N Docs allow you to view documents on Android. No internet connection is required.
* Supported file formats
– Microsoft Word(DOC/DOCX, don’t support password protected file)
– Microsoft Excel(XLS/XLSX, don’t support password protected file)
– Microsoft PowerPoint(PPT/PPTX, don’t support password protected file)
– Open/Libre Writer(ODT, Open with thirdparty app)
– Open/Libre Calc(ODS, Open with thirdparty app)
– Open/Libre Impress(ODP, Open with thirdparty app)
– Hancom Hanword(Open with thirdparty app)
– Hancom Hancell(Open with thirdparty app)
– Hancom Hanshow(Open with thirdparty app)
– Portable Document Format(PDF, support password protected file)
– RTF
– TXT
– CSV
– MARKUP(MD/HTML/XHTML/XML/DTD/XSL/XSLT…)
– CODE(JAVA/CPP/PHP…)
– EBOOK(EPUB)
…
* Creatable file formats:
– PDF
– TXT
– HTML
…
* Editable file formats:
– TXT
– MARKUP(MD/HTML/XHTML/XML/DTD/XSL/XSLT…)
– CODE(JAVA/CPP/PHP…)
…
* Document Search
– Support all of the file formats except PDF format.
– PDF will be supported.
* Available cloud services
– Google Drive
– Microsoft One Drive
– Box