MDBuild.io

What it does

MDBuild is a lightning-fast, privacy-first markdown editor and knowledge-base platform that brings together live preview, Mermaid diagrams, KaTeX math, export to PDF/HTML/DOCX/image, and optional cloud sync—all under one clean interface.

Free markdown editor with live preview, GitHub Alerts, Mermaid diagrams, KaTeX math, and export to PDF, HTML, DOCX, PNG. Private, no sign-up.

MDBuild is a free, private, browser-based markdown editor for writers and developers. Write GitHub-flavored Markdown with live preview, GitHub Alerts, Mermaid diagrams, KaTeX math equations, interactive task lists, footnotes, and syntax-highlighted code blocks. Export to PDF, HTML, DOCX, and PNG. Works offline as a Progressive Web App — no sign-up, no server, no tracking. Your documents stay in yourfrom mdbuild.io

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  Slate-md-editor – A markdown editor that allows live editing2018 · github.com · ▲123

  📝Rich Text / WYSIWYG Editor built for Modularity and Extensibility. - CannerCMS/canner-slate-editor

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  Neptune by Hashnode2022 · hashnode.com · ▲250

  Our Markdown-based WYSIWYG editor for composing blog posts

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  MDV – a Markdown superset for docs, dashboards, and slides with dataApr 2026 · github.com · ▲152

  MDV — a Markdown superset for documents, dashboards, and slides with embedded data and visualizations. HTML + PDF export, live preview, VS Code extension. - drasimwagan/mdv

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  MD+HTML ReaderJun 2026 · mdhtmlreader.com · ▲117

  Review AI-generated Markdown and HTML in a focused workspace

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  MD ViewerApr 2026 · mdview.co · ▲2

  Markdown editor-LaTeX math,Mermaid diagrams,instant sharing

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  MDEditorsy2021 · mdeditorsy.vercel.app · ▲85

  A Drag And Drop editor to create Markdown/Github profiles

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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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  Cursor 2.0▲957

  Our first coding model and new interface for agents

  AI · Oct 2025 · cursor.com

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  Flask▲806

  Notion + Loom, for video collaboration.

  AI · 2025 · flask.do

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  Strange Attractors▲804

  I went down the rabbit hole on a side project and ended up building this: Strange Attractors(https://blog.shashanktomar.com/posts/strange-attractors). It’s built with three.js. Working on it reminded me of the little "maths for fun" exercises I used to do while learning programming in early days. Just trying things out, getting fascinated and geeky, and being surprised by the results. I spent way too much time on this, but it was extreme fun. My favorite part: someone pointed me to the Simone Attractor on Threads. It is a 2D attractor and I asked GPT to extrapolate it to…

  AI · Oct 2025 · blog.shashanktomar.com

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  Orchestra▲793

  A chat-centric workspace for builders and modern teams

  Work · 2025 · orch.so

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  Autism Simulator▲779

  Hey all, I built this. It’s not trying to capture every autistic experience (that’d be impossible). It’s based on my own lived experience as well as that of friends on the spectrum. I'm trying to give people a feel for what masking, decision fatigue, and burnout can look like day-to-day. That’s hard to explain in words, but easier to show through choices and stats. I'm not trying to "define autism". I’ve gotten good feedback here about resilience, meds, and difficulty tuning. I’ll keep tweaking it. If even a few people walk away thinking, "ah, maybe that’s why my coworker struggles in those…

  Life & fun · 2025 · autism-simulator.vercel.app

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  Director▲768

  Lovable for web automation

  AI · 2025 · director.ai