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CLUSTER CALCULATOR-FUNCTIONS-HISTORY · 7 ENTRIES · EARLIEST ENTRY 2026-08-12

Web-based scientific calculators

This cluster consists of web-based scientific calculators offering trigonometric, logarithmic, power, and engineering functions, along with expression history, memory keys, and keyboard input. The dated history is too thin to read a shape from, with only one dated entry before the index start, so the cluster predates the index or its members are undated. Traction leaders among the members, based on activity signal, are fullmab, SciCal600, and darkkalk-py, all with zero stars.

Entry timeline

ENTRY TIMELINE

JUN 2026: 1AUG 2026: 2SEP 2026: 3OCT 2026: 1
JUN 2026OCT 2026

Each bar is the month a member carries, which is a creation date where the source published one and a crawl date otherwise. Nothing in the index was found before 11 August 2026, and coverage broadened sharply on 14–15 August, so a bar from then on reports how much we found that month, not how much was built; an earlier bar reports how far back a member's own source dated it — not how long we have been watching.

Members by activity

Activity signals, not revenue.

Build origin · 1 hand-coded · 6 unlabelled

Operator · 4 hobby · 2 open source · 1 unlabelled

Two labels per entry, never collapsed into one: how it was built, and who stands behind it. Counted over the 7 listed below. Unlabelled means nothing has decided yet — not that the answer is small.

  1. 01fullmab0★18 days—hobbyWeb-based scientific calculator with advanced math functions, expression history, keyboard input, and memory operations.
  2. 02SciCal6000★26 dayslivehobbyWeb-based scientific calculator platform offering scientific, linear algebra, computer, and economics calculators.
  3. 03darkkalk-py0★12 dayslivehobbyDesktop scientific calculator that evaluates algebraic expressions with arbitrary precision, supports memory registers, and exports timestamped audit logs.
  4. 04fastapi-engineering-calculator1★2 mo—hobbyWeb-based scientific calculator with trigonometric, logarithmic, and engineering functions, angle modes, calculation history, and memory keys.
  5. 05Calculator0★1 moliveopen sourceFeature-rich calculator application for basic and scientific calculations.
  6. 06KCalc0★unknownlivehand-codedopen sourceScientific calculator application offering trigonometric, logic, and statistical functions with a recall stack for desktop users.
  7. 07Scientific Calculator0★unknownliveScientific calculator that supports trigonometric, logarithmic, power, and memory functions, with printed tape history and keyboard input.

Ranked by traction, highest first, and paged 20 at a time — this is a window on the cluster, never the whole of it. Ties are broken by a stable id so a product cannot appear on two pages or fall between them. Browse every cluster.