Solaris - The Official Stanislaw Lem Site - Biographical information, critical reviews, drawings, a gallery of covers, a gallery of illustrations by Daniel Mroz, essays, short stories, bibliography. - http://www.lem.pl/cyberiadinfo/english/main.htm
The Problem of Communication - An article about the ideas in Stanislaw Lem's science fiction. - http://uweb.superlink.net/neptune/Lem.html
The Futurological Congress and the Future of Illusion - Stanislaw Lem foresaw the coming of the age of simulation in which humanity would lose itself in a world of illusions. - http://www.transparencynow.com/introlem2.htm
Mind's Eye I: Solaris - Review of the book with explanations concerning its plot. - http://www.strangewords.com/archive/solaris.html
Danny Yee's Book Reviews: Stanislaw Lem - Reviews of The Futurological Congress and Peter Swirski's A Stanislaw Lem Reader. - http://dannyreviews.com/a/Stanislaw_Lem.html
Study Guide for Stanislaw Lem: Solaris - A quite comprehensive discussion of Solaris, Lem's most famous book, chapter by chapter. - http://www.wsu.edu:8080/~brians/science_fiction/solaris.html
Bibliography. - List of books with short description and links. - http://www.rpi.edu/~sofkam/lem/index.html
Dialogs - A complete online text of the first dialog from Lem's work, translated by Dr. Frank Prengel. - http://www.frankpr.net/Lem/Dialogs/dialogs.htm
Vitrifax - One of the best unofficial sites dedicated to Stanislaw Lem and his works with a "personal touch". Reviews, Lem's short stories and essays. - http://world.std.com/~mmcirvin/vitrifax.html
Summa Technologiae - Online text of a partially complete translation (by Dr. Frank Pengel) of Lem's book. - http://www.frankpr.net/Lem/Summa/contents.htm
Stanislaw Lem - Biographical and bibliographical information on the author. - http://www.kirjasto.sci.fi/slem.htm
The Futurological Congress - Review of "The Futurological Congress" by Steven H Silver. - http://www.sfsite.com/~silverag/lem.html