When reviewers look at LibreOffice and its ancestor OpenOffice.org,  they inevitably assume that it's inferior to Microsoft Office. At the very most,  they may grudgingly find it acceptable for undemanding users.
However, when you examine LibreOffice and MS Office without  assumptions, the comparison changes dramatically. That's especially true when  looking at the word processors, LibreOffice's Writer and MS Office's Word.
For one thing, features frequently have different names in Writer and  Word. Although LibreOffice and OpenOffice.org have a history of conforming to MS  Office's name-choices -- for example, in the spreadsheets, data pilots were  recently renamed pivot tables to match Excel's usage -- holdouts remain. For  example, the equivalent of Word's AutoSummary in Writer remains  AutoAbstract.
For another, features are not always in the same positions in Writer  and Word. Since Word sports a ribbon interface while LibreOffice remains with a  traditional menu, finding equivalent features is even harder than a decade ago,  because Word often buries advanced features several levels down, often in  drop-down lists.
Once you get to know Writer and Word, the differences become less  clear-cut. To a degree, Writer has always imitated Word in the hopes of being  competitive. More important, in the last few years the two have been in a mostly  unnoticed arms race, with one rarely adding another feature without the other  one copying it as soon as possible.
Far from one having an obvious advantage, in recent years the feature  lists of Writer and Word have become closer than ever.
All the same, some basic differences remain. Far from being the  underdog in every circumstance, Writer has at least twelve major advantages over  Word. Together, these advantages not only suggest a very different design  philosophy from Word, but also demonstrate that, from the perspective of an  expert user, Writer is the superior tool.
1) The  Navigator
 Word has a pane on the left side of the editing window that uses  headings as a tool for moving through a document. However, with Writer's  Navigator, you can jump back and forth in a document not just by heading styles,  but by any type of object you care to name: tables, frames, graphics, comments,  links, or anything else you care to name.
Get into the habit of naming objects instead of accepting defaults  like Table1, and the Navigator becomes even more powerful. Moreover, since the  Navigator is a floating window, you can place it anywhere on the screen, so that  it doesn't reduce the size of the editing window.
And that's not all: the Navigator can be used as a basic outliner and  as a table of contents for a master document made up smaller documents. It's a  little like KRunner or GNOME+Do -- a flexible, minimalist tool for  advanced users. The longer the document, the more powerful you'll find the  Navigator.
2) The Styles  and Formatting Window
 Another floating window, Styles and Formatting is even more powerful  than the Navigator. Opened by pressing F11, it places all of LibreOffice's five  categories of styles -- paragraphs, characters, frames, pages, and lists --  within easy reach, providing different views of each category, and allowing easy  creation and modification of styles. Much of its functionality is also available  in Word, but several layers down -- an arrangement that discourages users from  adding the elegance of styles to their workflows.
True, Word does have style previews, which Styles and Formatting  lacks. But previews are only useful for characters; for paragraphs, they would  need to show at least three lines to be useful. Besides, when you can easy apply  a style to the document directly as an experiment, then change it just as  easily, previews become redundant.
3) Page  Styles
 In Word, you can adjust all the usual page features, from margins to  the number of columns. But different page orientations and designs can only be  added as a kludge, and all paragraphs have the same  alignment.
Writer's addition of page styles gives you far more flexibility with  less effort. By careful use of the Organizer tab, you can set your document to  change page styles automatically, so that a First Page style is always followed  by a Left Page and a Left Page by a Right Page. Since headers and footers are  also attached to page style, you can also use different header and footer styles  automatically.
4) Separate  List Styles
 Although the fact is hidden, Word does allow you to create paragraph  styles that include a bullet or numbered list. In Word 2010, you can even create  a multi-level style, which was difficult in earlier  releases.
However, Writer makes list styles separate, and gains two advantages.  First, the same list style can be used by more than one paragraph style, which  reduces the number of styles to set up.
Second, because lists are a separate style category in Writer, there  is more room in the dialog window for customizing features. Among other things,  you can use a text or graphical bullet, and position the text precisely in  relation to the bullet or number. You can even use a warning sign as a large  bullet in order to add it automatically in an instruction  manual.
5) Frame Styles
 Frames are the containers for objects in a document. In Writer, they  can have styles applied to them -- a feature that is roughly paralleled in Word  for text frames, but not for other objects.
Why would you want to use frame styles? For the same reason you use  any styles: to automate your work. Instead of setting characteristics like the  border, background and text wrap around each time you insert an object -- or  finding, copying and pasting an earlier frame -- you can apply a frame style  with a single click. Frame styles are especially useful for hard-to-position  frames, like those for annotations in the margin.
6) Hierarchical Paragraph Styles
 Technically, Word paragraph styles are hierarchical. However, since  every style is based on Normal, the hierarchy is not much use when you want to  make subtle design changes quickly
Admittedly, all Writer's paragraph styles are based ultimately on the  Default style. But Writer's paragraph styles also have intermediate levels. If  you want to change all the headings in a document, instead of editing styles  Heading1 through Heading10, you only need to change the Heading style. The same  arrangement applies to the styles used for indexes and tables of  contents.
7) WYSISYG Headers and Footers
 In the last few releases, headers and footers have become  significantly less awkward in Word. Using multiple header and footer layouts in  particular has become much easier.
Unfortunately, though, headers and footers in Word continue to be  restrained by limited designs that divide the space into several columns and  that use partly hidden features and labeled diagrams for editing. As a result,  in Word you still get only an approximation of what the edited results are like  as you edit.
Unlike Word, Writer shows headers and footers very chose to how they  will print, with more options. It also ties them to page styles, making them  easier to find than in Word.
Writer also gives you more control. Where Word only allows users to  set the distance between the header or footer and page edge, Writer also lets  you choose the distance from the text and the distance from the left and right  margins and choices about how to set the height of headers and  footers.
The type and position of any lines in the header or footer can also  be modified, as well as the header and footer paragraph styles. Everything about  headers and foots is handled more simply and in more detail than in  Word.
8) Custom Properties
 Individual users often ignore document properties. However, in  corporate settings, details such as who wrote the document – and security to  control who can do what with a document – can be important. Those who publish  online or on an intranet are also concerned with keywords, which can help  searchers to locate a document.
However, only Writer includes the ability to add properties. You  could, for instance, add fields for an artist or an editor who worked on a  document. These fields could then be used where appropriate in the document,  instead of typing the names each time.
Should the names changed or need to be updated, you can do so once  under custom properties instead of going through the document making manual  changes. In this way, custom properties are much like  styles.
9) Paragraph by Paragraph Hyphenation
 How a document is hyphenated strongly affects its final appearance.  Word treats hyphenation strictly on the document level. You can hyphenate  manually, making decisions for yourself, or automatically. For automatic  hyphenation, you can choose to limit the number of consecutive hyphens at the  end of lines, and the "hyphenation zone"or the space in which hyphenation may  occur at the end of the line.
In Writer, hyphenation is a feature of paragraph styles. This  orientation has the advantage of letting you adjust hyphenation according to the  format, letting it be looser on a line with a ragged right alignment, or tighter  on a line with a justified alignment.
Just as important, instead of using the ambiguous concept of a  "hyphenation zone," Writer lets you adjust hyphenation in the much more  meaningful unit of characters at the end and start of a line. Writer does  include a document hyphenation tool as well, but that is mostly a finishing  touch, like spell checking to clean up what the paragraph settings have been  unable to handle as you've rearranged text.
10) Improved Table of Contents Options
 Word generates tables of contents quickly, using existing templates.  However, the result is uneditable, and invariably runs leader dots between the  title and page number -- a sure sign of failed design to any  typographer.
Writer provides a far wider arrange of possibilities. You can adjust  the position of all the components of a table of contents entry, or whether they  appear at all. Each level of the table includes its own editable paragraph  style, and, while Writer, like Word, assumes you will use heading styles to  create entries, you can also manually enter other markers as  well.
The result is a far richer set of design options than in Word, a set  that is far more easily updated.
11) Advanced PDF Options
 Both Writer and Word support saving a file as PDF. However, Word  provides only basic options. Either you can choose to produce a minimal sized or  print quality PDF, or you can chose from a handful of options, such as page  range, and whether to create bookmarks or password protect the  PDF.
As free software often does, Writer's Export to PDF provides an  exhaustive set of options for those who want them. Instead of Word's vague  options for quality, Writer lets you set the image quality and  resolution.
Similarly, you can decide exactly how links in the original are  handled and exactly what is password protected. In addition, it lets you set the  details of the initial view for the PDF and the window in which it displays.  Short of going to Acrobat itself, you won't find a more complete set of options  for PDF creation.
12) Stability, Long Documents, and Recovery
 MS Office 2010 is generally credited with having the reputation of  being far more stable than earlier releases. However, a service pack has been  released, and stability remains a relative concept.
Rearranging material can still leave a document in hopeless  confusion, and, in general, the use of word should be confined either to  documents that contain only text and are under about thirty pages, and documents  with graphics, tables, and other objects of under twenty  pages.
The verdict is also out on whether master documents in Word are  reliable -- mainly, from what I can figure, because experienced users have  developed such a phobia about master documents corrupting their files that they  never use them.
The situation in Writer is much different. From first-hand  experience, I can say that two gigabytes of RAM is enough for tolerable  performance while editing documents of up to five hundred pages without  documents. And while I have had master documents (and one or two other large  files) crash LibreOffice, I have always recovered them without them being  corrupted, and almost always without a recurrence.
The main reason for crashes in LibreOffice appears to be system  memory. With sixteen gigabytes of RAM, Writer has yet to crash any document that  I have opened -- something that I can't say about Word.
The Difference in the Design
 These twelve features are not cherry-picked. Rather, they are a  result of going through the menus item by item, ignoring cosmetic differences  and concentrating on the major functional ones.
To be fair, you could make a similar (if probably shorter) list of  Word's advantages that would include superior outlining and cross-reference  systems, as well as grammar checking. Word also comes with a larger selection of  templates, although a few dozen downloads of Writer templates would soon remedy  that.
Moreover, the discussion could be complicated immensely by  considering all the available add-ons. For instance, as Word installs, it lacks  Writer's hidden sections and paragraphs, offering only the much more cumbersome  hidden text. With an add-on, it achieves parity.
In the same way, LibreOffice's extension PDF Import gives it an  ability utterly lacking in Word. However, since many users are unaware of these  extras, I have left them out for simplicity's sake.
However, when all these considerations are taken into account, what  is striking is not just that Writer more than holds its own, but the pattern  that its advantages fall into.
Features like the Navigator emphasize that Writer is a mid-level  desktop publishing app as much as a word processor. In fact, as I proved to  myself years ago, LibreOffice makes a more than adequatesubstitute for FrameMaker, which is intended  for long, text-oriented documents.
Further proof of Writer's design is its emphasis on styles, and its  ability to fine-tune features whose defaults a Word user often has no choice  except to accept. The closer you look, the more Writer seems designed for those  who frequently write documents of over twenty pages, and who want the option  sometimes to control layout closely, sometimes down to the last  millimeter.
By contrast, Word's design favors shorter documents, and users who  are less concerned with layout and exactness than getting a task done with a  minimum of distraction.
Moreover, while a bit of preparation can make Writer suitable for  light users, little can be done to make Word suitable for more demanding  users.
Really, the superficial conventional wisdom has the wrong view  entirely. It's not LibreOffice Writer that needs to catch up to MS Word. From an  expert's perspective, it's frequently MS Word that needs to catch up by  LibreOffice Writer.