Public PreDB`s (01.01.2019)
 
ALL: 
https://predb.me/
http://pre.corrupt-net.org/
http://predb.org/
https://predb.pw/
https://pre.fyp.nl/
https://predb.ovh/
http://m2v.ru/ 
https://www.d00per.com/dupe
https://www.srrdb.com/ or https://www.srrxxx.com/
http://pre.c-burns.co.uk/pre.php
 
Mp3 & FLAC:
http://nfodb.net.ru/ or http://nfodb.ru/
https://predb.eu/
 
Music Production Software / Audio Warez:
http://www.audiop2p.com/pre.php
http://audio-museum.com/Main_Menu.htm
 
German:
http://www.xrel.to/
http://www.xrel.to/releases.html (Scene Only)
http://www.xrel.to/p2p/releases.html (P2P Only)
http://nfo.nydus.org/ or http://nfo.raidrush.org/
https://www.ngp.re
 
French:
http://www.dupefr.com/  => Account needed / very good pre :-)
https://tryzonet.xyz/

Nordic:
https://swetracker.org/v2/releases
 
Console:
https://romtohome.com/
http://www.abgx.net/index.php
http://rom-news.org/
http://xbins.org/ (xBox homebrew release notes)
http://renascene.com/
https://releaselister.info/de/
http://www.logic-sunrise.com/
http://3dsdb.com/
http://nswdb.com/
http://csdb.dk/
http://www.ds-scene.net/?s=releases

P2P:
xrel.to/p2p/releases.html (P2P Only/German)
http://pre.c-burns.co.uk/p2ptrace.php
 
Crawler:
http://extremedownload.org/

With DL:
https://scene-rls.net/releases/index.php
https://1gabba.pw/

Outdated but still online:
http://www.nfohump.com/ (outdated)
http://nfodb.com/ (outdated)
http://www.mp3scene.info/ (outdated)
http://sceneforce.com/ (outdated)
http://blackside.free.fr/ (MVids/outdated)
http://www.dvdrfixes.com/index.php (DVDrRls-Fixes/outdated)
http://oodupecheckoo.blogspot.de/ (outdated)
http://dupecheck.atspace.com/ (outdated)
 
Other:
https://scenerules.org/
http://scenenotice.org/
http://scenegrouplist.com/index.php
http://www.defacto2.net/welcome
http://nuke.sipsik.net/ (Nukes...)
http://rescene.wikidot.com/scene-databases/ (PreDB Backups)
https://opentrackers.org/links/warez-scene/#rlsdb
https://archive.org/details/NFO_Collection_2000-2004_Compilation
https://archive.org/download/nfo_large_collection_2009_2012
https://archive.org/details/warez-scene-notices-2006-2010 (Scene Notice Collection 2006-2010)
 
Greets,
Ripdevil