Stream helps developers build engaging apps that scale to millions with performant and flexible Chat, Feeds, Moderation, and Video APIs and SDKs powered by a global edge network and enterprise-grade infrastructure. Learn more →
Top 23 Markdown Open-Source Projects
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Project mention: Enchant your terminal application with python: survey, glow, rich, textwrap. | dev.to | 2025-05-26
rich is so feature-packed that it might even feel like 'overkill' for very simple tasks. However, this extensive capability means you can do almost anything you can imagine with terminal styling and layout.
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SurveyJS
JavaScript Form Builder with No-Code UI & Built-In JSON Schema Editor. Keep full control over the data you collect and tailor the form builder’s entire look and feel to your users’ needs. SurveyJS works with React, Angular, Vue 3, and is compatible with any backend or auth system. Learn more.
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AFFiNE
There can be more than Notion and Miro. AFFiNE(pronounced [ə‘fain]) is a next-gen knowledge base that brings planning, sorting and creating all together. Privacy first, open-source, customizable and ready to use.
For replacing Notion Kanban, maybe AFFiNE, that is mostly MIT license:
https://github.com/toeverything/AFFiNE
But some part of server code license may need checking:
https://github.com/toeverything/AFFiNE/blob/canary/packages/...
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Prettier
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Project mention: I Tried 15 of the Best Documentation Tools — Here’s What Actually Works in 2025 | dev.to | 2025-07-01
Jekyll is one of the oldest and most established static site generators. It’s tightly integrated with GitHub Pages, making deployment super easy.
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⚡️ https://github.com/marktext/marktext
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firecrawl
🔥 Turn entire websites into LLM-ready markdown or structured data. Scrape, crawl and extract with a single API.
Just a few days ago, Eric - CEO of Firecrawl - announced that they were closing down their previous startup, Mendable in this article and Hassan was promoted to the Director of Developer Relations in this post, both of whom post sample applications they build on a daily basis. These recent posts are testament to the prolific impact of sample applications on the adoption of Firecrawl and Together.ai.
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memos
A modern, open-source, self-hosted knowledge management and note-taking platform designed for privacy-conscious users and organizations.
Project mention: Memos – An open-source, lightweight note-taking solution | news.ycombinator.com | 2025-05-20 -
Stream
Stream - Scalable APIs for Chat, Feeds, Moderation, & Video. Stream helps developers build engaging apps that scale to millions with performant and flexible Chat, Feeds, Moderation, and Video APIs and SDKs powered by a global edge network and enterprise-grade infrastructure.
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⚡️ https://github.com/slidevjs/slidev
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pandoc: Convert tool, we can use it to covert HTML content to markdown
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logseq
A local-first, non-linear, outliner notebook for organizing and sharing your personal knowledge base. Use it to organize your todo list, to write your journals, or to record your unique life.
Project mention: Self-hosting like a final boss: what I actually run on my home lab (and why) | dev.to | 2025-06-19Logseq
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siyuan
A privacy-first, self-hosted, fully open source personal knowledge management software, written in typescript and golang.
Project mention: SiYuan, Privacy First, Affero GPL, self-hosted PKMS written in ts and go | news.ycombinator.com | 2025-05-18I came across this project a while back and adopted it for my personal Personal Knowledge Management System/PKMS.
I've bounced around a few PKMS in the past, eventually settling on Obsidian but later moving to Logseq in an effort to avoid relying on closed source tooling. Then recently I discovered this project and I've been beyond impressed.
The desktop and mobile apps work very well and to be entirely honest are way more polished than I've come to expect from a FOSS PKMS, it's full featured with more or less everything I could want. It has a built in git-like VCS, it has integrated rendering for Mermaid, Plantuml, etc, and what I've personally found most interesting is it supports representing your notes as structured data that you can query with SQL.
My one gripe is the english docs are pretty sparse but otherwise I've had a phenominal time with SiYuan and I thought HN might find it interesting.
Github link: https://github.com/siyuan-note/siyuan
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Project mention: Apple Notes Expected to Gain Markdown Support in iOS 26 | news.ycombinator.com | 2025-06-04
it is trivially easy to create your own with libraries like this [0] (34k stars) or this one [1] (444 stars).
0: https://github.com/markedjs/marked
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awesome-javascript
🐢 A collection of awesome browser-side JavaScript libraries, resources and shiny things.
The father of UmiJS and many other tools I mentioned is Chen Cheng, the person leading the Ant Group's front-end work. They're a very productive and insightful person and open-source enthusiast, to the point of curating one of the most popular JS awesome lists — Awesome JavaScript. I would follow their blog or anything willingly but looks like everything they write is behind some esoteric type of a popular Chinese paywall service so I had left my attempts. Their and their team's repositories are quite popular, especially among the Chinese audience (which is fair).
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I built a fast, responsive, and lightweight static documentation site powered by Docsify, hosted on AWS S3 with a CloudFront CDN for global distribution. The entire infrastructure is managed using Pulumi YAML, allowing me to declaratively define and deploy resources without writing any imperative code.
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Project mention: I Tried 15 of the Best Documentation Tools — Here’s What Actually Works in 2025 | dev.to | 2025-07-01
GitBook is a popular cloud-based documentation platform designed for teams looking to write, collaborate, and publish docs effortlessly. It supports Markdown and rich text editing, making it accessible for both developers and non-technical users.
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Project mention: Show HN: We built a FOSS documentation CMS with a pretty GUI | news.ycombinator.com | 2024-09-05
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github-profile-readme-generator
🚀 Generate GitHub profile README easily with the latest add-ons like visitors count, GitHub stats, etc using minimal UI.
Project mention: 🚀 Build the Perfect GitHub Profile README with My Open Source Generator! | dev.to | 2025-07-01Inspired by rahuldkjain/gh-profile-readme-generator
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koodo-reader
A modern ebook manager and reader with sync and backup capacities for Windows, macOS, Linux, Android, iOS and Web
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# Welcome to MkDocs For full documentation visit [mkdocs.org](https://www.mkdocs.org). ## Commands * `mkdocs new [dir-name]` - Create a new project. * `mkdocs serve` - Start the live-reloading docs server. * `mkdocs build` - Build the documentation site. * `mkdocs -h` - Print help message and exit. ## Project layout mkdocs.yml # The configuration file. docs/ index.md # The documentation homepage. ... # Other markdown pages, images and other files.
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markdown-it
Markdown parser, done right. 100% CommonMark support, extensions, syntax plugins & high speed
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InfluxDB
InfluxDB – Built for High-Performance Time Series Workloads. InfluxDB 3 OSS is now GA. Transform, enrich, and act on time series data directly in the database. Automate critical tasks and eliminate the need to move data externally. Download now.
NOTE:
The open source projects on this list are ordered by number of github stars.
The number of mentions indicates repo mentiontions in the last 12 Months or
since we started tracking (Dec 2020).
Markdown discussion
Markdown related posts
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Astro is a developers f* dream
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Devlog#1 SlideMD
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Efficient HTML to Markdown Conversion for LLM Input with mq-crawler
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NoteGen mobile devices are now available for early access
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Introducing New Zuplo Developer Portals
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I Tried 15 of the Best Documentation Tools — Here’s What Actually Works in 2025
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Show HN: Distraction-Free Note Taking
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A note from our sponsor - Stream
getstream.io | 11 Jul 2025
Index
What are some of the best open-source Markdown projects? This list will help you:
| # | Project | Stars |
|---|---|---|
| 1 | rich | 52,778 |
| 2 | AFFiNE | 52,438 |
| 3 | prettier | 50,681 |
| 4 | Jekyll | 50,305 |
| 5 | marktext | 50,266 |
| 6 | firecrawl | 42,673 |
| 7 | memos | 42,500 |
| 8 | slidev | 38,745 |
| 9 | pandoc | 38,285 |
| 10 | logseq | 37,375 |
| 11 | siyuan | 35,706 |
| 12 | marked | 35,090 |
| 13 | awesome-javascript | 34,369 |
| 14 | docsify | 29,944 |
| 15 | gitbook | 28,092 |
| 16 | Wiki.js | 26,580 |
| 17 | notable | 23,194 |
| 18 | github-profile-readme-generator | 23,106 |
| 19 | koodo-reader | 23,002 |
| 20 | stackedit | 22,315 |
| 21 | MkDocs | 20,710 |
| 22 | Scrapegraph-ai | 20,224 |
| 23 | markdown-it | 19,908 |
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