Command-line tools: H

• h2

  Java SQL database

• h3

  Hexagonal hierarchical geospatial indexing system

• hackrf

  Low cost software radio platform

• hadolint

  Smarter Dockerfile linter to validate best practices

• hadoop

  Framework for distributed processing of large data sets

• hamlib

  Ham radio control libraries

• handbrake

  Open-source video transcoder available for Linux, Mac, and Windows

• haproxy

  Reliable, high performance TCP/HTTP load balancer

• harbor-cli

  CLI for Harbor container registry

• harfbuzz

  OpenType text shaping engine

• harlequin

  Easy, fast, and beautiful database client for the terminal

• harper

  Grammar Checker for Developers

• hashcat

  World's fastest and most advanced password recovery utility

• hashlink

  Virtual machine for Haxe

• haskell-language-server

  Integration point for ghcide and haskell-ide-engine. One IDE to rule them all

• haskell-stack

  Cross-platform program for developing Haskell projects

• hatch

  Modern, extensible Python project management

• hawkeye

  Simple license header checker and formatter, in multiple distribution forms

• haxe

  Multi-platform programming language

• hbase

  Hadoop database: a distributed, scalable, big data store

• hcl2json

  Convert HCL2 to JSON

• hcledit

  Command-line editor for HCL

• hcloud

  Command-line interface for Hetzner Cloud

• hcxtools

  Utils for conversion of cap/pcap/pcapng WiFi dump files

• hdf5

  File format designed to store large amounts of data

• hdf5-mpi

  File format designed to store large amounts of data

• hdrhistogram_c

  C port of the HdrHistogram

• heimdal

  Free Kerberos 5 implementation

• helix

  Post-modern modal text editor

• helix-db

  Open-source graph-vector database built from scratch in Rust

• hello

  Program providing model for GNU coding standards and practices

• helm

  Kubernetes package manager

• helm-docs

  Tool for automatically generating markdown documentation for helm charts

• helm-ls

  Language server for Helm

• helm@3

  Kubernetes package manager

• helmfile

  Deploy Kubernetes Helm Charts

• helmify

  Create Helm chart from Kubernetes yaml

• help2man

  Automatically generate simple man pages

• herdr

  Agent multiplexer that lives in your terminal

• hermes-agent

  Self-improving AI agent that creates skills from experience

• hermit

  Manages isolated, self-bootstrapping sets of tools in software projects

• heroku

  CLI for Heroku

• hexedit

  View and edit files in hexadecimal or ASCII

• hexo

  Fast, simple & powerful blog framework

• hexyl

  Command-line hex viewer

• hey

  HTTP load generator, ApacheBench (ab) replacement

• hf

  Client library for huggingface.co hub

• hf-mcp-server

  MCP Server for Hugging Face

• hf-mount

  Mount Hugging Face Buckets and repos as local filesystems

• hfsutils

  Tools for reading and writing Macintosh volumes

• hidapi

  Library for communicating with USB and Bluetooth HID devices

• highlight

  Convert source code to formatted text with syntax highlighting

• highs

  Linear optimization software

• highway

  Performance-portable, length-agnostic SIMD with runtime dispatch

• himalaya

  CLI email client written in Rust

• hiredis

  Minimalistic client for Redis

• hive

  Hadoop-based data summarization, query, and analysis

• hivemind

  Process manager for Procfile-based applications

• hk

  Git hook and pre-commit lint manager

• hl

  Fast and powerful log viewer and processor

• hledger

  Easy plain text accounting with command-line, terminal and web UIs

• hlint

  Haskell source code suggestions

• hmmer

  Build profile HMMs and scan against sequence databases

• homeassistant-cli

  Command-line utility for Home Assistant

• homebank

  Manage your personal accounts at home

• hookdeck

  Forward webhook events from Hookdeck to a local server

• hopenpgp-tools

  Command-line tools for OpenPGP-related operations

• hostess

  Idempotent command-line utility for managing your /etc/hosts file

• howdoi

  Instant coding answers via the command-line

• hstr

  Bash and zsh history suggest box

• html2markdown

  Convert HTML to Markdown

• html2text

  Advanced HTML-to-text converter

• htmldoc

  Convert HTML to PDF or PostScript

• htmlq

  Uses CSS selectors to extract bits content from HTML files

• htop

  Improved top (interactive process viewer)

• htslib

  C library for high-throughput sequencing data formats

• http-prompt

  Interactive command-line HTTP client with autocomplete and syntax highlighting

• http-server

  Simple zero-configuration command-line HTTP server

• httpd

  Apache HTTP server

• httpie

  User-friendly cURL replacement (command-line HTTP client)

• httping

  Ping-like tool for HTTP requests

• httptap

  HTTP request visualizer with phase-by-phase timing breakdown

• httpx

  Fast and multi-purpose HTTP toolkit

• httrack

  Website copier/offline browser

• hub

  Add GitHub support to git on the command-line

• hubble

  Network, Service & Security Observability for Kubernetes using eBPF

• hugo

  Configurable static site generator

• hunk

  Review-first terminal diff viewer for agent-authored changesets

• hunspell

  Spell checker and morphological analyzer

• hurl

  Run and Test HTTP Requests with plain text and curl

• hwatch

  Modern alternative to the watch command

• hwloc

  Portable abstraction of the hierarchical topology of modern architectures

• hydra

  Network logon cracker which supports many services

• hyfetch

  Fast, highly customisable system info script with LGBTQ+ pride flags

• hyperfine

  Command-line benchmarking tool

• hysteria

  Feature-packed proxy & relay tool optimized for lossy, unstable connections

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