There are not so many differences in functionality and even user interface between OpenOffice and MS Office product.
Features of the software
OpenOffice Writer / Text documents
Create and edit text documents in the following formats: DOC, DOT, ODT, OTT, SXW, STW, TXT, HTM and HTML.
Processing of the text, spreadsheet, graphics, and field codes.
Insert page breaks, margins, special characters, character formatting, partition, hyperlinks, images, audio, video, cross-references, bookmarks, scripts, footnotes, tables of contents and signs, frames, tables, formulas, OLE objects and other data in a text document.
Change the style and background pages, tables or text.
Support for text and graphics animation.
OpenOffice Calc / Spreadsheet
Creating and Editing files with spreadsheets in the following formats: ODS, OTS, SXC, STC, XLS, XLC, XLM, XLW, XLT, CSV and TXT.
Export tables from the database.
Create several sheets in a single document.
Setting the format for table's cells.
Add notes to the cells.
Adding / deleting cells, columns and rows of the table.
Support for Functions Wizard for solving mathematical expressions.
Creating and Editing pivot tables.
OpenOffice Impress / Presentations
Create and Edit PowerPoint presentation: ODP, OTP, SXI, STI, PPT, PPS, POT and SXD.
Support for various layouts.
Support for different modes for editing presentations (normal mode, drawing mode, structure, abstracts, notes, and Slide Sorter).
Chage the design for a certain slide or for the whole document.
Create and edit the style for text.
Insert multimedia files, special effects, charts, bar charts and tables.
OpenOffice Base / Databases
Develop a database in ODB format, using tables, queries, forms and reports, usefull for other programs. The OpenOffice Base supports SQL-database. However, to SQL database requires JAVA platform. Databases can be created manually or with the help of special master.
OpenOffice Draw / Images
Creating and processing images in the following formats: ODG, OTG, SXD, STD, DXF, EMF and others.
Drawing pictures, using such tools as shading, shadow, line sizes, etc.
Insert new layers and slides.
Change the page orientation (portrait / landscape).
Insert special effects, shapes, symbols, diagrams, callouts, text, arrows, curves, lines, images, audio, video, spreadsheets, the OLE objects, formulas, add-on modules, files, charts, hyperlinks, frames and notes.
Crop images indicating the scale and size for image.
Support for editors of the sensory image.
Convert the object to a curve, polygon, path, bitmap, metafile, or 3D-object.
OpenOffice Math / Mathematical formulas
Loading and saving formulas in ODF, SXM and MML formats.