December 3, 2025
Kanban is a simple, practical approach to visually managing processes and backlogs by moving work cards from one progress column to another. Toyota came up with it to track their production lines back in the middle of the 20th century, but it’s since been applied to all sorts of industries with great effect. And Fizzy is our new fun, modern take on it in digital form.
We’re certainly not the first to take a swing at this, not even for software development. Since the early 2000s, there’s been a movement to use the Kanban concept to track bugs, issues, and ideas in our industry. And countless attempts to digitize the concept over the years.
But as with so much other software, good ideas…
December 3, 2025
Kanban is a simple, practical approach to visually managing processes and backlogs by moving work cards from one progress column to another. Toyota came up with it to track their production lines back in the middle of the 20th century, but it’s since been applied to all sorts of industries with great effect. And Fizzy is our new fun, modern take on it in digital form.
We’re certainly not the first to take a swing at this, not even for software development. Since the early 2000s, there’s been a movement to use the Kanban concept to track bugs, issues, and ideas in our industry. And countless attempts to digitize the concept over the years.
But as with so much other software, good ideas can grow cumbersome and unwieldy surprisingly quickly. Fizzy is a fresh reset of an old idea.
We need more of that.
Very little software is ever the final word on solving interesting problems. Even products that start out with great promise and simplicity tend to accumulate cruft and complexity over time. A healthy ecosystem needs a recurring cycle of renewal.
We’ve taken this mission to heart not just with Fizzy’s fun, colorful, and modern implementation of the Kanban concept, but also in its distribution.
Fizzy is available as a service we run where you get 1,000 cards for free, and then it’s $20/month for unlimited usage. But we’re also giving you access to the entire code base, and invite enterprising individuals and companies to run their own instance totally free of charge.
This is done under the O’Saasy License, which is basically the do-whatever-you-want-just-don’t-sue MIT License, but with a carve-out that reserves the commercialization rights to run Fizzy as SaaS for us as the creators. That means it’s not technically Open Source™, but the source sure is open, and you can find it on our public GitHub repository.
That open source is what we run too. So new features or bugs fixes accepted on GitHub will make it into both our Fizzy SaaS offering and what anyone can run on their own hardware. We’ve already had a handful of contributions go live like this!
Ultimately, it’s our plan to let data flow freely between the SaaS and the local installations. You’ll be able to start an account on your own instance, and then, if you’d rather we just run it for you, take that data with you into the managed setup. Or the other way around!
In an age where SaaS companies come and go, pivot one way or the other, I think it’s a great reassurance that the source code is freely available, and that any work put into a SaaS account is portable to your own installation later.
I’m also just a huge fan of being able to View Source. Traditionally, that’s been reserved to the front end (and even that has been disappearing due to the scourge of minimization, transpiling, and bundling), but I’m usually even more interested in seeing how things are built on the backend. Fizzy allows you full introspection into that. Including the entire history of how the product was built, pull request by pull request. It’s a great way to learn how modern Rails applications are put together!
So please give Fizzy a spin. Whether you’re working on software, with a need to track those bugs and feature requests, or you’re in an entirely different business and need a place for your particular issues and ideas. Fizzy is a fresh, fun way to manage it all, Kanban style. Enjoy!
About David Heinemeier Hansson