Neoism – An open-source agent harness and native IDE in Rust

An agent framework, IDE, and terminal in one native workspace.

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Agent

A custom agent framework, built into your workspace. Bring your own models and tools, with sessions, subagents, and permissions built in.

IDE & Terminal

A real shell. A native editor. The everyday tools, without the window shuffle.

Multiplayer

Different screens. The same workspace. Share the work without handing it to someone else's cloud.

Self-host

Your machine or your server. Keep the workspace close, and choose how you reach it.

Neoism is a local-first agent framework and native workspace with a code editor, terminal, and notes.

Download the latest release for your platform, open a project, and follow the getting started guide. Connect an AI provider when you want to use the agent.

Yes. Neoism is free and open source. Its source code is available under the MIT License. AI usage costs and subscription terms are determined by your provider; Neoism does not add extra AI billing.

Choose models from the providers you connect in Neoism. You can also use compatible local models through a configured custom provider. Available models depend on the connection and provider; see the provider documentation for setup.

For supported connections, you can sign in with OAuth. Whether your subscription covers a particular model or usage depends on the provider and plan. Not every subscription works with every connection; other providers may require an API key.

Your workspace and conversations are stored on your machine or the host you select. Choosing a cloud AI provider sends the prompt and included context to that provider, and external tool connections can receive data you authorize. Where data goes depends on the providers, tools, and host you choose.

Yes. You can share a workspace with authorized clients through your own reachable host, or self-host on your server with Docker. This is not an anonymous public workspace. Read the deployment and security guides before connecting clients.

Read the code, make it yours, or contribute.