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Books4Languages
An open publishing company dedicated to creating free, reusable, and modifiable educational materials for language learners and instructors
last checked Jul 13, 2026 · Unknown
CohortClass of 2026What it is
An open publishing company dedicated to creating free, reusable, and modifiable educational materials for language learners and instructors. Books4Languages provides unconstrained open educational resources designed to support effective second language acquisition without licensing restrictions.
HTTP liveness
9 probes since Jun 16Jun 16Jul 13
AliveHard-dead (404/5xx/parked)RedirectedUnverified (timeout/DNS/block)
Observed events
probes · press · GitHub- Jun 16, 2026First probe — unverifiedUnknown
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Pulse Indexobserved activity
92/4 signal families
Liveness40%0.20
Press30%no data
GitHub20%no data
Tranco10%0.09
Weighted observed activity · updated Jul 15
Cohort survival · Class of 2026weekly
550 products launched in 2026 · 100% still active
550 active0 sunset
Still active
100%
Median lifespan
4.9y