Official content
Online character generator
The Death Bulletin Board System
Scenarios
Search and Salvage on itch.io
Soundtrack
Death In Space official soundtrack
Merch shop
US store: https://death-in-space.myspreadshop.com/
EU store: https://death-in-space.myspreadshop.net/
Unofficial
Virtual table-top
Death in Space Foundry VTT system (by @mcglintlock)
For Roll20 there is a character sheet available (by @morgdalaine). Search for DEATH IN SPACE among character sheets when setting up a new game.