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Phần mềm mà Demen giới thiệu gọi là OpenOffice. Đã có cty sử dụng phần mềm này. Tuy nhiên nó cũng có một số hạn chế so với MS Office. Dưới đây là phần so sánh giữa OpenOffice 2.0 và MS Office 2003:

Word 2003 features and benefits that Writer doesn't have:

1. Grammar checking. Though there's some talk about the shortcomings of Word's grammar checker, it seems to find our mistakes far more often than we find its mistakes. Writer does not come with a grammar checker, though a plug-in, LanguageTool, is available. LanguageTool, an independent open-source project, is an impressive accomplishment, but its usefulness does not come close to approaching the resources built into Word.
2. Support of Word Macros. Automation fans can make extensive use of Word macros (sequences of commands that can be recorded and played back later). Some users depend on macros in order to work efficiently, while others have never heard of them. Writer does not support Word macros.
3. Advanced Features. According to PCMag.com, Word supports online collaboration, Smart Tags, highly flexible outlining, smart table formatting, and a research task pane. Writer doesn't. PCMag also reports that Word is better than Writer at finding (and replacing) special characters, like dashes. It's important to remember the potential for downside in Word's (and Excel's and PowerPoint's) features: if you aren't careful, all of your edits and personal metadata can be made available to anyone with whom you share your documents.
4. Animated Text. Word can create animated text. Writer can't. (Some might view this as a point in Writer's favor.)

Writer features and benefits that Word 2003 doesn't have:

1. Creating PDFs. Writer has built in support for exporting documents as PDF (Acrobat format), a useful resource. In the current release of Word, you need a third-party application like Adobe Acrobat or the open-source PDFCreator. (Microsoft has announced that it plans to include this feature in the upcoming Office 2007.)
2. Simplicity. For those who feel that Word is overly complex, Writer offers all the basic and mid-level functions in an environment which feels familiar but simplified.
3. HTML Production. HTML purists tend to favor Writer's markup to Word's, though few people with knowledge of HTML use either editor in producing web pages. For simple tasks, theWeb Wizard makes it incredibly easy to produce pages with HTML, PDF, and images.
4. Writer Macros. Writer has it's own macro and scripting feature that organizes your macros in a tree-structured display.
5. Usability of Find-and-Replace. According to PCMag.com, $quot;Advanced find-and-replace operations (such as those involving fonts and attributes like italics) are easier to manage in Writer than in Word's confusing Find dialog.$quot;
6. File Size. Writer's native format generally creates smaller files than Microsoft Word's.

Spreadsheets

Excel 2003 features and benefits that Calc doesn't have:

1. Support of Excel Macros and Pivot Tables. As with Word users, Excel users often make extensive use of macros. Calc does not support Excel macros. A similar situation applies to Excel's use of Pivot Tables; there's no support for Excel Pivot Tables in Calc. Calc offers its own pivot-table-like feature called Data Pilot, as well as its own macro functionality, but Excel users will not be able to port this kind of data into Calc or open the data created in Calc.
2. Support of Excel Charts and Graphs. There are reports that Calc has trouble translating some Excel-generated charts and graphs.

Calc features and benefits that Excel 2003 doesn't have:

1. Creating PDFs. Calc, like Writer, has native support for exporting documents as PDF (Acrobat format).
2. Interface Details. PCMag.com found $quot;Calc's menus and dialogs easier to navigate than the corresponding dialogs in Excel.$quot;

Email Clients

Outlook 2003 features and benefits that Thunderbird doesn't have:

1. Integration with a Calendar. For many of us, it makes sense to combine an email client with a calendar application and a to do list, and Outlook does it well. There's a reason that Outlook is many people's tool of choice.
2. Spell and Grammer checking. Integration with Word leverages Microsoft's spelling- and grammar-checking prowess.

Thunderbird features and benefits that Outlook 2003 doesn't have:

1. Keyword Searching. Thurderbird's search is much better than Outlook's, although the oft-overlooked Lookout, a Microsoft acquisition, ably addresses this Outlook deficiency.
2. RSS Support. Thunderbird has native support for RSS. To get RSS feeds in Outlook 2003, you can use one of the great, free, open-source services like RSSFwd.
3. Plain-Text Email. Thunderbird makes it easy to send and receive plain text. If you want to ensure that you receive all your email in plain text format through Outlook, you'll have to edit your registry.

Calendars

Outlook 2003 features and benefits that Sunbird doesn't have:

1. Shared Calendaring. Exchange may not be a joy to administer, but once you've worked in an office where sharing calendars, meeting invitations, and contacts is as simple as the Exchange/Outlook combination makes it, you will never want to be without this ability. There is not currently a Windows-based, open-source program that offers the groupware features available to staff members whose employers offer Exchange/Outlook.
2. Palm Integration. Outlook 2003 easily synchs with Palm calendars.
3. Stability and Ease of Use. As discussed above, Outlook is stable and easy to use, while Sunbird is not as mature.

Sunbird features and benefits that Outlook 2003 doesn't have:

1. iCal Support. Native support for the open iCal format, meaning you can access your calendar or exchange appointments via email with any of the dozens of software packages that support iCal.

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