| hdr | HAHTsite Site Configuration Data |
| hdt | Adobe Photoshop HDR Toning Preset |
| helpcfg | Adobe AIR Help Configuration |
| hexdwc | HHD Hex Editor Configuration Data |
| hexset | Free Hex Editor Neo Settings Data |
| hfc | H-JTAG Configuration Data |
| hfm | HFM.NET Configuration |
| hfmx | HFM.NET v0.90 Configuration |
| hfp | Harrys Filters Preset |
| hfp | XnView Filter Settings |
| hgeol | Mercurial EOL Data |
| hgrc | Mercurial Configuration Data |
| hid | Sony Ericsson Bluetooth HID Configuration |
| hkc | HTML-Kit Auto Complete Shortcuts Data |
| hml | HostMonitor TestList Data |
| hnh | HTTP Net Header Configuration |
| hotkeys | 3D-Coat Hotkeys Settings Data |
| how2 | Visma Performit Player Configuration |
| hrt | Heart-Profit Configuration |
| hsg | HAHTsite Site Configuration for AS Group |
| hst | HAHTsite Site Configuration Data |
| ht | HyperTerminal Settings |
| htaccess | Apache htaccess File |
| htgroup | Apache htgroup File |
| http | Apache HTTP Configuration Data |
| https | Apache HTTPS Configuration Data |
| hvm | Xen HVM Configuration File |
| hvpn | HSS Elite VPN Configuration |
| hwcfg | VersaPro Hardware Configuration |
| hwdef | Linux Kernel Hardware Description |
