Piero Scaruffi's knowledge base: Massive music database.
AlternativeTo: Alternatives to software and apps.
Audius: Streaming platform like SoundCloud but better.
PCGamingWiki: Aims to list fixes and workarounds for every single PC game.
Wikispooks: An encyclopedia of deep politics.
Johto Redrawn: A group of artists re-imagining the Pokémon World.
Living Worlds: Beautiful dynamic pixel art scenes by LucasArts' artist Mark Ferrari
KOTORINOSU: My favorite Room Escape game series.
Free software that I really love and is much better than most (if not all) paid alternatives. Besides functionality and features, I lean towards software that is fast, light-weight, customizable, non-discontinued, easy-to-use, privacy-oriented, open-source and, in some cases, portable.
BleachBit: Deletes unnecessary files, a good complement to CCleaner.
Everything: Unlike Windows search, it searches every file and folder on your pc.
MediaHuman Audio Converter: Easy-to-use audio converter.
qBittorrent: Lightweight and open source torrent client. Without adware unlike µTorrent.
ShareX: Easily capture or record any area of your screen.
SpeedCrunch: Fast and very customizable calculator.
TurboTop: Makes any window 'Always on Top'. Discontinued but still works.
Waifu2x-Extension-GUI: High-quality image and video enlargement based on the Waifu2X algorithm.
XnConvert: Fast batch image converter with actions and supports more than 400 file formats.
XnView MP: Image viewer with many basic editing options.
Transcriptions and arrangements that I made on request.