This is a list of recommendations for a light-weight, non-KDE, Qt-only desktop environment.

Main Gentoo repository (Portage tree)

Text and office apps

app-editors/focuswriter - fullscreen and distraction-free word processor

app-editors/juffed - tabbed text editor with syntax highlighting

app-editors/notepadqq - text editor similar to Notepad++

app-editors/tea - small, lightweight text editor

app-editors/qxmledit - Qt XML editor

app-office/lyx - frontend for LaTeX, DocBook, etc.

app-office/scribus - desktop publishing and layout program

app-office/texmaker - frontend for LaTeX

app-office/texstudio - Free cross-platform LaTeX editor (fork from texmakerX)

app-text/calibre - ebook management

app-text/coolreader - ebook reader

app-text/fbreader - ebook reader

app-text/goldendict - dictionary lookup program

app-text/kchmviewer - feature rich chm file viewer

app-text/qpdfview - tabbed PDF viewer

Multimedia

media-gfx/nomacs - image viewer

media-gfx/photoqt - Simple but powerful Qt-based image viewer

media-gfx/phototonic - image viewer

media-sound/audacious - audio player

media-sound/bempc - Music Player Daemon client with experimental UI

media-sound/cantata - featureful Music Player Daemon client

media-sound/clementine - modern music player and library organizer

media-sound/coquillo - audio tagger

media-sound/flacon - extracts audio tracks from audio CD image to separate tracks

media-sound/qastools - ALSA mixer GUI

media-sound/qmmp - Audio player with Winamp/XMMS skins support

media-sound/quimup - Music Player Daemon client with cover art display

media-video/avidemux - video editor/transcoder

media-video/baka-mplayer - libmpv-based media player

media-video/minitube - YouTube client

media-video/smplayer - great MPlayer/mpv frontend

media-video/vlc - media player

Network apps

mail-client/trojita - IMAP e-mail client

net-dialup/cutecom - serial terminal

net-im/psi - instant messenger

net-im/vacuum - Jabber client

net-irc/kvirc - Advanced IRC Client

net-misc/fatrat - download/upload manager

net-news/quiterss - RSS/Atom feed reader

net-news/rssguard - RSS/Atom feed reader

net-p2p/qbittorrent - BitTorrent client

net-p2p/transmission - BitTorrent client

net-wireless/wpa_supplicant - Wi-Fi front and back end (see also wpa_supplicant)

www-client/falkon - Web browser

www-client/otter - Web browser

www-client/qupzilla - Web browser

www-client/qutebrowser - Web browser

Desktop utilities

app-admin/keepassxc - password manager

sci-calculators/speedcrunch - calculator

sys-apps/qdirstat - Qt application analyzing disk space allocation

x11-apps/copyq - clipboard manager with advanced features

x11-misc/qlipper - clipboard history applet

x11-misc/qps - process manager

x11-misc/qxkb - keyboard layout switcher

x11-terms/qterminal - multitab terminal emulator

x11-misc/qtfm - lightweight file manager

Desktop environment

lxqt-base/lxqt-meta - lightweight desktop environment (see also LXQt)

Other

app-misc/anki - flash card program for learning purposes

To be added