of extensions used or otherwise associated with the application may not be complete, because many common file extensions on our website, such as jpg (pictures) or txt (text files), can be opened by a large number of applications, or are too general file format. However most, if not all directly associated file extensions should be listed with its appropriate program. Although its likely, that some file extensions may be missing from the list of associated file extensions with the application, yet they can be opened, be part of, or otherwise be associated with the program.
Opal default file extension associations
Comparison table of actions that Opal can perform with its associated file type beta
This table might not contain all possible associated or supported file types or may contain incorrect data.
If you need more information please contact the developers of Opal (A Sharp, LLC.), or check out their product website.
File type \ Action