This document will point you to freeware ebook converters, with links to tutorials where available. A brief description of formats covered by each converter is detailed. This document does NOT cover formatting of documents, but rather conversion between formats.
Many popular formats are covered here, however this is not a comprehensive list.
All converters are freeware (trial, shareware and online converters not covered here)
PDF files
PrimoPDF (Windows)
Converts 300+ file types to PDF
About/Download: http://www.primopdf.com/primopdf_free_idx.htm
User manual: http://www.primopdf.com/pdfs/primopdf_UG_4-0.pdf
OpenOffice (Windows/Linux/Macintosh)
Converts TXT|DOC to PDF (with proper extension)
Forum: http://www.oooforum.org/
Download: http://download.openoffice.org/other.html#en-US
User manuals: http://documentation.openoffice.org/manuals/
Foxit PDF reader (Windows)
Converts PDF to TXT (and from that to many other formats with other software)
About/Download: http://www.foxitsoftware.com/pdf/reader/
User manual: http://www.foxitsoftware.com/support/usermanuals.php
Prince (Windows/Macintosh/Linux/Unix/FreeBSD)
Converts XML and HTML into PDF documents
About: http://www.princexml.com/
Download: http://www.princexml.com/download/
Documentation: http://www.princexml.com/doc/6.0/
Forum: http://www.princexml.com/bb/
PDF to Word Doc Converter (Windows)
Converts PDF to Word DOC
About: http://www.hellopdf.com/
Download: http://www.hellopdf.com/download.php
User Manual: http://www.hellopdf.com/tutorial.php
CutePDF Writer (Windows)
Converts virtually any Windows application file (must be able to print) to PDF
About: http://www.cutepdf.com/Products/CutePDF/writer.asp
Download: http://www.cutepdf.com/download/CuteWriter.exe
Download: http://www.cutepdf.com/download/converter.exe
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CHM files
ABC Amber CHM Merger (Windows)
Combines multiple CHM files into a single CHM file
About/Download: http://www.processtext.com/abcchmmerger.html
CHM Decoder and CHM Encoder (Windows)
Extracts files from CHM files, supports command line
About/Download Decoder: http://www.gridinsoft.com/chm.php
About/Download Encoder: http://www.freedownloadscenter.com/Web_Authoring/HTML_Text_Styling_Tools/CHM_Encoder.html
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LIT files
ABC Amber LIT Converter (Windows)
Converts LIT files to PDF|HTML|HLP|RTF|CHM|TXT(ansi/unicode)|DOC|WPD|RB|PDB|FB2
About/Download: http://www.processtext.com/abclit.html (Intro tutorial)
Supports batch conversion, program has well documented help/how to.
Convert LIT (Windows/Macintosh)
command-line and GUI versions
Converts/extracts LIT files to HTML|JPEG
About/Download: http://www.convertlit.com/
Tutorial: http://dearauthor.com/wordpress/2008/12/21/how-to-convert-an-ms-lit-file-to-html/
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PDB or PRC files
ABC Amber Palm Converter (Windows)
Converts PDB/PRC to PDF|HTML|HLP|RTF|CHM|TXT(ansi/unicode)|DOC|WPD|RB|PDB|FB2
About/Download: http://www.processtext.com/abcpalm.html (Intro tutorial)
Supports batch conversion, program has well documented help/how to.
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LRF files
ABC Amber Sony Converter (Windows)
Converts LRF to PDF|HTML|HLP|RTF|CHM|TXT(ansi/unicode)|DOC|WPD|RB|PDB|FB2
About/Download: http://www.processtext.com/abcsonylrf.html (Intro tutorial)
Supports batch conversion.
Book Designer (Windows)
Converts TXT|RTF to LRF
About/Download: http://wiki.mobileread.com/wiki/Book_Designer
DHTM editing control application that is NOT included in VISTA is required for Book Designer. The direct download for this is: http://www.microsoft.com/downloads/details.aspx?familyid=b769a4b8-48ed-41a1-8095-5a086d1937cb&displaylang=en
lrf-epub-tools
Convert LRF (Sony BeBB) files to EPUB, PDF, RTF, and HTML. Also converts PDF and DOCX to EPUB.
About: http://code.google.com/p/lrf-epub-tools/
Download: http://code.google.com/p/lrf-epub-tools/downloads/list
Forum: http://www.mobileread.com/forums/showthread.php?t=28707
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DjVu files
DjVuLibre – DjVu viewer and converter (Windows/Macintosh/Linux/Uinx/OS/2)
Converts DJVU to PDF|TIFFdoc|GRAPHICS|PS|EPS
About/Download: http://djvu.sourceforge.net/
Man Pages: http://djvu.sourceforge.net/doc/index.html
Pdf To Djvu Gui (Windows/Linux)
Converts PDF to DJVU
Howto/Download: http://www.trustfm.net/GeneralTools/SoftwarePdfToDjvuGUI.php?b2=1
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FB2 files
See calibre below, Also:
FB2_2_rtf – written in perl script to convert the fb2 to TXT | RTF
http://www.gribuser.ru/xml/fictionbook/2.0/software/fb2_to_txt-rtf.pl.zip
Fb2Any
http://gribuser.ru/xml/fictionbook/2.0/software/fb_2_any_readme.html
http://www.gribuser.ru/xml/fictionbook/2.0/software/FB2Any.exe
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MULTI FORMAT converters
Stanza (Windows/Macintosh/Universal)
Input formats PRC/MOBI/HTML/TXT/EPUB
Output formats PRC/MOBI/HTML/TXT/EPUB|PDF
About: http://www.lexcycle.com/stanza
Download: http://www.lexcycle.com/download
FAQ: http://www.lexcycle.com/faq
Forum: http://www.lexcycle.com/forum/stanza
calibre (Windows/Macintosh/Linux)
Input formats CBZ | CBR | CBC | EPUB | FB2 | HTML | LIT | MOBI | ODT | PDF | PRC | PDB | PML | RB | RTF | TXT
Output formats EPUB | FB2 | OEB | LIT | LRF | MOBI | PDB | PML | RB | PDF | TXT
About/Download: http://calibre.kovidgoyal.net/
http://calibre.kovidgoyal.net/download
User manual: http://calibre.kovidgoyal.net/user_manual/
Tips and Tricks: http://calibre.kovidgoyal.net/wiki/TipsAndTricks
Mobipocket Creator (Windows)
Input Formats: HTML&IMAGE|PDF|DOC|TXT
Output Formats: MOBI|PRC|HTML
About/Download: http://www.mobipocket.com/en/downloadSoft/ProductDetailsCreator.asp
Tutorial: http://www.mobileread.com/forums/attachment.php?attachmentid=8377&d=1198432507
eBook Publisher (Windows/Macintosh)
Download: http://www.ebooktechnologies.com/support_publisher_download.htm
Input Formats: OEB|DOC|RTF|PPT
Output Formats: IMP for ETI-1|ETI-2 and/or OEB
Tutorial: http://wiki.mobileread.com/wiki/EBook_Publisher
ReaderWorks Standard (Windows)
Input Formats: Word Documents, HTML, OeB package files, TXT(ascii) and (JPG, GIF, PNG)
Output Formats: Microsoft Reader
Download: http://www.overdrive.com/readerworks/downloads/default.asp?Download=RWSTAN
Support: http://www.overdrive.com/readerworks/support/
User manual: http://www.overdrive.com/readerworks/downloads/default.asp?Download=RWPUBUM