Download

Okeanos runs on Windows 10/11 and on all major Linux distributions (x64). Install it, start it and choose Start trial or Enter licence key.

Okeanos AI plugin

An AI assistant in the Okeanos sidebar, with the provider you choose: Claude, OpenAI, Google Gemini, Mistral, DeepSeek, xAI Grok, Groq, OpenRouter, a local model (Ollama, LM Studio, llama.cpp, vLLM, LocalAI, Jan) or any OpenAI-compatible server. Claude Desktop, Claude Code, Cursor, VS Code and other MCP apps can use Okeanos through it as well.

Download okeanos-ai-<version>.okplugin from the list above (one file for Windows and Linux). In Okeanos open Settings → Plugins → Install plugin and choose the file. Okeanos checks the file hashes and the signature, then asks which permissions the plugin may use; every command it wants to run on a server needs your approval.

Requests go straight from your computer to the AI provider you choose, with your own API key and under that provider's terms; they never pass through our servers.

Linux

Install from our package repository and your normal system updates keep Okeanos current (the packages set the repository up by themselves). All repositories are signed with the same key, fingerprint E338C236C1FA3314CB31C4A4A9BE817D1114EA4E. For the beta channel replace stable with beta (and okeanos.repo with okeanos-beta.repo).

Debian 12+, Ubuntu 22.04+, Linux Mint, Pop!_OS

curl -fsSL https://okeanos.tools/apt/okeanos.gpg | sudo tee /usr/share/keyrings/okeanos.gpg >/dev/null
echo "deb [signed-by=/usr/share/keyrings/okeanos.gpg] https://okeanos.tools/apt stable main" | sudo tee /etc/apt/sources.list.d/okeanos.list
sudo apt update && sudo apt install okeanos

Fedora, RHEL / AlmaLinux / Rocky Linux 9+

sudo curl -fsSL https://okeanos.tools/rpm/okeanos.repo -o /etc/yum.repos.d/okeanos.repo
sudo dnf install okeanos

openSUSE Leap 16.0, Tumbleweed

sudo zypper addrepo https://okeanos.tools/rpm/okeanos.repo
sudo zypper --gpg-auto-import-keys refresh okeanos
sudo zypper install okeanos

Arch Linux, Manjaro, EndeavourOS

curl -fsSL https://okeanos.tools/arch/okeanos.asc | sudo pacman-key --add -
sudo pacman-key --lsign-key E338C236C1FA3314CB31C4A4A9BE817D1114EA4E
sudo tee -a /etc/pacman.conf <<'EOF'

[okeanos]
Server = https://okeanos.tools/arch/stable/$arch
EOF
sudo pacman -Syu okeanos

Tested on Debian 12, Ubuntu 22.04 and 24.04, Fedora, Rocky Linux 9, openSUSE Leap 16.0 and Tumbleweed, and Arch. The rpm needs rpm 4.13 or newer (any current Fedora, RHEL 8+ family or openSUSE).

Any other distribution

The AppImage runs on distributions with glibc 2.34 or newer: chmod +x Okeanos-*-x86_64.AppImage and start it; Okeanos updates it in place. The tar.gz is for manual installs: unpack it anywhere and run okeanos; updates are offered as a download.

Verify a download

Every file is listed in a release manifest signed with our offline release key (Ed25519). Okeanos checks size, SHA-256 and the signature itself before installing an update. To check a file by hand:

# Windows (PowerShell)
Get-FileHash .\Okeanos-…-windows-x64-setup.exe -Algorithm SHA256
# Linux
sha256sum okeanos_…_amd64.deb      # or the .rpm, .pkg.tar.zst, .AppImage, .tar.gz

Release public key (base64, Ed25519): dKckvCmPYugllcCOmxzv5yF+q6Ds37Si2J0W3yd+Z9Q=

Made with Slint

The Okeanos interface is built with Slint, a toolkit for native user interfaces. Okeanos uses Slint under its royalty-free licence; thanks to the Slint team.

Third-party licences are listed in THIRD-PARTY-NOTICES.txt, which is installed with Okeanos.