XlsWork XLS editor for spreadsheets extension

XLSstar XLS editor for spreadsheets for Chrome and Firefox

Web browser extension that is a XLS and XLSX editor that lets you edit your spreadsheets directly on the web browser. App available in the Chrome web store and Firefox marketplace: 

 
       Enter in the Chrome extension

 
       Enter in the Firefox extension

Read more: XlsWork XLS editor for spreadsheets extension

PDFOffice PDF editor online extension for Firefox and Chrome

PDFOffice PDF editor online extension for Firefox and Chrome

PDFOffice is a PDF Editor online from which you can perform editing operations over PDF files but using your web browser. App available in the Chrome web store and Firefox marketplace: 

 
       Enter in the Chrome extension

 
       Enter in the Firefox extension

Read more: PDFOffice PDF editor online extension for Firefox and Chrome

DocsWork editor for documents DOC & DOCX extension

DocsWork editor for documents DOC & DOCX extension for Chrome and Firefox

Web browser extension that is a DOC and DOCS editor that lets you edit your WORD documents directly on the web browser. App available in the Chrome web store and Firefox marketplace: 

 
       Enter in the Chrome extension

 
       Enter in the Firefox extension

Read more: DocsWork editor for documents DOC & DOCX extension

OfficeWork Office Online extension for Firefox and Chrome

OfficeWork Office Online extension for Firefox and Chrome

OfficeWork is an office online suite that provides a Document Editor, a Presentation Editor and Spreadsheet Editor. App available in the Chrome web store and Firefox marketplace: 

 
       Enter in the Chrome extension

 
       Enter in the Firefox extension

Read more: OfficeWork Office Online extension for Firefox and Chrome