Financial

• CBB -- Money Management for Unix
  The X alternative to Quicken & MS Money
• Moneydance
  Personal finance manager written completely in Java

Office Suites

• Applixware for Linux
  Commercial office suite
• The Andrew User Interface System
  Multimedia word processor, E-mail software, etc. for X
• Cliq for Linux
  Commercial office suite
• KOffice
  Free office suite for KDE
• Siag
  Word processor, spreadsheet, and presentation graphics
• StarOffice
  Office suite, free for private use
• Yoga
  "...is the GNU replacement for Lotus Notes." An in-progress project

PIMs, Calendars, Planners

• Addressbook
  Address, phone number, and e-mail address manager for X
• KOrganizer
  Calendar and scheduling program for KDE
• plan
  Schedule planner based on X/Motif

Word Processors, Document Viewers, Converters

• AbiWord
  Open source word processor. So far, an early developer release.
• Adobe Acrobat Reader
  Views Adobe *.pdf files
• Ciceros
  Tcl/Tk word processor for Linux/X
• Corel WordPerfect for Linux
  The popular commercial word processor; You can download a 15 day evaluation copy from here
• Ghostscript, Ghostview, and GSview
  PostScript viewers, documentation, and links
• Thot
  WYSIWYG tructured document editor for X
• xpdf
  A PDF viewer for X