MarkdownLab

What it does

MarkdownLab is a fast, fully offline PWA Markdown editor for devs and technical writers tired of broken diagrams, math rendering, and previews. Built with vanilla JS — no backend, no signup, no tracking. Key Features: • 10+ Mermaid diagrams • Full KaTeX Math (with MathML) • Complete GFM incl. alerts • 190+ syntax highlighting • Multi-file workspace • Vector PDF export • 100% offline Perfect for READMEs, design docs, and research notes.

• AO
  An open-source, collaborative, WYSIWYG Markdown editor2023 · editor.vrite.io · ▲460

  Inspired by the design and UI/UX of apps like Notion, and utility of open-source apps like StackEdit, I decided to create a minimalistic, local-only WYSIWYG Markdown editor. Some features worth highlighting: - Monaco editor and Prettier integration for code snippets - Tables (apparently the holy grail of WYSIWYG editing) - Embeds (for CodePen, CodeSandbox and YouTube, most useful for HTML or JSON exports) - Accepts Markdown paste-in, and "exports"/generates HTML, Markdown and JSON outputs - Collaboration (with real-time awareness and initial commenting system, available only when…

• FM
  Ferrite – Markdown editor in Rust with native Mermaid diagram renderingJan 2026 · github.com · ▲241

  Ferrite: Fast Markdown/Text/Code editor in Rust with native Mermaid diagrams Built a Markdown editor using Rust + egui. v0.2.1 just dropped with major Mermaid improvements: → Native Mermaid diagrams - Flowcharts, sequence, state, ER, git graphs - pure Rust, no JS → Split view - Raw + rendered side-by-side with sync scrolling → Syntax highlighting - 40+ languages with large file optimization → JSON/YAML/TOML tree viewer - Structured editing with expand/collapse → Git integration - File tree shows modified/staged/untracked status Also: minimap, zen mode,…

• 
  Markdown StudioDec 2025 · ▲126

  Markdown editor built for the AI workflow era

• 
  LocalMark StudioJan 2026 · ▲112

  A fast, local-first Markdown editor for real work.

• UY
  Use your familiar Markdown editor to create and publish web pages2023 · amarkdown.com · ▲62

  I'm excited to introduce my own developed Markdown editor to everyone. It's built on the Monaco editor and designed specifically for developers. This editor integrates various features such as document management, resource management, and MDX extensions. You can embed images, audio, video, and even use plugins like drawing tools, calendars, and cards to showcase your creativity. What's even more thrilling is that it allows users to customize PostgreSQL table structures, insert and display data in Markdown documents, and even collect form submissions. My original intention in design was to…

• 
  Markdown Preview OnlineMar 2026 · ▲3

  Live Markdown Editor with Preview, Math & Diagrams

• 
  Dograh▲592

  The open source VAPI alternative

  Dev tools · 25d ago · dograh.com

• 
  Meridian▲530

  Don't let your work go unnoticed. Get promoted!

  Dev tools · 20d ago · meridiona.com

• 
  x1▲516

  Lovable for iPhone apps go from idea to App Store

  Dev tools · 11d ago · x1.new

• 
  Computable GPU Index (CGI)▲424

  The first open-source price index for GPU compute

  Dev tools · 10d ago · getcomputable.com

• 
  The GTM Co-Founder▲402

  Open-source GTM skills for technical founders

  Dev tools · 29d ago · gtmcofounder.com

• 
  Open-Source eInk Bike Computer▲401

  OpenTrailPaper is open-source bike computer firmware for the LilyGO T5S3 4.7" E-Paper PRO. It supports offline maps, GPX routes, FIT recording and Bluetooth sensors.

  Dev tools · 2d ago · opentrailpaper.com

• 
  Brew ▲905

  Like Claude design for email marketing

  AI · May 2026 · brew.new

• 
  Kilo Code for VS Code▲897

  Parallel agents, diff reviewer, and multi-model comparisons

  Dev tools · May 2026 · kilo.ai

• 
  StoreClaw▲805

  Grow your store profits with agents that know how to sell

  AI · May 2026 · storeclaw.ai

• 
  PollyReach▲796

  Give your agent a real number and voice to make calls.

  AI · May 2026 · pollyreach.ai

• NW
  Needle: We Distilled Gemini Tool Calling into a 26M Model▲776

  Hey HN, Henry here from Cactus. We open-sourced Needle, a 26M parameter function-calling (tool use) model. It runs at 6000 tok/s prefill and 1200 tok/s decode on consumer devices. We were always frustrated by the little effort made towards building agentic models that run on budget phones, so we conducted investigations that led to an observation: agentic experiences are built upon tool calling, and massive models are overkill for it. Tool calling is fundamentally retrieval-and-assembly (match query to tool name, extract argument values, emit JSON), not reasoning. Cross-attention…

  Life & fun · May 2026 · github.com

• FM
  Files.md – Open-source alternative to Obsidian▲730

  Dev tools · May 2026 · github.com