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tech 3 June 2026

Edsger: A Handwritten Clojure REPL for the reMarkable 2

Explore how Edsger transforms the reMarkable 2 into a powerful tool for Clojure coders, combining handwritten simplicity with the power of functional programming.

Article inspired by the original source
Edsger – a handwritten Clojure REPL for the reMarkable 2 ↗ handwritten.danieljanus.pl

Introduction

In the ever-evolving world of technology, the tools at our disposal shape how we work and think. The reMarkable 2, known for its ability to simulate the paper writing experience, is a perfect example of how hardware can influence creative and productive practices. With the introduction of Edsger, a handwritten Clojure REPL, this device takes on a new dimension for developers and Clojure enthusiasts.

What is Edsger?

Edsger is an interactive programming environment that allows users to write Clojure code directly on their reMarkable 2 tablet. Inspired by the simplicity and elegance of the Clojure language, this project aims to offer a unique coding experience by leveraging the reMarkable 2’s touch interface. Edsger turns your tablet into a powerful tool for experimentation and rapid prototyping.

Why Clojure?

Clojure is a functional programming language that runs on the JVM and is known for its conciseness and power. It is particularly favored in the fields of data science and web application development. The ability to use a REPL to quickly test ideas is one of the reasons why Clojure is so popular among developers.

User Experience with Edsger

Using Edsger on the reMarkable 2 is straightforward. The simple user interface allows developers to focus on the code rather than managing files or settings. Handwritten input is converted into Clojure code, enabling intuitive interaction. Code results are displayed in real-time, making it easy to debug and iterate on ideas quickly.

Use Cases

Rapid Prototyping

With Edsger, developers can sketch out code ideas and test them immediately. This ability to move from idea to execution without a traditional computer is a major advantage for rapid prototyping.

Learning and Teaching

For those learning Clojure or teaching the language, Edsger offers a practical and interactive approach. Writing code by hand can help better understand programming concepts.

Creative Development

Artists and digital creators can use Edsger to experiment with new ideas more freely and intuitively, without the constraints of a keyboard.

Impact and Future

The impact of Edsger on the Clojure developer community could be significant. By making coding more accessible and intuitive, Edsger might encourage a new generation of programmers to explore the possibilities offered by Clojure on innovative hardware platforms. In the future, integrating additional features such as voice recognition or improved handwriting recognition could further enhance the user experience.

Conclusion

Edsger transforms the reMarkable 2 into an innovative tool for Clojure developers, blending the simplicity of handwriting with the power of code. Whether you're an experienced developer or a curious beginner, Edsger offers a new way to interact with Clojure.

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Edsger Clojure reMarkable 2 REPL handwritten coding
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