Oz
Data visualization and live-reload platform for literate programming using Vega/Vega-Lite and Hiccup.
Pricing
Free tier
Flat rate
Adoption
↘CoolingLicense
Open Source
Data freshness
Aging · Jun 8, 2026Overview
What is Oz?
Oz is a tool that enables data visualization through Vega/Vega-Lite and Hiccup, along with providing a live-reload environment for literate programming. It's particularly useful for developers who need to visualize complex datasets in real-time while iterating on their code.
Key differentiator
“Oz stands out as an open-source, locally-hosted tool that integrates data visualization with live-reload capabilities for literate programming, making it ideal for rapid prototyping and educational purposes in the Clojure ecosystem.”
Capability profile
Capability Radar
Honest assessment
Strengths & Weaknesses
↑ Strengths
↓ Weaknesses
Oz primarily supports Clojure, which may limit its usability for developers working in other languages.
Setting up Oz requires a deep understanding of both Vega/Vega-Lite and Hiccup, as well as the live-reload environment configuration.
Due to its niche focus on Clojure and specific visualization libraries, Oz has a relatively small user base and fewer community-contributed plugins or extensions.
Fit analysis
Who is it for?
✓ Best for
Clojure developers working on projects that require interactive data visualization and real-time code iteration.
Educators who want to demonstrate the power of literate programming with live feedback in a classroom setting.
✕ Not a fit for
Projects requiring cloud-based services for data visualization.
Developers looking for a web-based UI without local setup requirements.
Cost structure
Pricing
Free Tier
Available
Open source — free to use
Starts at
$0
Model
Flat rate
Enterprise
None
Performance benchmarks
How Fast Is It?
Ecosystem
Relationships
Alternatives
Works well with
Integrations
Next step
Get Started with Oz
Step-by-step setup guide with code examples and common gotchas.