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  • Atbash cipher

    This calculator allows you to encrypt and decrypt text with Atbash method

  • HTML table to JSON array

    Th calculator converts the html table code to JSON array with optional data transpose and compression. It also visualizes numeric data on chart.

LL1 grammar analysis. Yet another top-down parser generator.

The calculator checks LL1 grammar correctness, parses a text using the grammar, shows FIRST, FOLLOW and FIRST PLUS sets, parsing tree and gives PLANETCALC parsing code.

PLANETCALC, LL1 parser generator

LL1 parser generator

Extended BNF grammar in ISO/IEC 14977 : 1996(E) form.

Rule names divided by comma, which must be removed.

  • RAID arrays сalculator

    This calculators shows the possible variants of RAID arrays, based on the number of drives available.

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