Sites and apps similar to Tenno include Zettlr, which is free and open source. Other options are Typora, Trilium Notes, ghostwriter and Marknote. Text Editors like Tenno are a crowded field, with more than 50 alternatives for Mac, Windows, Linux, self-hosting and Android.
Unified writing platform offering note-taking, easy citations with Zotero integration, LaTeX/Word templates, snippets, themes, dark modes, code highlighting, multi-language support, and knowledge management with Zettelkasten for seamless writing from notes to books.
Germany
EU
A minimalist Markdown editor offering cross-platform synchronization, live preview, and seamless export/import in various formats like PDF, DOCX, and LaTeX. Features include distraction-free Focus and Typewriter modes, file management with tree and articles panels, and content organization through an outline panel.
China
The original trilium is transfered to this repo by its owner and the app continues to develop here as stated here: https://github.com/TriliumNext/Trilium
ghostwriter is a feature-rich text editor using Markdown syntax which makes it suitable for note-taking, document redaction, simple HTML website creation and much more.
GermanyEU
Marknote lets you create rich text notes and easily organise them into notebooks. You can personalise your notebooks by choosing an icon and accent color for each one, making it easy to distinguish between them and keep your notes at your fingertips.
GermanyEU
Open-source Markdown editor on Mac, Windows, and Linux offering real-time preview, clean interface, and various themes. Supports math expressions, exports HTML/PDF, allows image pasting, and more.
Singapore
Rentry.co is a markdown pastebin and publishing service with preview, custom urls and editing. Fast, simple and free.
United States
Full-featured, open-source Markdown editor based on PageDown, the Markdown library used by Stack Overflow and the other Stack Exchange sites.
FranceEU
Block-organized, privacy-focused scratchpad for developers with language-specific syntax highlighting and auto-formatting, supporting JavaScript, JSON, Markdown, notes, API responses, and daily planning, all in a persistent local buffer with minimalist interface.
SwedenEU
HedgeDoc (fcommunity-driven fork of CodiMD) is an open-source collaborative markdown editor. With HedgeDoc you can easily collaborate on notes, graphs and even presentations in real-time. All you need to do is to share your note-link to your co-workers, and they’re ready to go.
GermanyEU
Your team’s knowledge base Team wiki, documentation, meeting notes, playbooks, onboarding, work logs, brainstorming, & more….
United States
ReText is a simple text editor for Markdown and reStructuredText documents with syntax highlighting and optional live preview.
