Licensing Tricks
Projects that claim to be "open source" (I would say free software, though) but are "source available", i.e. non-free (linked are last commits where I found such license tricks were applied):
-
mirai, a protocol library and chat bot framework for QQ.
Licensed under AGPL with additional terms saying "no commercial use". -
QNotified, tweaks for the Android QQ client.
Licensed under AGPL with additional EULA saying "no commercial use". -
PCL, a third-party Minecraft launcher.
Not corresponding source code: only part of it is released; not giving 4 essential freedoms: "study but do not modify". -
Pikapika, a third-party client for PicACG.
Licensed under the MIT (Expat) License with additional terms in README saying "no commercial use" and "don't share it however you wish". -
SmsForwarder, an Android app forwarding imcoming SMSes elsewhere.
Licensed under the 2-Clause BSD License with additional terms in README saying "no commercial use".
It is appreciated that terms to prohibit non-free software hosting have been introduced by some code hosting services including Codeberg and NotABug, excluding GitHub.