X-Risks is a sourcebook and creature catalog for Eclipse Phase. It details the dangers facing transhumanity:

Over 60 creature and machine descriptions, classified by challenge level.
Information on extinction threats, from AIs and aliens to nanoplagues and wormholes.
Coverage of the TITANs, exhumans, exsurgent virus, Factors, and other hostiles.
New exsurgent virus strains, psi sleights, and xenofungi.
Traps for high-tech dungeon crawls.

X-Risks is a 192-page PDF (with layers, a hyperlinked table of contents, a hyperlinked index, and internal hyperlinks) and is Creative Commons (BY-NC-SA) licensed.

Eclipse Phase Second Edition Compatibility:

This title that was released for the First Edition of Eclipse Phase. It contains mostly setting material that is compatible with the upcoming Eclipse Phase Second Edition, but some material will need to be converted to use with it, most notably the creature and machine stats.