AI assistants today live in browser tabs. You open one for writing, another for code, a third because it's better at research, and a fourth because your team uses it. Each one is locked to its own provider, its own pricing, and its own walled-off context. None of them can touch your files, run a command, or carry what they learned from one session into the next.

Joanium is built to change that.

Joanium is a local-first, open-source AI desktop app that runs on your machine, connects to nearly every major AI provider, and gives that AI the tools to actually act — not just respond.

Website: joanium.com
Source code: github.com/Joanium/Joanium

One App, Every Model

Joanium supports Gemini, Claude, OpenAI models, and a growing list of additional providers including Fireworks, SambaNova, AI21, Lambda, and Hyperbolic — with live model fetching, so new releases show up without waiting on an update. You bring your own API keys and choose the right model for the task, the budget, or the moment, without rebuilding your workflow every time you switch.

An AI With Hands: 160+ Tool Integrations

Most AI tools can describe what they'd do. Joanium's agents can go do it. With 160+ built-in tool integrations — covering platforms like GitHub, Gmail, YouTube, Linear, Netlify, Canva, and Stripe — Joanium can read your repos, draft and send emails, manage tickets, and interact with the services you already use, directly from a single interface.

Multiple Agents, Working Together

Rather than relying on one general-purpose assistant for everything, Joanium supports multi-agent execution along with a skills and personas system. You can configure agents for specific roles and let them collaborate on a task — closer to delegating work across a small team than managing a single chat window.

Full Visibility Into What Your AI Did

Two features sit at the core of how Joanium handles transparency:

Execution Replay — step through exactly what an agent did, in order, after the fact.
Conversation forking with provenance tracking — branch a conversation in a new direction without losing the trail of where it came from.

When an AI is taking real actions on your behalf, being able to see — and audit — those actions isn't a nice-to-have. It's the baseline.

Built-In Browser, Git Integration, and a Marketplace

Joanium also includes an inbuilt browser for agents to use directly, native Git integration for working with repositories, a Daily Digest Agent that surfaces relevant updates automatically, and a Marketplace for discovering and installing additional tools and skills as the ecosystem grows.

Why Local-First, and Why Open Source

Most AI tools today route everything — your prompts, your files, your context — through someone else's servers, under someone else's terms. That tradeoff has been easy to ignore when AI was mostly a chat window. It gets harder to ignore once that AI is reading your emails, browsing on your behalf, and pushing to your repositories.

Joanium runs locally, and its source is fully open under the Apache 2.0 license. That means the code doing all of this is inspectable, forkable, and not contingent on a company's roadmap or pricing decisions.

It's also worth being precise about one thing: Joanium itself is free and open source, but using it still involves paying AI providers for API usage — there's no way around that, and no product can honestly claim otherwise. What changes is who you pay and how much control you have over that. Instead of stacking multiple subscriptions regardless of use, you pay per request, choose your providers, and switch whenever it makes sense. For many people juggling several AI subscriptions today, that alone is a meaningful shift.

Get Started

Joanium is available now:

Website: joanium.com
GitHub: github.com/Joanium/Joanium

Download it, connect an API key for a provider you already use, and explore what it can do. As an open-source project, feedback, issues, and contributions are welcome — and actively shape what gets built next.