Avoid the pirate bay, it is filled to the brim with malware torrents. Skulled users are not trustworthy either.
[torrents] rutracker.org [.org, .net, .nl] - Amazing tracker for software of any kind (ie. your favorite graphics/music/video software, including plugins for them, etc.). Torrents will be checked by staff for integrity and will show a checkmark on the torrent page.
[torrents] monkrus.ws - Your favorite cracker for your favorite software.
[torrents] rarbg.to - Allows no user uploads. Everything is automated to auto post scene releases, either through a combination of close ties to The Scene or simply re-uploads content from general/0-day private trackers, who themselves have close ties to The Scene. In either situation, it's one of the safest public trackers for software and games.
[DDL] warez-bb.org - This one is especially good for PC software. The site is down most of the time though, sadly. Has the highest number of cracked software than any other resource. For larger torrents though, it is recommended to use MOCH (multi one-click hosters) like real-debrid, or you can try the torrents first while keeping the DDL alternatives as a last resort.
[Mac] MacBB.org - Mac apps bulletin board
[Mac] macserialjunkie.com/forum (aka MSJ) - Mac apps bulletin board
[Mac] macappdownload.com (aka Macbed/Appked)
[Mac] nxmac.com - Popular DDL site for mac apps and games
[DDL] forums.mydigitallife.net
[DDL] aiowares.com
cgpeers.com (torrents, semi-private) - Graphics-related downloads and discussion - 3D/Visual Effects/Computer Graphics/Design/Computer Assisted Art. Registration opens on the 1st and 15th of every month.. User cap reached, now invite-only.
cgpersia.com (DDL, semi-private) - Semi-private DDL site. Source for video-software plugins.
audioz.download (DDL) - Source for audio software and plugins.
gfx-hub.net (DDL) - Source for graphics software and plugins.
audionews.org (torrents, semi-private) - Source for audio software and plugins. Open registration every 2nd of the month.
##► Images/installers
[Direct download] tb.rg-adguard.net/index.php - Web interface for Microsoft's techbench site. Windows 8.1+ / Office 2013+
[Direct download] Microsoft Media Creation Tool - Microsoft's tool to create Windows 10 installation media from a USB drive
[Direct download] the-eye.eu/public/MSDN - The eye - 2.7 TB back up of MSDN dump. Has lots of hard to find ISOs
[Direct download] Adobe.com CC applications - requires Adobe login.
[Direct download] Adobe CC 2018 multilanguage installers
[Mac] BrokenStones - Considered to be the best private tracker for Mac apps
[Mac] InMac - A very good Mac app tracker
TorrentLeech - One of the largest general private trackers
alpharatio.cc (Private tracker) - A general private tracker focused on scene releases. Inferior in content compared to other general trackers like IPT, TL, FL etc but has a very strong request section. Great for requests for which personalised trackers don't exist or aren't good enough. Can be joined through MAM and RED during AR's global invites period, keep an eye out
Filelist - One of the largest general private trackers. Romanian tracker, but media content will typically include dual language audio (English and Romanian).
IPTorrents - The largest general private tracker