#1616th of 22 in Assistants

leon

Self-hosted personal assistant with tools, layered memory and agent-style execution

Stars: 17.6k
License: MIT
Last commit: Oct 2026
Language: TypeScript

Missed the latest GitHub check; these facts may be older.

Overview

Leon is a Node.js personal assistant that runs locally on Linux, macOS or Windows and serves a web app on port 5366. It runs in smart, controlled (deterministic native skills) or agent (step-by-step planning) mode, with tools, layered memory, and desktop and browser computer use. The 2.0 Developer Preview is on the develop branch; the legacy version is on master.

Who it is for: Developers wanting a self-hosted, extensible personal assistant to tinker with

Strengths

Three execution modes: smart, controlled (deterministic skills), and agent (step-by-step planning)
Layered memory for durable preferences, daily context and recent discussion
Supports both local and remote AI providers
Extensible through native skills, SKILL.md agent skills, toolkits and bridges

Weaknesses

2.0 is a Developer Preview; new documentation is not ready
Public docs site mostly describes the legacy architecture
Installs from source with pnpm; no Docker or release builds
Few contributors; developed mostly in spare time, so progress is uneven

What it needs

Needs Node.js >= 24, pnpm, Python (bridges and tcp_server)
Models: local models, remote AI providers
port 5366

Also in Assistants

See all 22

Also in Assistants
Rank	Project	Score
1	OpenClawPersonal AI assistant reachable through Discord, Slack, Telegram, WhatsApp and more392k starsMIT	85 out of 100
2	nanobotSelf-hosted Python personal agent with WebUI, TUI and chat-app channels49k starsMIT	84 out of 100
3	openhumanRust agent harness with desktop app, built-in memory and embeddable library42k starsGPL-3.0	84 out of 100
#4	career-opsJob-search agent that scores postings against your CV and drafts applications74.6k starsMIT	77 out of 100
#5	ZeroClawSingle Rust binary agent runtime with 30+ channels and hardware access33k starsApache-2.0	77 out of 100

How to choose

Check which channels it supports today (WhatsApp, Telegram, Slack, Discord, email) and whether each needs a paid API.
Look at how memory is stored and whether you can inspect or wipe it.
Actions need credentials; prefer assistants that scope them per tool.

Health

Releases: Not checked
Top contributor: Not checked
Security advisories: Not checked
Package advisories: Not checked
OpenSSF Scorecard: Not checked

Not read for this project yet: each refresh reads the facts of a few projects. Bots and coding-agent accounts are left out of the commit counts. Not part of the score: how we check.

License in plain words

MIT Permissive

Use it at work: Yes
Change it and rebrand it: Yes
Sell it or host it for others: Yes

Your part: Keep the copyright and license notice in copies you ship.

A plain summary, not legal advice. Read the license on GitHub ↗ (opens in a new tab)

#16 of 22 in Assistants on Archestack, as of 15 Oct 2026.

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