Alternatives
Products that do what Opal Editor does
serverless browser-first markdown editor and publisher
- 1OE
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)
Jan 2026 · github.com
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- 3AO
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
- 4ME
I wanted to see how far I could go building a notes app using only what modern browsers already provide – no frameworks, no storage APIs, no build step. What it does: Single HTML file, no deps, 111 loc Notes live in the URL hash (shareable links!) Auto-compressed with CompressionStream Plain-text editor (contenteditable) History support Page title from first # heading Respects light/dark mode No storage, cookies, or tracking The entire app is the page source. https://textarea.my/
Dec 2025 · github.com
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LocalMark Studio▲112A fast, local-first Markdown editor for real work.
Jan 2026 · editor.karthikponnam.dev
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- 10AI
2022 · triplelog.com
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- 18FM
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
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- 21LF
I'm not the author of the app (nor i have any connection with them, just a random user). iA Writer and Writer Pro aren't well suited for me as a developer. They feel quite "strange" to me. Mou is a good option (free too) but still missing some features. So far this, this editor is the most complete user-friendly. Hope it helps!
2013 · clockworkengine.com
- 22AF
I built a web-based HTML/CSS/JS editor focused on speed, simplicity, and offline access. No bloat — just open and start coding. What makes it different: Live Preview – Edit HTML, CSS, and JS side-by-side with instant feedback. Offline support – Works without internet. You can even install it as a PWA and use it like a native app. No Login Required – Just visit, code, and preview. Login only if you want to save/share. Savable & Shareable Links – Save scripts in the cloud and get shareable links. Customizable Editor – Themes, fonts, auto-format on save, layout tweaks, line…
2025 · scriptpad.dev
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- 24SC
2024 · github.com
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