Droppen

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Your computer's AI, from your phone. Claude Code and Codex keep running on your own computers. From a browser on your phone or another device, answer their questions, steer them and open a terminal on the computer.

What you can do

• Every computer, one list. Home and work computers on one account, with every session that is waiting for an answer, has unread messages or is running in one list.
• Answer and steer. Answer the AI's questions, add a message while it works, or stop the current run if it goes the wrong way.
• Notified when a session needs you: when the AI asks a question, finishes a reply you haven't read, or fails.
• Start a session from your phone. Choose Claude Code or Codex, a computer and a folder, optionally attach a screenshot, and send.
• Terminals and files. Open a terminal on the computer, browse its folders and preview files.
• Run prompts on a schedule, for example every morning or every hour on weekdays.
• Readable while the computer is offline. Your phone can still open recent sessions; sending a message waits until the computer is back.

Droppen can also drive any agent that speaks the Agent Client Protocol.

Get Droppen

Install Droppen on the computer where Claude Code or Codex runs. Your phone and other devices need nothing installed: they open my.droppen.app in a browser.

• Mac (macOS 13 or later, Apple silicon and Intel): download the app, or take the .dmg from the latest release. To use it from your phone, sign in to Droppen from the app.

• Linux (x86_64 or aarch64), and Macs without a screen:

  curl -fsSL https://droppen.app/install.sh | sh

  To join your account in the same step, end it with | DROPPEN_CODE=<code> sh instead, using a one-time code from my.droppen.app (my devices → add a device that runs AI).

• Windows: not yet. Run it in WSL with systemd turned on, or use my.droppen.app to reach your other computers.

Installing, upgrading and uninstalling · Verify a download

Droppen can't read your code

• Local-first. The AI runs on your own computer, with your files. On one computer, Droppen needs no account and talks to no Droppen service.
• End-to-end encrypted. Encrypted on your computer and decrypted only on your devices. Droppen Hub stores only encrypted copies and Droppen relays forward only ciphertext; neither holds a key that can decrypt them.
• Only devices you approve can join. A new phone or browser joins only when a device you already have approves it.
• Open-source client. The droppen program, the Mac app, the web app and the relay are open source in this repository, and every release file carries an attestation that this repository's release workflow built it (verify a download). Droppen Hub is not open source.

Droppen is in beta: its encryption design has had internal security reviews, not an external audit. How the encryption works · Security model

For developers

• Development: what is in this repository, building from source, running the tests
• Running a relay
• Security model and the Hub API, the contract between this code and Droppen Hub
• Plugins
• Contributing · Reporting a vulnerability
• The full manual, in Chinese

Licence

Copyright (C) 2026 Kilerd.

• The applications are licensed under the GNU Affero General Public License v3.0 only (LICENSE, AGPL-3.0-only): the local program (the root crate in server-rs/), the desktop app (desktop/), the web app (web/) and the relay program (droppen-relay).
• The protocol and library crates, droppen-proto, droppen-relay-core (the library), droppen-client and droppen-devkit, and the plugin SDKs (packages/plugin-sdk, server-rs/crates/droppen-plugin-sdk) are licensed under MIT OR Apache-2.0, at your option; each has LICENSE-MIT and LICENSE-APACHE in its directory. These are the only parts of this repository the closed Hub links.

Releases carry LICENSE and THIRD_PARTY_NOTICES, which lists the licences of every dependency compiled in. Every build of the web app serves the licences of the npm packages in it at /THIRD_PARTY_NOTICES.txt (on droppen.app too), linked from the footer of its public pages.