µCalc is the most popular Web-based & Self-Hosted alternative to Blabr.
µCalc is the most popular Open Source & free alternative to Blabr.
- µCalc is Free and Open Source
Blabr Alternatives
Blabr is described as 'Interactive tables, sliders, plots and more. Scientific computing in the browser' and is an website. There are more than 10 alternatives to Blabr, not only websites but also apps for a variety of platforms, including Self-Hosted, Mac, Windows and Linux apps. The best Blabr alternative is µCalc, which is both free and Open Source. Other great sites and apps similar to Blabr are Calculist, Observable Notebooks, Kajero and Swift Calcs.
Alternatives list
Calculist is an open source application that facilitates effective thinking. Write down your thoughts, ideas, and data in the form of lists. Focus your attention by zooming in to a specific list, and zoom out to see the broader context.
Cost / License
- Free
- Open Source
Platforms
- Online
- Self-Hosted

Observable is a better way to code. Discover insights faster and communicate more effectively with interactive notebooks for data analysis, visualization, and exploration.
Cost / License
- Free
- Proprietary
Platforms
- Online



Kajero is the most popular Windows, Mac & Linux alternative to Blabr.
- Kajero is Free and Open Source
The Collaborative Computational Notebook Built for Modern Engineering. Enter math as it appears on paper, get instantaneous results, and share your calculations with colleagues and clients. No special syntax, no software, no headaches, no kidding.
Cost / License
- Subscription
- Proprietary
Platforms
- Online


Swift Calcs is the most popular commercial alternative to Blabr.
- Swift Calcs is Paid and Proprietary
Carbide is a new kind of programming environment that uses a notebook format with live coding features to facilitate development and debugging.
Cost / License
- Free
- Proprietary
Platforms
- Online


Iodide is a notebook programming environment for the web. Users can make use of JavaScript, Markdown, CSS and external resources to communicate ideas comfortably and efficiently through a minimalist notebook interface.



For jotting down quick calculations. Mix free form text with calculations and see the results appear in the right hand margin as you type.

Hyperdeck is a notebook environment for front-end programming, making it easy to analyze data, run code, and write documents using standard web technologies.
Cost / License
- Free
- Proprietary
Alerts
- Discontinued
Platforms
- Online


+3
Bl.ocks (pronounced “Blocks”) is a simple viewer for sharing code examples hosted on GitHub Gist. For example, if your Gist URL is: https://gist.github.com/mbostock/1353700
Cost / License
- Free
- Proprietary
Platforms
- Online





























