Reimagining the microservice: an early preview
We've developed a nicer way to build microservices in Unison. This post is a quick preview. This hasn't been released yet, and some details may change, but it's coming soon!
Unison projects are shipping soon 🚀
Heads up: Unison is introducing a new codebase abstraction for organizing, packaging, and collaborating on code, Unison "projects". This is a high level overview of a few new concepts that will be introduced with the projects feature.
March 2023 Unison library and codebase manager updates
The Unison Codebase Manager releases version M4i. Unison contributors have authored libraries for XML, AWS, CNC and other acronyms.
Unison publishes its public roadmap
Follow along with Unison's planned improvements and upcoming features for the language, tooling, cloud platform, and ecosystem.
Visualizing remote computations in Unison
Here's how we created a simple library for visualizing Unison's api for distributed computing.
Unison Codebase Manager version M4h is here
Unison releases version M4h of the Unison Codebase Manager and an updated base library.

Unison's 2022 in Review
Reflecting on Unison's 2022 progress. Highlights include the Unison Forall conference, Unison Share code hosting, Unison Cloud beta testing, and more.
The Unison Advent-of-Code mega writeup
On the nth day of Advent, I found in your README's... Four hill climbing algorithms, three parser libraries, two livestreams, and the best of the Unison community.
Unison docs support enriched diagram rendering
The documentation experience in Unison just gained an extra dimension with support for mermaid diagrams and mathematical typesetting. Learn more about these new features and how to use them.
December library ecosystem updates
The Unison ecosystem is growing! Here are a few of our November to December highlights.
Feeding the reindeer with Unison's Advent of Code tooling ⭐️
Unison provides tooling to make it easy to try this year's Advent of Code. If you fall off the proverbial sleigh mid-way through the month of December, don't worry, the real advent is the friends you made along the way. 🎅🏻
A Unison Advent of Code announcement in verse
📯 'Twas the month before Christmas, when all through the house, not a programmer was coding, with their keyboard or mouse...
Dear Unison Language Server, you autocomplete us 💌
The Unison Language Server adds autocompletion support for Unison terms. If only the LSP integration could autocomplete all our non-Unison work. 🤔
The Unison VS Code extension includes auto-startup of the UCM
Enable auto-startup of the UCM with the Unison VS Code extension so you can start writing Unison code faster.
Unison produces stack traces for errors
To the tune of Ghostbusters: If there's something weird, and it don't look good, who you gonna call? Stack traces!
Announcing Unison Milestone Release 4
We have just released a major milestone of Unison: version M4 with code hosting, self-contained namespaces, mutable and immutable arrays, and much, much more.
JIT compilation is coming to Unison: an early progress report
Dan Doel summarizes the decision making process and progress towards native code compilation for Unison.
Unison in 2021, 2022 and beyond: year in review and future plans
2021 was a big year for Unison. We released a new alpha version roughly every other month, and each release came with some serious improvements. In total, we merged more than 600 pull requests. Here are some of the highlights.
Practical Example - Modeling a Birthday Message Service
Thank you Tavish Pegram for being the first in our community blogpost series! In this post, Tavish walks through a popular 'kata' for practicing test driven development and hexagonal architecture. Along the way, he explores Unison's type system, abilities, and testing conventions.
New milestone release of Unison
We've just put out a major new release of Unison. It includes a snazzy new UI for browsing Unison codebases, a new computable documentation format, a new faster runtime, and a new SQLite-based codebase format that substantially improves codebase performance.
Summer collaboration with Heather Miller on Unison distributed programming library
Exciting news! Heather Miller, CMU professor and Scala Center founder, who does very cool research at the intersection of programming languages, FP, and distributed systems, will be a Visiting Researcher with us this summer. Like us, Heather is passionate about finding ways to make distributed programming more compositional. We'll be collaborating together on a library for distributed computing in Unison and some interesting demo application using that library.
People are writing Unison libraries now
It's exciting to see Unison gradually coming together, but even more exciting has been seeing people writing and publishing Unison code. I've been pretty busy reviewing pull requests to the Unison base libraries and there's already a lot of useful stuff there. Thanks to everyone who has contributed so far!
Get set up for publishing Unison libraries with milestone M1l
We've just released milestone M1l of the the Unison Codebase Manager, which focused on essentials for ecosystem growth, specifically: guidance and tools for structuring and licensing your own libraries, and contributing to others.
How Unison reduces ecosystem churn
Unison doesn't have library dependency conflicts, and many sources of ecosystem churn just disappear. This fact got a brief mention in the Strange Loop 2019 talk, but that talk didn't make all the benefits totally clear. This article will attempt to highlight some of the more surprising benefits of Unison's approach.
Why Unison Computing is a public benefit corporation
Unison Computing is a public benefit corp (PBC), cofounded by Paul Chiusano, Rúnar Bjarnason, and Arya Irani. We work alongside other amazing open source contributors on the Unison language. 💜 This post talks about why Unison Computing is a PBC and also includes our first annual report.
First class documentation with live examples, rethinking the pull request, a new runtime, and more
There have been more than 700 commits to Unison's master branch since we last did one of these update posts, so a lot has happened. We've made a lot of bug-fixes and improvements to the ergonomics of Unison--too many to list them all here. Here are some highlights.
How to refactor a codebase without ever breaking it
At Scale By the Bay 2019 we gave a talk on Unison's unique approach to refactoring. This post gives a brief overview of how it works.
Here's what's been happening with Unison
Since our last official update here, we started alpha testing a first release of Unison, gave a talk at Strange Loop, and have been working towards an M2 release with lots of new features, bugfixes, and polish.
Writeup of our first Unison meetup
We had our first ever Unison meetup last Tuesday! If you missed it or just want to look back on it fondly (or if like me you struggle to remember anything from more than 2 days ago..), this post is for you!!
March update
Hi all — it's been 464 commits since our last update post, and I hardly know where to start...
New Years Update 2019
Hey everyone, Rúnar here. It's been a while since our last update. We've been busy.