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Atbash cipher
This calculator allows you to encrypt and decrypt text with Atbash method
RAID arrays сalculator
This calculators shows the possible variants of RAID arrays, based on the number of drives available.
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.
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.
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