History
Since the early 1990s, the Acrobat product has had several competitors, some of which used their own document formats, such as:
- AnyView from Binar Graphics company
- Common Ground from No Hands Software company
- Envoy from WordPerfect Corporation
- Folio from NextPage company
- Replica from Farallon Computing company
- WorldView from Interleaf company
- DjVu from AT&T Laboratories/DjVu Project/LizardTech/Varolmak/Caminova
By the late 1990s PDF had become the de facto standard. This has resulted in the development of both free and commercial programs that create or manipulate PDF. Adobe also allows Acrobat plug-ins to be developed by third parties, which can add extra functions to the Acrobat program.
Read more about this topic: Adobe Acrobat
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