Lagent provides a lightweight framework for building agents powered by large language models.
Open source
24 alternativesConnectOnion
ConnectOnion provides command line tools for building and running AI agents.
About ConnectOnion
ConnectOnion is an open-source command line tool for building and running AI agents. Its main command, co, gives an agent access to the accounts and tools it works with, including Gmail and Outlook, a logged-in browser, local files, chat apps and other agents. It is installed with pip and requires Python 3.10 or newer.
After setup with co init, you authenticate an account such as Google or Microsoft, then run commands like co gmail or co outlook. The project prefers a command line over a server or a plugin per tool, because coding agents such as Claude Code, Codex and Cursor can already run shell commands. co commands lists everything available, and --help documents each tool as the agent needs it.
A separate preview feature, co rem, connects context from mail and coding sessions into linked local Markdown pages about the people, projects and skills involved. Those pages stay on your machine and can be read by you and your agents. co rem is opt-in and in preview; daily scheduling currently requires macOS, and selected source content is sent to a configured model during investigation.
Key features
- One
cocommand line to build and run AI agents - Connects Gmail, Outlook, browser, files, chat apps and other agents
- Installed with pip; requires Python 3.10 or newer
co commandslists all commands;--helpdocuments each toolco rembuilds linked local Markdown pages from mail and coding sessions- Open-source repository hosted on GitHub
Best for: Developers and technical users who want to give AI agents access to mail, browser, files, chat apps and other agents through a single command line.
Good for
- Open source and installable with pip for Python 3.10+
- Works with existing coding agents that can run shell commands
- No server to start or client to configure inside the agent
- `co rem` keeps context in local Markdown pages on your machine
Watch out for
- `co rem` is an opt-in preview feature, not a finished release
- Daily scheduling for `co rem` currently requires macOS
- Selected source content is sent to a configured model during investigation
ConnectOnion at a glance
- Category
- AI & Machine Learning › AI Agent Frameworks
- Type
- Open-source project
- Pricing
- Not confirmed. Check the site
- Open source
- Yes · Source code
- Language
- English
- Last checked
- Oct 5, 2026 · Online when checked
- Listed
- Oct 5, 2026
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ConnectOnion FAQ
What is ConnectOnion?
It is an open-source command line tool for building and running AI agents. Its `co` command gives an agent access to mail, calendar, browser, files, chat apps and other agents.
How do I install ConnectOnion?
Install it with `pip install connectonion` on Python 3.10 or newer, then run `co init` to set up your identity and keys. Authentication follows with `co auth microsoft` or `co auth google`.
What is `co rem`?
`co rem` connects context from your mail and coding sessions into linked local Markdown pages about people, projects and skills, keeping that context on your machine for you and your agents. It is in an opt-in preview.
Is ConnectOnion free?
The repository is open source, but the project does not state pricing on its homepage. It notes that selected source content is sent to a configured model and that model costs apply.
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