0.1, 18 June 1999, first draft
0.2, 10 September 1999, changed <htmlurl ... > tag to <url ...>, another motto, added appendix B about MP3 player, created and added eco_com mailing list, added chapter about alternative power supplies, added recommendations for buying a new computer, improved screensaver section, added UPS chapter, added chapter about hardware design, minor changes
0.3, 17 September 1999, added information about Tierra, added information about wasting of resources during computer production, added some comments about UPS, minor changes
0.4, 05 December 1999, added appendix G about other operating systems, added information about CD recycling, added appendix H URLs of recyclers, removed link to Linux Games Survey, added links to SWARM, UNCERT and Climate-Dynamics, added chapter about Energy Star label (courtesy of Robert Horn), minor changes
0.5, 04 January 2000, some additional information about PostScript utilities, new chapter Caveats, URL corrections and minor changes
0.6, 01 March 2000, link to Japanese translation added and some spell checking (thanks to Jun Morimoto), correction of URLs
0.7, 14 April 2000, new chapter about double sided printing, some links added to the Games chapter, Power Management Unit - PMU section added, proposition of Chinese translation
0.8, 4 November 2000, some more hints on using small space and small memory added, new chapter about Linux applications for old hardware, some more hints how to save paper included, proposal of Portuguese translation, links updated, new document URL, minor changes
0.9, 27 February 2003, some links corrected (TuxMobil.org, tldp.org), minor changes
0.10, 22 November 2003, conversion to XML, some remarks about the ecological comparison between laptops and desktops were added, minor changes
0.11, 23 March 2004, conversion to XML, some remarks about the ecological comparison between laptops and desktops were added, minor changes
0.12, 27 July 2005, Added a chapter about "Installing Linux on Older Hardware", bumped to DocBook 4.2, minor changes.
0.13, 9 February 2006, All URLs have been checked and some minor changes were made.
0.14, 12 March 2006, A link to ledcontrol has been added and some minor changes were made.
0.15, 11 May 2006, Many updates, hyperlinks to existing resources and additions by Michael Opdenacker (Free Electrons). Most added ideas and resources come from the embedded Linux system development community.
0.16, 24 October 2006, Some link and spell checking has been done.
0.17, 30 May 2007, A short description of Intel's LinuxPowerTop project has been added to the Powermanagement section, the Nuke Anything Enhanced FireFox extension and kprinter are now mentioned in the Printer section, some minor enhancements have been done and all URLs have been checked.
0.18, 19 June 2007, A new chapter about using spare CPU cycles has been added, the Green Linux initiative of the Linux Foundation has been mentioned, and the abstract has been made more precise.
0.19, 22 June 2007, Some information about energy-efficient products and standards has been added.
0.20, 28 September 2009, All URLs have been checked, and many minor enhancements have been made.