• Enso - org/enso) | 2023
• Unison - files edited in your text editor of choice. Originally centered around having a projectional editor, but pivoted to creating a cloud programming language first | Haskell | [5301](https://github.com/unisonweb/unison) | 2023
• Lamdu
• MPS
• Dark
• Hazel
• JOY.js
• Fructure - implemented languages | Racket | [412](https://github.com/disconcision/fructure) | 2020
• tylr - based editor for well-formedly manipulating sequences of tokens | Reason | [249](https://github.com/hazelgrove/tylr) | 2022
• Vlojure - Hoeppner/Vlojure) | 2022
• Subtext
• Eyg - lang) | 2023
• Freon - based Projectional Language Workbench | TypeScript | [57](https://github.com/projectit-org/ProjectIt) | 2023
• Foundry
• Alfa - | 2020
• OCell - | 2020
• Lamdu
• Sapling - inspired modal structured editor for existing languages | Rust | 694 | 2024
• Holbert
• ProjecturEd
• Tofu
• Envision - asenov/Envision) | 2022
• Forest
• Lisperanto - like language | JavaScript | 39 | 2022
• Foundry
• Gopcaml-mode - mode) | 2022
• Frugel
• Javardise
• Freon - based Projectional Language Workbench | TypeScript | [62](https://github.com/projectit-org/ProjectIt) | 2023
• SplootCode - | 2023
• Cirru - editor) | 2023
• Fructure - implemented languages | Racket | [440](https://github.com/disconcision/fructure) | 2024
• Freon - based Projectional Language Workbench | TypeScript | [62](https://github.com/projectit-org/ProjectIt) | 2023
• Cursorless - dev/cursorless) | 2024
• SplootCode - | 2023

Unreleased Projects

• Roc
• Dion Systems
• Neurion

Concluded or inactive projects

• Prune
• Expressions of Change - 2018 | |
• Isomorf - browser editor for a language that can appear in a syntax of the user's choosing among a few options appearing like different popular programming language
• Cedalion - 2013 | 🎓 👶 |
• Novella - 2020 | | A structural editor infrastructure, in 2020 author moved on to develop Inflex instead.
• Omni - 2017 | 👶 |
• Viskell - 2017 | λ | Visual programming meets Haskell
• Zinal - 2017 | 👶 |
• Golem - 2016 | 🎓 📖 ⌨️ 👶 λ ｟ 🌐 | Online tree editor and debugger for [Shem](https://github.com/xixixao/Shem), a functional LISP-like language which compiles to JavaScript
• Inflex - 2022 | 💵 🌐 👶 λ | A spreadsheet-inspired functional programming language
• Intentional software - 2017 | 💵 | Started as a Microsoft project to develop a projectional editor in the late 1990s (see [video from 2000](https://youtu.be/tSnnfUj1XCQ)), which later spun up as an independent company, which later pivoted to develop a language workbench. Despite being founded and self-funded by [a Billionaire](https://en.wikipedia.org/wiki/Charles_Simonyi), it was ultimately acquired by Microsoft at 2017, with the original projects being cancelled (afaik).
• Eve - 2018 | 💵 👶 | A startup that made a series of experimental programming systems and was shut down in 2018.

Concluded or inactive projects

• Hopscotch
• Microsoft MakeCode
• Scratch
• Snap
• Alice

Concluded or inactive projects

• Object Spreadsheets
• Mesh

Concluded or inactive projects

• Apparatus
• Cycle.js Dev Tools
• JSON Editor - based editor | JavaScript
• Greenfoot/BlueJ - text hybrid | Java
• Apparatus

Related lists

• The whole code catalog - An in-depth review of 23 structural and low-code projects by Steve Krouse from 2019. Sponsored by Dark.
• Gallery of programming UIs - By Jonathan Edwards.
• Visual Programming Languages - Snapshots - By Eric Hosick.

Community

• Reddit: /r/nosyntax - A subreddit about projectional/structural editing.
• Future of Coding - A Slack-based community with a wider focus.
• LIVE Programming workshop - An annual workshop at the SPLASH conference mainly focused on live programming.