Open parameter path in file browser, for https://jurajtomori.wordpress.com/2018/05/24/houdini-tip-open-parameter-path-in-file-browser/

PARMmenu.xml

<?xml version="1.0" encoding="UTF-8"?>

<menuDocument>
    <menu>
        <subMenu id="open_in">
            <label>Open in...</label>
            <insertBefore />
            <context>
		        <expression>len(kwargs["parms"]) > 0 and kwargs["parms"][0].parmTemplate().type().name() == "String"</expression>
	        </context>
            <scriptItem id="reveal_in_file_browser">
                <label>File browser</label>
                <scriptCode>
<![CDATA[
import os
import sys
import subprocess

path = kwargs["parms"][0].eval()
old_path = path
if path != "":
    path = hou.expandString(path)
    path = os.path.normpath(path)
    path = os.path.dirname(path)

    if os.path.exists(path):
        if sys.platform == "linux2":
            new_env = os.environ
            new_env["LD_LIBRARY_PATH"] = ""
            subprocess.Popen(["xdg-open", path], env=new_env)
        if sys.platform == "win32":
            subprocess.Popen(["explorer", path])
        if sys.platform == "darwin":
            subprocess.Popen(["open", path])
    else:
        print('Folder "{}" does not exist or you do not have permission to access it'.format(old_path))
]]>
                </scriptCode>
            </scriptItem>
            <scriptItem id="reveal_in_mplay">
                <label>Mplay</label>
                <scriptCode>
<![CDATA[
import os
import sys
import subprocess

in_path = hou.pwd().path()
hou.cd(kwargs["parms"][0].node().path())

path = kwargs["parms"][0].unexpandedString()
if path != "":
    path = path.replace("$F", "\$F")
    path = path.replace("$T", "\$T")
    path = path.replace("$SF", "\$SF")
    path = os.path.normpath( hou.expandString(path) )

    subprocess.Popen(["mplay", path])

hou.cd(in_path)
]]>
                </scriptCode>
            </scriptItem>
            <scriptItem id="reveal_in_gplay">
                <label>Gplay</label>
                <scriptCode>
<![CDATA[
import os
import sys
import subprocess

path = kwargs["parms"][0].eval()
if path != "":
    path = os.path.normpath(path)

    subprocess.Popen(["gplay", path])
 ]]>
                </scriptCode>
            </scriptItem>
            <scriptItem id="reveal_in_rv">
                <label>RV</label>
                <scriptCode>
<![CDATA[
import os
import sys
import subprocess

path = kwargs["parms"][0].eval()
if path != "":
    path = os.path.normpath(path)

    subprocess.Popen(["rv", path])
 ]]>
                </scriptCode>
            </scriptItem>
            <scriptItem id="reveal_in_djv_view">
                <label>Djv view</label>
                <scriptCode>
<![CDATA[
import os
import sys
import subprocess

path = kwargs["parms"][0].eval()
if path != "":
    path = os.path.normpath(path)

    subprocess.Popen(["djv_view", path])
 ]]>
                </scriptCode>
            </scriptItem>
            <scriptItem id="reveal_in_photoshop">
                <label>Photoshop</label>
                <scriptCode>
<![CDATA[
import os
import sys
import subprocess

path = kwargs["parms"][0].eval()
if path != "":
    path = os.path.normpath(path)

    subprocess.Popen(["Photoshop", path])
 ]]>
                </scriptCode>
            </scriptItem>
        </subMenu>
    </menu>
</menuDocument>