install

Additional install commands

macOS

Homebrewverified · 100%

brew install ssh3

local Homebrew formula metadata

MacPortsverified · 94%

sudo port install ssh3

MacPorts ports tree · net/ssh3/Portfile · source: api.github.com

Windows

Scoopverified · 92%

scoop install main/ssh3

Scoop official bucket manifest trees · bucket/ssh3.json · source: api.github.com

overview

Package summary

Faster and richer secure shell using HTTP/3

Project links

Commands and aliases

ssh3
ssh3-server

history

Project history and usage

SSH3 is an experimental secure-shell implementation and research prototype that maps SSH connection semantics onto HTTP/3, QUIC, TLS 1.3, and HTTP authorization mechanisms. Its appeal in package-manager culture is that it lets developers install and test a speculative next-generation remote-login protocol with familiar `ssh3` and `ssh3-server` commands.

Project history

The project comes from research by Francois Michel and Olivier Bonaventure. The arXiv paper 'Towards SSH3: how HTTP/3 improves secure shells' was submitted on 12 December 2023, and the repository README says the work was proposed as an Internet-Draft later renamed 'Remote Terminals over HTTP/3'.

Adoption history

SSH3 is intentionally presented as experimental and not yet appropriate for production systems without further review. Its packaging in Homebrew, MacPorts, and Scoop reflects early-adopter interest rather than mature infrastructure adoption.

How it is used

The official README documents installation with `go install github.com/francoismichel/ssh3/cmd/...@latest`, a client named `ssh3`, and a server named `ssh3-server`. It reuses familiar SSH concepts such as `~/.ssh/authorized_keys`, `~/.ssh/config`, identity files, agent use, and proxy jumps while adding HTTP/3-specific ideas such as URL paths, X.509 certificates, OpenID Connect, and UDP forwarding.

Why package nerds care

Package nerds care because SSH3 is a rare example of a research protocol that is immediately packaged as a CLI for hands-on testing. It is useful for comparing old SSH assumptions with modern transport and identity plumbing, while its experimental status keeps it in the sandbox/lab category.

Timeline

2023: arXiv paper 'Towards SSH3: how HTTP/3 improves secure shells' submitted on 12 December 2023.
2023: The project README describes SSH3 as research work proposed as an Internet-Draft.
2026: The Datatracker page shows the renamed Remote Terminals over HTTP/3 draft as expired/no longer active.

Related projects

SSH3 is related to OpenSSH, QUIC, HTTP/3, TLS 1.3, OpenID Connect, quic-go, and the IETF Remote Terminals over HTTP/3 draft.

Sources

https://arxiv.org/abs/2312.08396
https://datatracker.ietf.org/doc/draft-michel-remote-terminal-http3/
https://github.com/francoismichel/ssh3#readme
source_facts.package-manager

security posture

Risk level: yellow

broad file, network, media, or database tool signal. generalized runtime or code generation signal.

Risk classifier

yellow risk · medium confidence · runtime

Why

broad file, network, media, or database tool signal
generalized runtime or code generation signal

Signals

text:http,ssh,server
text:shell

Install behavior

No Homebrew post-install hook is recorded in formula metadata.
Homebrew bottle metadata is available for 10 platform targets.
Build metadata lists 1 build dependencies.

Recommended review

Before unattended agent use, check whether the tool reads plaintext credentials, writes remote state, publishes artifacts, or shells out to plugins.

local files

Configuration and credential file locations

These source-backed paths show where this package keeps local settings or durable credentials. Automic Vault can use them as review targets for secret scanning, migration, and command approval.

Configuration files

Config paths the tool may read or write during local use.

Unix: ~/.ssh/config

Credential files

Credential-bearing paths to review before unattended agent runs.

Unix: ~/.ssh/authorized_keys~/.ssh3/authorized_identities

executables

Installed executables

Command	Kind	Exposure	Note
`ssh3`	cli	global executable
`ssh3-server`	cli	global executable

freshness

Version and freshness

These signals separate page generation age, package-manager activity, and upstream release comparison. Version lag is warned only when an evidence URL and comparable versions are present.

page generated2026-07-08

manager version0.1.7

manager updated2026-06-15

local dataok

upstreamcurrent

latest detectedv0.1.7

https://github.com/francoismichel/ssh3

okNo freshness warnings were generated.

install metadata

Package metadata

Package key	brew:ssh3
Version	0.1.7
Package manager	Homebrew
Package manager page	https://formulae.brew.sh/formula/ssh3
Homepage	https://arxiv.org/abs/2312.08396
Repository	https://github.com/francoismichel/ssh3
Upstream docs	https://arxiv.org/abs/2312.08396
License	Apache-2.0
Source archive	https://github.com/francoismichel/ssh3/archive/refs/tags/v0.1.7.tar.gz
Last updated	2026-06-15T10:21:20-04:00
Pulse	updated
Build dependencies	go
Uses from macOS	libxcrypt
Bottle	available (on arm64_linux, arm64_monterey, arm64_sequoia, arm64_sonoma, arm64_tahoe, arm64_ventura, monterey, sonoma, ventura, x86_64_linux)
Homebrew post-install	not defined
Service	none declared

registry facts

Source database details

Source Database	Homebrew formula API
Tap	homebrew/core
Full Name	ssh3
Version Scheme	0
Revision	0
Head Version	HEAD
Bottle Stable Root URL	https://ghcr.io/v2/homebrew/core
Deprecated	no
Disabled	no
Keg Only	no
URL Keys	head stable

source database matches

Other package-manager records

Matches are pulled from external package-manager indexes and kept separate from local Automic Vault package links.

MacPorts95%

ssh3

sudo port install ssh3

normalized package name match
Matched by: Ssh3

MacPorts ports tree · api.github.com · MacPorts ports tree: net/ssh3/Portfile from https://api.github.com/repos/macports/macports-ports/git/trees/master?recursive=1

Scoop95%

main/ssh3

scoop install main/ssh3

normalized package name match
Matched by: Ssh3

Scoop official bucket manifest trees · api.github.com · Scoop official bucket manifest trees: bucket/ssh3.json from https://api.github.com/repos/ScoopInstaller/Main/git/trees/master?recursive=1

package graph

Links come from deterministic package relationships, av.db category and tag curation, ecosystem matches, and package hub membership.

source trail

Generated from repository data

This page is generated by av-web from the private package SQLite artifact built by scripts/generate-pkg-sqlite.py.

Combined YAML source

View the package source record on GitHub.

combined/ssh3.yml

Used sources

Geiger risk classifier
Nucleus package database
av.db category and tag curation
cross-ecosystem install command graph
curated configuration and credential file locations
curated package history
external package-manager database matches
package relationship graph
package version freshness
package-page enrichment

Install ssh3 with Homebrew, MacPorts, scoop