Dev tools · alternatives · 2026
24 alternatives to 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 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… Below are 24 products that do a similar job, ranked by how close each is in meaning and then by launch-day votes.
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The headless rich text editor framework for web artisans. - ueberdosis/tiptap
2019 · github.com · its alternatives →
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Hi 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…
Jun 2026 · github.com · its alternatives →
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Show 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…
2025 · tiptap.dev · its alternatives →
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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…
2023 · editor.vrite.io · its alternatives →
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We 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.
May 2026 · github.com · its alternatives →
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Next-gen, highly customizable content editor for the browser - based on React and written in TypeScript. WYSIWYG on steroids. - react-page/react-page
2017 · github.com · its alternatives →
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Markdown UI - Interactive widgets in Markdown
2025 · markdown-ui.com · its alternatives →
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serverless browser-first markdown editor and publisher
Jan 2026 · opaledx.com · its alternatives →
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Hey everyone, for the past like six months I've been working on a portfolio project. I got tired of doing easy projects, so I decided to tackle something bigger and more challenging. That's when I came up with the idea of a video editor. This piece of work is intended to showcase my skills and land me a job, but I like to think when working on projects that my idea is so cool that people will like to use it, and I treat every project like a startup idea. Also I havent seen many open source video editors especially on web so that was one of the points why I decided to make that and not…
2024 · its alternatives →
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- 12AE
CodeMirror 6 markdown editor with Obsidian-style inline live preview. Live demo.
May 2026 · kenforthewin.github.io · its alternatives →
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Flowershow▲174I'm Rufus, one of the founders of Flowershow. We love markdown and use it everywhere from making websites, to docs, to knowledgebases. Plus AI splits it everywhere now. Got tired of the framework/config/deploy overhead every time we wanted to share a file or put a site online. So we built the thing we wanted. Files in. Website out. "Vercel for Content" is our aspiration - make deploying (markdown) content as fast, seamless and easy as Vercel did for JS. Command line plus you can connect to github repos, use Obsidian via plugin, or drag and drop files. npm i -g…
Mar 2026 · flowershow.app · its alternatives →
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Hi HN! I got so frustrated with modern WYSIWYG editors that I started to play around with building my own. The problem I had was simple: I wanted a low-tech way to type styled text, but I didn't want to load a complex 500KB library, especially if I was going to initialize it dozens of times on the same page. Markdown in a plain was the best alternative to a full WYSIWYG, but its main drawback is how ugly it looks without any formatting. I can handle it, but my clients certainly can't. I went down the ContentEditable rabbit hole for a few years, but always came to realize others had solved it…
2025 · its alternatives →
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OpenMarkdown▲189A feather-light, local-first Markdown editor built for you and your agent.
Jul 2026 · openmarkdown.dev · its alternatives →
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A simple React markdown editor with preview
2021 · github.com · its alternatives →
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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,…
Jan 2026 · github.com · its alternatives →
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A terminal-based text editor written in Rust. Contribute to gchp/iota development by creating an account on GitHub.
2014 · github.com · its alternatives →
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Build rich editor UIs faster with React components
2025 · tiptap.dev · its alternatives →
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Markdown Editor▲126Clean, modern & open-source WYSIWYG markdown editor
2019 · mdown.vercel.app · its alternatives →
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Open source rich text editor for the modern web. Contribute to Voog/wysihtml development by creating an account on GitHub.
2014 · github.com · its alternatives →
- 24WA
I like writing Markdown, but do not like writing it inside a plain textarea. I wanted something I could use anywhere by dropping in a single web component: ``` ``` That became Writemark. It renders Markdown while you write, but Markdown remains the value you read, store, and submit. It also has source, split, and preview modes, along with slash commands, tables, task lists, code blocks, native form support, and an API for adding your own controls. There are no runtime dependencies and no required framework or built in toolbar. It is fully vibecoded. The process was very iterative. I knocked…
Jul 2026 · its alternatives →
Also compare
- A renderless and extendable rich-text editor for Vue.js alternatives
- OpenKnowledge – open source AI-first alternative to Obsidian/Notion alternatives
- Tiptap Editor 3.0 Beta alternatives
- An open-source, collaborative, WYSIWYG Markdown editor alternatives
- Open-source .docx editor library for building document apps alternatives
- Editor.js alternatives
Ranked by how close each launch is in meaning, then by votes. Prices were read from each product’s own site when checked and can change. Refine with your own description →