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Bootstrap.build
A powerful Bootstrap theme builder — https://bootstrap
verified Jul 13, 2026 · HTTP 200
CohortClass of 2017What it is
A powerful Bootstrap theme builder — https://bootstrap.build is a web app to create custom Bootstrap themes and export them to a SASS variables file or a brand new Bootstrap build. Enjoy inline code editor, Sketch-like color picker, +/- buttons for unit variables, SASS variables typeahead and Google fonts integration. Open Source! [Design Tools, Developer Tools]
HTTP liveness
21 probes since May 23May 23Jul 13
AliveHard-dead (404/5xx/parked)RedirectedUnverified (timeout/DNS/block)
Observed events
probes · press · GitHub- May 23, 2026First probe — liveAlive · 200 OK
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VitalsQuiet
Upvotes
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Press
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Pulse Indexobserved activity
21 probes0 pressGitHub –Tranco –
Not enough observed signals for a Pulse Index (needs 2+ signal families).
Cohort survival · Class of 2017weekly
13,497 products launched in 2017 · 100% still active
13,462 active35 sunset
Still active
100%
Median lifespan
4.9y