Alternatives
Products that do what Ruby gem for parsing Mermaid syntax, an extension of kramdown does
Hi HN, I've just made a ruby gem for parsing Mermaid syntax, and it's an extension of kramdown parser. I'd love to get feedbacks and or problems you encounter.
- 1FM
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
- 2AR
Hi HN and great ruby hackers, I have just published a ruby gem for generating migration files from markdown files written in Mermaid.js. You can write down some ER diagrams on markdown files and then generate migration files via running single command. I'd really love to get feedbacks and or problems.
2023 · github.com
- 3OA
2013 · omniref.com
- 4SA
2022 · shalerb.org
- 5BR
2015 · best-ruby.com
- 6PA
2011 · github.com
- 7RT
2018 · github.com
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Line9 is a new rendering engine for Mermaid flowchart diagrams that aims to remove the need for manual adjustment of layout. Mermaid is a popular text-based language for describing multiple types of diagrams. Several Mermaid rendering engines already exist. Most, like the original mermaid.js, use Dagre or ELK graph drawing libraries to automatically lay out their diagrams. I’ve used Mermaid for the past four years but often recreated my flowcharts in a diagram editor so that I could modify the layout to something that better suited my needs. Use Line9 when you want an automatic flowchart…
Aug 2026 · line9.ai
- 9IU
2024 · github.com
- 10RT
2012 · rubymotion-tutorials.com
- 11PA
Hello HN, I introduce a property-based testing tool for Ruby. Ruby's ease of test-writing and rich ecosystem are widely acclaimed. However, property-based testing is not as widely used as in other languages such as Haskell or Elixir, and I think this is because there is no de facto testing tool. This gem currently not only has the basic functionality of stateless property-based testing but also has the following features: - Support verbose mode that allows you to see its shrinking procedure and algorithms. - Support several concurrency/parallel executions of each test. As of now,…
2024 · github.com
- 12KD
2015 · kontena.io
- 13IJ
Built this for streaming AI tool calls. LLMs stream function arguments as JSON character-by-character. Most parsers reparse from scratch each time - O(n²) behavior that causes UI lag. This maintains parsing state, processing only new characters. True O(n) performance that stays imperceptible throughout the entire response. Ruby gem, MIT licensed. Would love feedback.
Oct 2025 · aha.io
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- 15AS
This is a hobby project of mine that I started a few years ago to learn about programming language implementation. It was created 95% without AI, although a few recent commits include code from Gemini CLI. I started out following Crafting Interpreters, but gradually branched off that until I had almost nothing left in common. Tech stack: Rust, Cranelift (JIT compilation), LALRPOP (parser). Original title: "A small programming language where everything is a value" (edited based on comments)
Jan 2026 · github.com
- 16FG
It is a kind of grep for YAML and JSON files. It allows you to search for a key and get the value and the line number where it is located. I created this tool because I sometimes struggle to find specific keys in typical i18n rails yamls. In the views, you don't always have the whole key, but it is extrapolated from the context. I am sure there are other use cases; I hope you find it useful. Cheers!
2024 · github.com
- 17AJ
2012 · github.com
- 18AL
2011 · github.com
- 19GA
Ghore is a simple cli tool to preview markdown files like they would appear on Github. It doesn't rely on Github's API and can be used completely offline. It also supports live preview of mermaid code blocks (Github's API doesn't process mermaid codeblocks).
2024 · github.com
- 20OS
Hi! I just made an obsdian alternative in terminal after searching for an Obsidian like TUI and got nothing. So I built one myself.
Dec 2025 · github.com
- 21AC
2012 · kerrick.github.com
- 22VA
Wrote this to learn more about the `chumsky` parser combinator library, rustyline, and the `ariadne` error reporting crate. Such a nice DX combo for writing new languages. Still a work in progress, but I thought I'd share :)
2025 · github.com
- 23IM
tl;dr: My first Ruby project: https://github.com/symkat/GFM-Service Something I have wanted for a long time, has been to use GitHub Flavored Markdown in projects. Since those projects haven't been Ruby, using the awesome libraries GitHub's released has been a non-started. Now, running this and using HTTP and JSON from any language lets me use GitHub Flavored Markdown in my projects.
2012
- 24MT
2020 · github.com
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