yid
yid (Yacc Is Dead) is a parser generator based on Brzozowski's derivative from regular expressions to context-free grammars.

Homepage: https://github.com/sellout/YACC-is-dead

License: ???

More information:

Quick assessment (2023-03-25)

(PARSE SX-LIST SXIN :COMPACT #'COMPACT)
took 28,000 microseconds (0.028000 seconds) to run.
During that period, and with 4 available CPU cores,
          0 microseconds (0.000000 seconds) were spent in user mode
          0 microseconds (0.000000 seconds) were spent in system mode
 117,696 bytes of memory allocated.
(RECOGNIZESP S GOOD-INPUT)
took 19,254,000 microseconds (19.254000 seconds) to run.
        187,406 microseconds ( 0.187406 seconds, 0.97%) of which was spent in GC.
During that period, and with 4 available CPU cores,
     14,531,250 microseconds (14.531250 seconds) were spent in user mode
         15,625 microseconds ( 0.015625 seconds) were spent in system mode
 80,299,744 bytes of memory allocated.
(RECOGNIZESP S BAD-INPUT)
took 24,542,000 microseconds (24.542000 seconds) to run.
        173,622 microseconds ( 0.173622 seconds, 0.71%) of which was spent in GC.
During that period, and with 4 available CPU cores,
     12,281,250 microseconds (12.281250 seconds) were spent in user mode
         46,875 microseconds ( 0.046875 seconds) were spent in system mode
 55,475,904 bytes of memory allocated.
..........
 Did 34 checks.
    Pass: 34 (100%)
    Skip: 0 ( 0%)
    Fail: 0 ( 0%)