Opal Editor, free Obsidian alternative for markdown and site publishing
A fully featured markdown editor and publisher. Free, open-source and browser-first (no backend required). Built with modern technologies like React, TypeScript, Shadcn/UI, and Vite. (thoughtfully crafted, not vibe coded)
Opal Editor, free Obsidian alternative for markdown and site publishing launched on January 18, 2026 with 36 votes, #607 of 14,585 launches that month and more than 95% of that year's launches.
In plain words
Opal Editor is a free, open-source markdown editor and publisher that runs entirely in the browser without requiring a backend server. It allows users to write and publish content using markdown formatting. Built with React, TypeScript, Shadcn/UI, and Vite, it serves as an alternative to Obsidian for those seeking a lightweight, web-based solution for markdown editing and site publishing.
written from the facts on this page · September 2026
From the sources
A git enabled local-first browser-first markdown workspace wysiwyg editor and publisher. Built with mdx-editor, code mirror 6, react, shadcn and typescript - GitHub - rbbydotdev/opal: A git enabled local-first browser-first markdown workspace wysiwyg editor and publisher. Built with mdx-editor, code mirror 6, react, shadcn and typescript
A local-first markdown editor and static publisher—no-server-required, Git-aware, with complete self-custody and zero backend dependencies. npm install npm run dev Hire Me 👋 Opal Editor is completely free to use and own with absolutely no profit motive or incentive. Beyond creating a feature-rich Markdown editor and publisher for the open-source community, it also serves as a way for me to showcase my skills as a developer. If you like what you see and would like to discuss an opening at your company/startup/workshop, feel free to reach out via my website or by email . A git enabled local-first browser-first markdown workspace wysiwyg editor and publisher. Built with mdx-editor, code…from github.com
Does a similar job
all alternatives →
A renderless and extendable rich-text editor for Vue.js2019 · github.com · ▲278The headless rich text editor framework for web artisans. - ueberdosis/tiptap
OpenKnowledge – open source AI-first alternative to Obsidian/NotionJun 2026 · github.com · ▲381Hi HN, Nick here. We’re launching OpenKnowledge (https://openknowledge.ai/), a “what you see is what you get” markdown editor that has direct integrations with Claude, Codex, and other agents. Available as MacOS app or Web UI+CLI. Fully free/local and OSS. We built this because we wanted a Notion-like experience for writing and sharing markdown files across our team. Obsidian is the best alternative we tried, but found it doesn’t have a true WYSWIG UI and it didn’t integrate well with Claude/Codex outside of community plugins. So we built OpenKnowledge. It takes…
Tiptap Editor 3.0 Beta2025 · tiptap.dev · ▲446Show HN: Tiptap Editor 3.0 Beta is out. Hi HN! Philip here from Tiptap (https://tiptap.dev/). We're excited to announce Tiptap 3.0 Beta, a major upgrade built with and for the open source community. It's still extension-based, still unopinionated, but we've tackled some of the biggest developer headaches: Enhanced TypeScript support: Strong typing for extension storage and config options. Server-side compatibility: Manipulate editor content on the server, no DOM required. JSX support: Leverage a modern, React/Vue-like approach to describing your node output. Expanded…
An open-source, collaborative, WYSIWYG Markdown editor2023 · editor.vrite.io · ▲460Inspired 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…
Open-source .docx editor library for building document appsMay 2026 · github.com · ▲107We are working on an open-source .docx editor library for apps that need to edit Word documents in the browser. We just shipped 1.0. A lot of existing approaches convert .docx into HTML and lose document semantics along the way. Our editor parses OOXML directly and uses its own rendering+layout engine to produce paged documents with html/css. Edits round-trip back to .docx, so you’re always editing the document, not its representation. The core rendering engine is framework agnostic, with React and Vue ui adapters on top. It’s Apache 2.0. Happy to answer questions.
ORY Editor – A rich editor for the browser, built with React and Redux2017 · github.com · ▲369Next-gen, highly customizable content editor for the browser - based on React and written in TypeScript. WYSIWYG on steroids. - react-page/react-page
More dev tools this month
the category →
open-source IDE for thoughtful software design. Contribute to devdotfast/whiteboard development by creating an account on GitHub.
Dev tools · 27d ago · github.com
Contribute to reladraw/reladraw development by creating an account on GitHub.
Dev tools · 25d ago · github.com
OpenBot▲362Grok Bot alternative: free, local, open-source, multiplayer
Dev tools · 22d ago · openbot.run
Talanoa▲340Hi 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 · 20d ago · talanoa.email
CoreSpeed▲332One MCP for everything your agents need: apps, memory, tools
Dev tools · 27d ago · corespeed.io
Source: Show HN post ↗
Launched alongside, January 2026
the whole month →- IN
Hey HN! I wanted to share something I built over the last few weeks: isometric.nyc is a massive isometric pixel art map of NYC, built with nano banana and coding agents. I didn't write a single line of code. Of course no-code doesn't mean no-engineering. This project took a lot more manual labor than I'd hoped! I wrote a deep dive on the workflow and some thoughts about the future of AI coding and creativity: http://cannoneyed.com/projects/isometric-nyc
AI · Jan 2026 · cannoneyed.com
Automatic AI-powered code reviews the moment you open a PR
Dev tools · Jan 2026 · kilo.ai
