.cha

File Type 1 Generic IconIRC Chat Configuration File
File Format Standard
Usage Open manually
Rank ★ ★ ☆  Average
Description

Contains necessary information for opening an IRC channel; includes server, port, channel name, and possibly a password; URLs ending in ".cha" may open a chat program from a Web browser.

Open With
Windows

IconmIRC

IconVisual IRC

IconXChat

macOS

IconSnak

IconColloquy

Updated 2007
File Type 2 Generic IconCharacter Layout File
File Format Standard
Usage Open manually; may be referenced by an application
Rank ★ ☆ ☆  Uncommon
Description

Contains character layout information for a certain font; describes how the characters are positioned and defines the kerning between each character.

CHA files can be opened and edited with DTL (Dutch Type Library) FontMaster software.

Open With
Windows

IconDTL OTMaster Light

IconDTL FontMaster Light

IconDTL KernMaster

macOS

IconDTL OTMaster Light

Unix

IconDTL OTMaster Light

Updated 2007
File Type 3 Photoshop Channel Mixture IconPhotoshop Channel Mixture
File Format Proprietary (Adobe Systems)
Usage Open manually; may be referenced by an application
Rank ★ ☆ ☆  Uncommon
Description

Custom color channel mixture that can be applied to a Photoshop image file; modifies the intensity of the source channels, such as red, green, and blue, and applies them to an output channel.

Channel mixture presets can be loaded and saved by selecting "Image→Adjustments→Channel Mixer" from the Photoshop menu bar.

Open With
Windows

IconAdobe Photoshop

macOS

IconAdobe Photoshop

Updated 2007
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