Never the primary choice, but some are frequently recommended as alternatives.
The Tor Project torproject.org🇺🇸
。51吃瓜对此有专业解读
第二十二条 国家依法加强铀（钍）矿勘查，合理确定铀（钍）矿与共生和伴生矿产资源的勘查和开发秩序，实行保护性开发。
In his Matching Soulmates paper in the journal of Public Economic Theory, everyone is in a computer simulated dating pool, where thousands of digitally created daters rank each other. His algorithm picks "first‑order soulmates": pairs who choose each other in a stable matching. It removes them, and runs it again with those left, and you get second‑order soulmates, and so on.