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C-Source Code

Prism   prism-1.6.tar.gz  (230 kb)  - Rule based logical decisions on dynamic sequences in such applications as text scanning, audio filtering, and visual image identification.

Ups-C   upsc-0.4b.tar.gz  (546kb) 2022/8/22  - OPS-5 production system written in the C-language.

Sm   sm-1.0.tar.gz  (10 kb)  - Aho-Corasick implementation in the C-language.

Lisp Interpreters (C-code)

Mlisp   mlisp-0.7i.tar.gz   (729 kb)  2024/6/9   - A developmental lisp interpreter.

Nlisp   nlisp-0.4d8.tar.gz   (137 kb)  2023/12/13   - Another developmental lisp featuring a reference-counting garbage collector.

Nlisp    nlisp-0.3v.tar.gz    (94 kb)   - A plain lisp without a bytecode compiler.
Rtlisp    rtlisp-0.6e.tar.gz    (257 kb)   - No working garbage collector.

Lisp Production Systems

Ups   ups-0.2r4.tar.gz   (175 kb)  2024/3/25   - An OPS-5 production system from Charles Forgy's Lisp source code.