Reactor (magazine)
online science fiction magazine
Reactor, formerly Tor.com, is an online science fiction and fantasy magazine published by Tor Books, a division of Macmillan Publishers. The magazine publishes articles, reviews, original short fiction, re-reads and commentary on speculative fiction. Unlike traditional print magazines such as Asimov's or Analog, it releases online fiction that can be read free of charge.
Reactor was founded (as Tor.com) in July 2008 and renamed Reactor on January 23, 2024.
Reception
Gardner Dozois called Tor.com "one of the coolest and most eclectic genre-oriented sites on the Internet". He felt in 2011 that its short fiction output that year was weaker than usual, but said it was still a fascinating place to visit. In 2014, The Guardian's Damien Walter remarked on a "digital renaissance" in short SF, and cited a new generation of online magazines, including Lightspeed, Strange Horizons, Tor.com and Escape Pod, as having transformed the genre. Of these, he described Tor.com as "the reigning champion of science-fiction magazines". He noted the broad range of its output, and said that it had published "many of the most exciting new talents" such as Maria Dahvana Headley and Karin Tidbeck.
Awards
Tor.com has won eight Locus Awards for Best Magazine (2015, 2017–23), breaking a 40-year-long streak where the category was only won by Asimov's and F&SF (in addition to Locus itself).
“Reactor (magazine)” enters the record as online science fiction magazine. Crown Archives preserves that source wording while asking what Reactor, magazine and online can confirm, complicate or overturn.
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Named sources, stable identifiers and responsible institutions provide the strongest route from overview to verifiable evidence. The source revision retrieved here is dated Dec 15, 2025. The linked authority identifier is Q18353448. 3 of 3 selected statements include explicit references; 2 carry qualifiers and 0 use preferred rank. The first chronological checks are 2008, 2024, 2011 and 2014.
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This entry incorporates text from “Reactor (magazine)” on English Wikipedia. Contributors are listed in the page history. Text is available under the Creative Commons Attribution-ShareAlike 4.0 License. Selected authority identifiers and statements are retrieved from Wikidata under CC0; their references and qualifiers remain part of the verification path.