I made 10 open-source Bootstrap 4 themes

In plain words

HackerThemes provided ten open-source Bootstrap 4 themes for developers building web applications. The project has been retired, though the Bootstrap 4 Cheat Sheet remains accessible and all source code is archived on GitHub. The themes were designed to help developers quickly implement styled, responsive interfaces without building from scratch.

written from the facts on this page · September 2026

From the sources

HackerThemes has been retired. The Bootstrap 4 Cheat Sheet will stay available as-is. You may still access the archived open source repositories on GitHub . Thank you for your support on HackerNews , ProductHunt , and Reddit .from hackerthemes.com

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  HackerThemes2017 · hackerthemes.com · ▲315

  Bootstrap 4 themes and tools for web developers

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  I built a handful of Bootstrap 4 themes with an interactive code picker2017 · hackerthemes.com · ▲53
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  I made an interactive Bootstrap 4 cheat sheet2016 · hackerthemes.com · ▲847

  Quickly find your Bootstrap classes on this interactive Bootstrap cheat sheet. It includes code samples and live preview of elements.

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  Bootstrap Zero2015 · bootstrapzero.com · ▲273

  Open-source, free Bootstrap templates collection.

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  Themes For App2018 · themesfor.app · ▲264

  Make free (Do whatever you want), fully-responsive themes for your next startup, newsletter, lead capture and side-project. ThemesForApp is a free online website builder that helps you create beautiful, responsive themes with ease.

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  Themes for Bootstrap2012 · wrapbootstrap.com · ▲354

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  /dev/null▲486

  a social network for devs

  Dev tools · 3d ago · dev-null.sh

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  Whiteboard (YC W26) – an open-source IDE for thoughtful software design▲423

  open-source IDE for thoughtful software design. Contribute to devdotfast/whiteboard development by creating an account on GitHub.

  Dev tools · 28d ago · github.com

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  Reladraw – A diagram language where you decide where to place things▲411

  Contribute to reladraw/reladraw development by creating an account on GitHub.

  Dev tools · 26d ago · github.com

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  OpenBot▲362

  Grok Bot alternative: free, local, open-source, multiplayer

  Dev tools · 23d ago · openbot.run

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  Talanoa▲346

  Hi HN, I’m a fullstack developer, and honestly, I’ve lost count of how many side projects I’ve worked on over the years. But one idea kept coming back to me: a different kind of email client. It first came to me in 2014: “What if we could handle emails more like conversations?” Every year, I’d revisit this concept in my “Build Notes.” Ten years later, no one had built exactly what I had in mind — so I finally decided to do it myself. That’s how Talanoa was born. I wanted something focused on people, not timelines. I was tired of marking messages as unread just to remember to reply later, or…

  Dev tools · 21d ago · talanoa.email

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  CoreSpeed▲332

  One MCP for everything your agents need: apps, memory, tools

  Dev tools · 28d ago · corespeed.io

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  Stripe Billing▲1,030

  Billing and subscriptions for fast-growing businesses

  Dev tools · 2018 · stripe.com

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  New Gmail▲935

  The new version of Gmail web

  Work · 2018 · blog.google

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  The Business Messenger by Intercom▲905

  More than just chat. Intercom's new app platform.

  Life & fun · 2018 · fin.ai

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  1.1.1.1 by Cloudflare▲871

  The Internet’s fastest, privacy-first DNS resolver

  Dev tools · 2018 · one.one.one.one

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  Artboard Studio▲732

  Online graphic design app mainly focused on product mockups.

  Growth · 2018 · artboard.studio

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  Grasshopper▲654

  The coding app for beginners by Google

  Dev tools · 2018