pkg.soopen package index

brew / rank 1873

Install jless with Homebrew, apk, MacPorts, Nix, pacman, zypper

Command-line pager for JSON data. Version 0.9.0 via Homebrew; verified from local package data. Also installable with nix: nix profile install nixpkgs#jless.

Install commandSecurity notes

install

Additional install commands

macOS

Homebrewverified · 100%
brew install jless

local Homebrew formula metadata

MacPortsverified · 94%
sudo port install jless

MacPorts ports tree · textproc/jless/Portfile · source: api.github.com

Linux

Alpine Linux apkverified · 92%
sudo apk add jless

Alpine Linux edge package indexes · jless · source: dl-cdn.alpinelinux.org

Nixverified · 92%
nix profile install nixpkgs#jless

nixpkgs package indexes · pkgs/by-name/jl/jless/package.nix · source: api.github.com

Arch Linux pacmanverified · 92%
sudo pacman -S jless

Arch Linux sync databases · jless · source: geo.mirror.pkgbuild.com

openSUSE zypperverified · 92%
sudo zypper install jless

openSUSE Tumbleweed package metadata · jless · source: download.opensuse.org

overview

Package summary

Command-line pager for JSON data

Commands and aliases

  • jless

history

Project history and usage

`jless` is a Rust command-line viewer for JSON data. Its README positions it as a replacement for combinations of `less`, `jq`, `cat`, and an editor when the task is reading, exploring, and searching JSON at the terminal.

Project history

The GitHub repository was created in April 2021. The project developed as a standalone binary with a dedicated site at jless.io and a mascot/logo identity, while its user guide expanded beyond simple viewing into navigation, search, copying, printing, YAML handling, and newline-delimited JSON support.

The release stream visible in the repository tags includes 0.7.x through 0.9.0, with the 0.9.0 GitHub release adding line numbers, deeper collapse and expand commands, print commands, and search/scrolling fixes.

Adoption history

The input package metadata records `jless` in Homebrew, MacPorts, Nix, apk, pacman, and zypper. The project README also lists Homebrew, MacPorts, Arch, Void, NetBSD, FreeBSD, Cargo, and prebuilt release binaries, showing the package fits the common 'single fast CLI binary' distribution pattern.

How it is used

`jless` reads JSON from files or standard input, including data piped from APIs, `jq`, or log streams. It focuses on interactive exploration: users expand and collapse objects, move with vim-inspired commands, search across pretty-formatted data, copy JSON paths or values, and switch between data and line display modes.

The user guide also documents YAML input and newline-delimited JSON, which makes the tool useful for structured logs and command-line data inspection beyond one-off pretty printing.

Why package nerds care

`jless` occupies a recognizable niche in the terminal data-toolchain: it is less a transformer like `jq` and more an interactive pager specialized for structured data. That makes it attractive for package collections because it pairs well with curl, `jq`, logs, and API debugging without requiring a language runtime at use time.

Timeline

  • 2021: The GitHub repository is created.
  • 2023: Release v0.9.0 adds line numbers, print commands, deeper collapse and expand commands, and several interaction fixes.
  • 2023: The README documents distribution through multiple OS package managers plus Cargo and prebuilt binaries.

Related projects

  • The README explicitly names `less`, `jq`, `cat`, and editors as tools `jless` can replace for viewing JSON. The user guide also documents interoperability with `jq` output and refers to the Rust regex engine used for searching.

Sources

  • Project README, jless user guide, GitHub repository metadata, GitHub release metadata, and Homebrew formula metadata.

security posture

Risk level: green

narrow executable package without higher-risk signals.

Risk classifier

green risk · low confidence · appliance

Why

  • narrow executable package without higher-risk signals

Signals

  • metadata:no-higher-risk-signals

Install behavior

  • No Homebrew bottle metadata was recorded.

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

CommandKindExposureNote
jlessexecutableindexed executableDiscovered from the local executable index.

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 generated2026-08-03
manager version0.9.0
manager updated
local dataunknown
upstreamnot available
latest detectednot detected
  • okNo freshness warnings were generated.

install metadata

Package metadata

Package keybrew:jless
Version0.9.0
Package managerHomebrew
Homepagehttps://jless.io/
Repositoryhttps://github.com/PaulJuliusMartinez/jless
Bottlenot recorded
Servicenone declared

source database matches

Other package-manager records

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

Nix95%

jless

nix profile install nixpkgs#jless
  • normalized package name match
  • Matched by: Jless
nixpkgs package indexes · api.github.com · nixpkgs package indexes: pkgs/by-name/jl/jless/package.nix from https://api.github.com/repos/NixOS/nixpkgs/git/trees/master?recursive=1
apk95%

jless 0.9.0-r0

command-line pager for JSON data

https://pauljuliusmartinez.github.io/

sudo apk add jless
  • License: MIT
  • Architecture: x86_64
  • Source Package: jless
  • 1 dependencies
  • 1 provides
  • normalized package name match
  • Matched by: Jless
Alpine Linux edge package indexes · dl-cdn.alpinelinux.org · Alpine Linux edge package indexes: jless from https://dl-cdn.alpinelinux.org/alpine/edge/community/x86_64/APKINDEX.tar.gz
pacman95%

jless 0.9.0-3

A command-line pager for JSON data

https://github.com/PaulJuliusMartinez/jless

sudo pacman -S jless
  • License: MIT
  • Architecture: x86_64
  • 4 dependencies
  • normalized package name match
  • Matched by: Jless
Arch Linux sync databases · geo.mirror.pkgbuild.com · Arch Linux sync databases: jless from https://geo.mirror.pkgbuild.com/extra/os/x86_64/extra.db.tar.gz
zypper95%

jless 0.9.0-1.10

Pager for JSON (or YAML) data

https://jless.io/

sudo zypper install jless
  • License: MIT
  • Category: Productivity/Text/Utilities
  • Architecture: x86_64
  • Source Package: jless
  • 4 dependencies
  • 1 provides
  • normalized package name match
  • Matched by: Jless
openSUSE Tumbleweed package metadata · download.opensuse.org · openSUSE Tumbleweed package metadata: jless from https://download.opensuse.org/tumbleweed/repo/oss/repodata/50b07339cb64c8ed4091bdbabddadc1ff5737b090e478818a195b40d8a3292861a879139b4a3987c31109699fde9fbf4a716367ddf4eef77da75f96e3193d6ed-primary.xml.zst
MacPorts95%

jless

sudo port install jless
  • normalized package name match
  • Matched by: Jless
MacPorts ports tree · api.github.com · MacPorts ports tree: textproc/jless/Portfile from https://api.github.com/repos/macports/macports-ports/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.

Used sources

  • Geiger risk classifier
  • cross-ecosystem install command graph
  • curated package history
  • external package-manager database matches
  • pkg.so package database
  • pkgdb category and tag curation