| hss | A SSH helper that uses regex and fancy expansion to dynamically manage SSH shortcuts.
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| hh-suite | Remote protein homology detection suite |
| irker | IRC client that runs as a daemon accepting notification requests |
| hcdiag | Collects and bundles product and platform diagnostics supporting Consul, Nomad, TFE, and Vault |
| ilbc | |
| ipopt | Software package for large-scale nonlinear optimization |
| httrack | Easy-to-use offline browser / website mirroring utility |
| ipcalc | Simple IP network calculator |
| honcho | Python clone of Foreman, a tool for managing Procfile-based applications |
| hpl | Portable Implementation of the Linpack Benchmark for Distributed-Memory Computers |
| hiera-eyaml | Per-value asymmetric encryption of sensitive data for Hiera |
| ictree | Like tree but interactive |
| jffi | Java Foreign Function Interface |
| jadx | Dex to Java decompiler |
| imgcat | It's like cat, but for images |
| hol_light | Interactive theorem prover based on Higher-Order Logic |
| heroku | Everything you need to get started using Heroku |
| httpunit | |
| indi-full-nonfree | Implementation of the INDI protocol for POSIX operating systems |
| jbig2dec | Decoder implementation of the JBIG2 image compression format |
| i2pd | Minimal I2P router written in C++ |
| i3-rounded | Fork of i3-gaps that adds rounding to window corners |
| humanity-icon-theme | Humanity icons from Ubuntu |
| imake | Obsolete C preprocessor interface to the make utility |
| html-proofer | Tool to validate HTML files |
| itk | Insight Segmentation and Registration Toolkit |
| jmeter | 100% pure Java desktop application designed to load test functional behavior and measure performance |
| hdf5_1_10 | Data model, library, and file format for storing and managing data |
| ili2c | INTERLIS Compiler |
| hsetroot | Allows you to compose wallpapers ('root pixmaps') for X |
| jasper-gtk-theme | Modern and clean Gtk theme |
| host | Domain name server |
| id3 | Portable command-line mass tagger |
| hepmc3 | HepMC package is an object oriented, C++ event record for High Energy Physics Monte Carlo generators and simulation |
| internalallthethings | Active Directory and Internal Pentest Cheatsheets |
| jboss_mysql_jdbc | MySQL Connector/J |
| javaPackages.openjfx25 | Next-generation Java client toolkit |
| json_c | JSON implementation in C |
| jq-zsh-plugin | Interactively build jq expressions in Zsh |
| iceauth | libICE authority file utility |
| hdf5 | Data model, library, and file format for storing and managing data |
| ioquake3 | Fast-paced 3D first-person shooter, a community effort to continue supporting/developing id's Quake III Arena |
| hermitcli | Manages isolated, self-bootstrapping sets of tools in software projects |
| hfst-ospell | HFST spell checker library and command line tool |
| hitori | GTK application to generate and let you play games of Hitori |
| jabcode-reader | High-capacity 2D color bar code (reader) |
| hsqldb | Relational, embedable database management system written in Java and a set of related tools |
| hb-honeypot | Script that listens on TCP port 443 and responds with completely bogus SSL heartbeat responses |
| hol | Interactive theorem prover based on Higher-Order Logic |
| inspircd | Modular C++ IRC server |
| health | Health tracking app for the GNOME desktop |
| irony-server | Server part of irony |
| jboss | Open Source J2EE application server |
| heimdal | Implementation of Kerberos 5 (and some more stuff) |
| hdf5-fortran | Data model, library, and file format for storing and managing data |
| itk_5_2 | Insight Segmentation and Registration Toolkit |
| hmat-oss | Hierarchical matrix C/C++ library |
| jigdo | Download utility that can fetch files from several sources simultaneously |
| iperf3 | Tool to measure IP bandwidth using UDP or TCP |
| hellwal | Fast, extensible color palette generator |
| imapsync | Mail folder synchronizer between IMAP servers |
| indi-full | Implementation of the INDI protocol for POSIX operating systems |
| ii | Irc it, simple FIFO based irc client |
| iperf2 | Tool to measure IP bandwidth using UDP or TCP |
| hexapdf | Versatile PDF creation and manipulation library |
| indilib | Implementation of the INDI protocol for POSIX operating systems |
| hdf5-fortran-mpi | Data model, library, and file format for storing and managing data |
| imlib2 | Image manipulation library |
| hfst | FST language processing library |
| imapfilter | Mail filtering utility |
| id3v2 | Command line editor for id3v2 tags |
| ideviceinstaller | List/modify installed apps of iOS devices |
| jags | Just Another Gibbs Sampler |
| hostsblock | Ad- and malware-blocking script for Linux |
| hivex | Windows registry hive extraction library |
| jtag-remote-server | Remote JTAG server for remote debugging |
| 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 |
| jameica | Free Runtime Environment for Java Applications |
| itamae | Simple and lightweight configuration management tool inspired by Chef |
| imlib2-nox | Image manipulation library |
| jnettop | Network traffic visualizer |
| jsonrpc-glib | Library to communicate using the JSON-RPC 2.0 specification |
| home-manager | Nix-based user environment configurator |
| icewm | Simple, lightweight X window manager |
| ico | Simple animation program that may be used for testing various X11 operations and extensions |
| herwig | Multi-purpose particle physics event generator |
| hicolor-icon-theme | Default fallback theme used by implementations of the icon theme specification |
| imagelol | Simple program to store a file into a PNG image |
| hyprpicker | Wlroots-compatible Wayland color picker that does not suck |
| include-what-you-use | Analyze #includes in C/C++ source files with clang |
| httptunnel | Creates a bidirectional virtual data connection tunnelled in HTTP requests |
| indent | Source code reformatter |
| json2tsv | JSON to TSV converter |
| imsprog | Free I2C EEPROM programmer tool for CH341A device |
| hdf5-cpp | Data model, library, and file format for storing and managing data |
| jive | Standalone JAVA application designed to browse and edit the static TANGO database |
| isync | Free IMAP and MailDir mailbox synchronizer |
| iruby | Ruby kernel for Jupyter |
| idevicerestore | Restore/upgrade firmware of iOS devices |
| jedit | Programmer's text editor written in Java |