macOS
Homebrewverified · 100%
brew install libpsllocal Homebrew formula metadata
MacPortsverified · 94%
sudo port install libpslMacPorts ports tree · net/libpsl/Portfile · source: api.github.com
brew
Install libpsl with Homebrew, apk, apt, dnf, MacPorts, Nix, pacman, zypper
C library for the Public Suffix List. Version 0.22.0 via Homebrew; verified 2026-06-25.
install
Additional install commands
Linux
Alpine Linux apkverified · 92%
sudo apk add libpslAlpine Linux edge package indexes · libpsl · source: dl-cdn.alpinelinux.org
Debian aptverified · 92%
sudo apt install libpsl-devDebian stable package indexes · libpsl-dev · source: deb.debian.org
Fedora dnfverified · 92%
sudo dnf install libpslFedora Rawhide package metadata · libpsl · source: dl.fedoraproject.org
Nixverified · 92%
nix profile install nixpkgs#libpslnixpkgs package indexes · pkgs/by-name/li/libpsl/package.nix · source: api.github.com
Arch Linux pacmanverified · 92%
sudo pacman -S libpslArch Linux sync databases · libpsl · source: geo.mirror.pkgbuild.com
openSUSE zypperverified · 92%
sudo zypper install libpsl-developenSUSE Tumbleweed package metadata · libpsl-devel · source: download.opensuse.org
overview
Package summary
C library for the Public Suffix List
Project links
Commands and aliases
- psl
- psl-make-dafsa
history
Project history and usage
libpsl is a C library for working with the Public Suffix List, the shared list used to decide where registrable domain boundaries sit. It gives native programs a fast way to answer questions that matter for cookies, certificates, domain display, and site grouping.
Project history
The library was created by Tim Ruehsen from libmget cookie code on 2014-03-19, according to the source changelog, and the public GitHub repository was created on 2014-03-20. The README describes libpsl as a C library that handles the Public Suffix List with built-in PSL data, file-loaded PSL data, DAFSA compression, thread safety, and IDNA support.
The Public Suffix List itself is a cross-vendor initiative maintained by Mozilla volunteers and registry submissions. libpsl packages that ecosystem for C consumers rather than trying to define suffix policy itself.
Adoption history
libpsl's adoption comes from web-client and network-client needs: software must avoid supercookies, reject overbroad certificate or domain assumptions, and group sites by registrable domain. The Public Suffix List page names browsers, Qt, crawler libraries, certificate-authority workflows, and security tooling as users of PSL data.
Package managers carry libpsl because many lower-level network tools need PSL behavior without embedding their own parser. Homebrew, Debian-family systems, Fedora, MacPorts, Nix, Arch, Alpine, and openSUSE all appear in the package metadata for this batch.
How it is used
Developers use libpsl through the C API to test whether a domain is a public suffix, verify cookie-domain acceptability, find public or private domain portions, or load updated PSL data. The package also ships the `psl` command and `psl-make-dafsa` for command-line inspection and compressed list generation.
Why package nerds care
libpsl is package-nerd significant because it is tiny infrastructure with security consequences. A stale or missing PSL layer can allow cookie scoping mistakes or bad domain-boundary assumptions, while a shared library lets distributions update the logic and data path centrally.
Its build and packaging details are also unusually nerdy: the README separates libpsl releases from PSL data updates, supports both autotools and Meson, and uses DAFSA compression to shrink lookup data for fast native access.
Timeline
- 2014-03-19: Source changelog says Tim Ruehsen created the library from libmget cookie code.
- 2014-03-20: The public GitHub repository was created.
- 2016-01-02: Release 0.12.0 appears in GitHub release metadata.
- 2019-04-16: Release 0.21.0 was published.
- 2026-06-24: Release 0.22.0 included portability, build, Windows, Apple ICU, and tarball-build improvements.
Related projects
- The Public Suffix List, Mozilla's PSL maintenance process, Chromium's DAFSA code, GNU Wget/libmget history, curl-like clients, browsers, crawler libraries, and certificate-authority tooling are the related ecosystem.
Sources
- https://api.github.com/repos/rockdaboot/libpsl
- https://api.github.com/repos/rockdaboot/libpsl/releases
- https://formulae.brew.sh/formula/libpsl
- https://github.com/publicsuffix/list
- https://github.com/rockdaboot/libpsl
- https://publicsuffix.org/learn/
- https://raw.githubusercontent.com/rockdaboot/libpsl/master/README.md
- https://raw.githubusercontent.com/rockdaboot/libpsl/master/src/psl.c
security posture
Risk level: green
library-like package without higher-risk signals.
Risk classifier
green risk · low confidence · appliance
Why
- library-like package without higher-risk signals
Signals
- metadata:library-like
Install behavior
- No Homebrew post-install hook is recorded in formula metadata.
- Homebrew bottle metadata is available for 6 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.
executables
Installed executables
| Command | Kind | Exposure | Note |
|---|---|---|---|
psl | cli | global executable | |
psl-make-dafsa | 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 version0.22.0
manager updated2026-06-25
local dataok
upstreamnot checked
latest detectednot detected
https://github.com/rockdaboot/libpsl
- infoNo cached GitHub release or tag data was available.https://github.com/rockdaboot/libpslnone confidence
install metadata
Package metadata
| Package key | brew:libpsl |
|---|---|
| Version | 0.22.0 |
| Package manager | Homebrew |
| Package manager page | https://formulae.brew.sh/formula/libpsl |
| Homepage | https://rockdaboot.github.io/libpsl |
| Repository | https://github.com/rockdaboot/libpsl |
| Upstream docs | https://rockdaboot.github.io/libpsl |
| License | MIT |
| Source archive | https://github.com/rockdaboot/libpsl/releases/download/0.22.0/libpsl-0.22.0.tar.gz |
| Last updated | 2026-06-25T00:40:45Z |
| Pulse | updated |
| Build dependencies | pkgconf |
| Bottle | available (on arm64_linux, arm64_sequoia, arm64_sonoma, arm64_tahoe, sonoma, 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 | libpsl |
| Version Scheme | 0 |
| Revision | 0 |
| Bottle Stable Root URL | https://ghcr.io/v2/homebrew/core |
| Deprecated | no |
| Disabled | no |
| Keg Only | no |
| URL Keys |
|
source database matches
Other package-manager records
Matches are pulled from external package-manager indexes and kept separate from local Automic Vault package links.
Debian apt95%
libpsl-dev 0.21.2-1.1+b1
Library for Public Suffix List (development headers)
https://github.com/rockdaboot/libpsl
sudo apt install libpsl-dev- Section: libdevel
- Architecture: amd64
- Source Package: libpsl
- 1 dependencies
- normalized package name match
- Matched by: Libpsl
Debian apt95%
libpsl5t64 0.21.2-1.1+b1
Library for Public Suffix List (shared libraries)
https://github.com/rockdaboot/libpsl
sudo apt install libpsl5t64- Section: libs
- Architecture: amd64
- Source Package: libpsl
- 3 dependencies
- 1 provides
- 1 optional deps
- normalized package name match
- Matched by: Libpsl
Debian apt95%
psl 0.21.2-1.1+b1
Explore the Public Suffix List
https://github.com/rockdaboot/libpsl
sudo apt install psl- Section: net
- Architecture: amd64
- Source Package: libpsl
- 2 dependencies
- normalized package name match
- Matched by: Libpsl
Debian apt95%
psl-make-dafsa 0.21.2-1.1
Create a binary DAFSA from a Public Suffix List
https://github.com/rockdaboot/libpsl
sudo apt install psl-make-dafsa- Section: net
- Architecture: all
- Source Package: libpsl
- 1 dependencies
- normalized package name match
- Matched by: Libpsl
Nix95%
libpsl
nix profile install nixpkgs#libpsl- normalized package name match
- Matched by: Libpsl
Ubuntu apt95%
libpsl-dev 0.21.2-1.1build1
Library for Public Suffix List (development headers)
https://github.com/rockdaboot/libpsl
sudo apt install libpsl-dev- Section: libdevel
- Architecture: amd64
- Source Package: libpsl
- 1 dependencies
- normalized package name match
- Matched by: Libpsl
Ubuntu apt95%
libpsl5t64 0.21.2-1.1build1
Library for Public Suffix List (shared libraries)
https://github.com/rockdaboot/libpsl
sudo apt install libpsl5t64- Section: libs
- Architecture: amd64
- Source Package: libpsl
- 3 dependencies
- 1 provides
- 1 optional deps
- normalized package name match
- Matched by: Libpsl
Ubuntu apt95%
psl 0.21.2-1.1build1
Explore the Public Suffix List
https://github.com/rockdaboot/libpsl
sudo apt install psl- Section: universe/net
- Architecture: amd64
- Source Package: libpsl
- 2 dependencies
- normalized package name match
- Matched by: Libpsl
Ubuntu apt95%
psl-make-dafsa 0.21.2-1.1build1
Create a binary DAFSA from a Public Suffix List
https://github.com/rockdaboot/libpsl
sudo apt install psl-make-dafsa- Section: universe/net
- Architecture: all
- Source Package: libpsl
- 1 dependencies
- normalized package name match
- Matched by: Libpsl
apk95%
libpsl 0.21.5-r3
C library for the Publix Suffix List
https://rockdaboot.github.io/libpsl
sudo apk add libpsl- License: MIT
- Architecture: x86_64
- Source Package: libpsl
- 1 dependencies
- 1 provides
- normalized package name match
- Matched by: Libpsl
apk95%
libpsl-dev 0.21.5-r3
C library for the Publix Suffix List (development files)
https://rockdaboot.github.io/libpsl
sudo apk add libpsl-dev- License: MIT
- Architecture: x86_64
- Source Package: libpsl
- 1 dependencies
- 1 provides
- normalized package name match
- Matched by: Libpsl
apk95%
libpsl-doc 0.21.5-r3
C library for the Publix Suffix List (documentation)
https://rockdaboot.github.io/libpsl
sudo apk add libpsl-doc- License: MIT
- Architecture: x86_64
- Source Package: libpsl
- normalized package name match
- Matched by: Libpsl
apk95%
libpsl-static 0.21.5-r3
C library for the Publix Suffix List (static library)
https://rockdaboot.github.io/libpsl
sudo apk add libpsl-static- License: MIT
- Architecture: x86_64
- Source Package: libpsl
- normalized package name match
- Matched by: Libpsl
apk95%
libpsl-utils 0.21.5-r3
C library for the Publix Suffix List (utils)
https://rockdaboot.github.io/libpsl
sudo apk add libpsl-utils- License: MIT
- Architecture: x86_64
- Source Package: libpsl
- 1 dependencies
- 1 provides
- normalized package name match
- Matched by: Libpsl
dnf95%
libpsl 0.21.5-7.fc44
C library for the Publix Suffix List
https://rockdaboot.github.io/libpsl
sudo dnf install libpsl- License: MIT
- Category: Unspecified
- Architecture: i686
- Source Package: libpsl
- 5 dependencies
- 2 provides
- normalized package name match
- Matched by: Libpsl
dnf95%
libpsl-devel 0.21.5-7.fc44
Development files for libpsl
https://rockdaboot.github.io/libpsl
sudo dnf install libpsl-devel- License: MIT
- Category: Unspecified
- Architecture: i686
- Source Package: libpsl
- 4 dependencies
- 2 provides
- normalized package name match
- Matched by: Libpsl
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.
Used sources
- Geiger risk classifier
- Nucleus package database
- av.db category and tag curation
- cross-ecosystem install command graph
- curated package history
- external package-manager database matches
- package relationship graph
- package version freshness
- package-page enrichment