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Calca
Calca is a symbolic calculator designed for technical professionals who need to perform complex mathematical computations
verified Jul 12, 2026 · HTTP 200
CohortClass of 2014What it is
Calca is a symbolic calculator designed for technical professionals who need to perform complex mathematical computations. It combines symbolic manipulation with numerical evaluation to streamline calculation workflows. The tool enables users to work with mathematical expressions in a more natural, formula-based approach.
HTTP liveness
9 probes since Jun 16Jun 16Jul 12
AliveHard-dead (404/5xx/parked)RedirectedUnverified (timeout/DNS/block)
Observed events
probes · press · GitHub- Jun 16, 2026First probe — liveAlive · 200 OK
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Pulse Indexobserved activity
9 probes0 pressGitHub –Tranco –
Not enough observed signals for a Pulse Index (needs 2+ signal families).
Cohort survival · Class of 2014weekly
10,235 products launched in 2014 · 99% still active
10,131 active104 sunset
Still active
99%
Median lifespan
4.9y