| jama | JAMA/C++ Linear Algebra Package: Java-like matrix C++ templates |
| jq | Lightweight and flexible command-line JSON processor |
| hue-cli | Command line interface for controlling Philips Hue system's lights and bridge |
| hydra-ant-logger | |
| httpfs2 | FUSE-based HTTP filesystem for Linux |
| html2text | Convert HTML to plain text |
| imagemagickBig | Software suite to create, edit, compose, or convert bitmap images |
| icbm3d | 3D vector-based clone of the atari game Missile Command |
| indilib | Implementation of the INDI protocol for POSIX operating systems |
| ihp-new | Project generator for the IHP (Integrated Haskell Platform) web framework |
| iceauth | libICE authority file utility |
| jaxodraw | Java program for drawing Feynman diagrams |
| hii | A file-based IRC client inspired by ii |
| inormalize | Program to normalize intensity of MINC files |
| ico | Simple animation program that may be used for testing various X11 operations and extensions |
| ipopt | Software package for large-scale nonlinear optimization |
| imgcat | It's like cat, but for images |
| icon-library | Symbolic icons for your apps |
| hicolor-icon-theme | Default fallback theme used by implementations of the icon theme specification |
| isc-cron | Daemon for running commands at specific times |
| jekyll | Blog-aware, static site generator, written in Ruby |
| indi-full | Implementation of the INDI protocol for POSIX operating systems |
| hoppet | Higher Order Perturbative Parton Evolution Toolkit |
| json-glib | Library providing (de)serialization support for the JavaScript Object Notation (JSON) format |
| hexedit | View and edit files in hexadecimal or in ASCII |
| inxi | Full featured CLI system information tool |
| hp2p | MPI based benchmark for network diagnostics |
| imlib2Full | Image manipulation library |
| hitori | GTK application to generate and let you play games of Hitori |
| imlib2 | Image manipulation library |
| irony-server | Server part of irony |
| hevea | Quite complete and fast LATEX to HTML translator |
| iodine | Tool to tunnel IPv4 data through a DNS server |
| internalallthethings | Active Directory and Internal Pentest Cheatsheets |
| hblock | Improve your security and privacy by blocking ads, tracking and malware domains |
| imapsync | Mail folder synchronizer between IMAP servers |
| host | Domain name server |
| hubicfuse | FUSE-based filesystem to access hubic cloud storage |
| httrack | Easy-to-use offline browser / website mirroring utility |
| jmtpfs | FUSE filesystem for MTP devices like Android phones |
| jabcode | High-capacity 2D color bar code (library) |
| jboss | Open Source J2EE application server |
| imlib2-nox | Image manipulation library |
| iniparser | Free standalone ini file parsing library |
| i3-rounded | Fork of i3-gaps that adds rounding to window corners |
| hdf5-fortran | Data model, library, and file format for storing and managing data |
| hnswlib | Header-only C++/python library for fast approximate nearest neighbors |
| hepmc2 | HepMC package is an object oriented event record written in C++ for High Energy Physics Monte Carlo Generators |
| hyperion-ng | Opensource Bias or Ambient Lighting implementation |
| jsonrpc-glib | Library to communicate using the JSON-RPC 2.0 specification |
| heptagon | Compiler for the Heptagon/BZR synchronous programming language |
| ioquake3 | Fast-paced 3D first-person shooter, a community effort to continue supporting/developing id's Quake III Arena |
| health | Health tracking app for the GNOME desktop |
| hss | A SSH helper that uses regex and fancy expansion to dynamically manage SSH shortcuts.
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| jq-zsh-plugin | Interactively build jq expressions in Zsh |
| ipbt | High-tech ttyrec player for Unix |
| hdf5-cpp | Data model, library, and file format for storing and managing data |
| imagemagick | Software suite to create, edit, compose, or convert bitmap images |
| heaptrack | Heap memory profiler for Linux |
| hpl | Portable Implementation of the Linpack Benchmark for Distributed-Memory Computers |
| hdfview | Visual tool for browsing and editing HDF4 and HDF5 files |
| imgp | High-performance CLI batch image resizer & rotator |
| hsqldb | Relational, embedable database management system written in Java and a set of related tools |
| homesick | Your home directory is your castle. Don't leave your dotfiles behind |
| itk | Insight Segmentation and Registration Toolkit |
| jnettop | Network traffic visualizer |
| ideviceinstaller | List/modify installed apps of iOS devices |
| hexapdf | Versatile PDF creation and manipulation library |
| jdom | Java-based solution for accessing, manipulating, and outputting XML data from Java code |
| jboss_mysql_jdbc | MySQL Connector/J |
| html-proofer | Tool to validate HTML files |
| ictree | Like tree but interactive |
| iagno | Computer version of the game Reversi, more popularly called Othello |
| icecast | Server software for streaming multimedia |
| iperf3 | Tool to measure IP bandwidth using UDP or TCP |
| hivex | Windows registry hive extraction library |
| intltool | Translation helper tool |
| highfive | Header-only C++ HDF5 interface |
| hdf5-fortran-mpi | Data model, library, and file format for storing and managing data |
| hostmux | Small wrapper script for tmux to easily connect to a series of hosts via ssh and open a split pane for each of the hosts |
| itk_5 | Insight Segmentation and Registration Toolkit |
| igv | Visualization tool for interactive exploration of genomic datasets |
| hdf5 | Data model, library, and file format for storing and managing data |
| honcho | Python clone of Foreman, a tool for managing Procfile-based applications |
| isync | Free IMAP and MailDir mailbox synchronizer |
| imapfilter | Mail filtering utility |
| jove | Jonathan's Own Version of Emacs |
| indi-with-drivers | Implementation of the INDI protocol for POSIX operating systems |
| jasper | Image processing/coding toolkit |
| home-manager | Nix-based user environment configurator |
| iconConvTools | Tools for icon conversion specific to nix package manager |
| iir1 | DSP IIR realtime filter library written in C++ |
| hepmc3 | HepMC package is an object oriented, C++ event record for High Energy Physics Monte Carlo generators and simulation |
| ipmitool | Command-line interface to IPMI-enabled devices |
| httptunnel | Creates a bidirectional virtual data connection tunnelled in HTTP requests |
| imagemagick_light | Software suite to create, edit, compose, or convert bitmap images |
| jing-trang | RELAX NG validator in Java |
| jadx | Dex to Java decompiler |
| hypr | Tiling X11 window manager written in modern C++ |
| imtui | Immediate mode text-based user interface library |