最近的研究<ref>{{cite web|url = http://www.MolecularAssembler.com/KSRM/5.1.htm | date = 2004 | accessdate = 29 June 2013 | last = Freitas | first = Robert | last2 = Merkle | first2 = Ralph | title = Kinematic Self-Replicating Machines - General Taxonomy of Replicators}}</ref>已经开始对replicators进行分类,通常基于它们所需要的支持程度。
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最近的研究<ref>{{cite web|url = http://www.MolecularAssembler.com/KSRM/5.1.htm | date = 2004 | accessdate = 29 June 2013 | last = Freitas | first = Robert | last2 = Merkle | first2 = Ralph | title = Kinematic Self-Replicating Machines - General Taxonomy of Replicators}}</ref>已经开始对'''复制因子replicators'''进行分类,通常基于它们所需要的支持程度。