diff --git a/docs/parsers/arp.md b/docs/parsers/arp.md
index 2b37709d..da43c8c0 100644
--- a/docs/parsers/arp.md
+++ b/docs/parsers/arp.md
@@ -4,6 +4,9 @@ jc - JSON CLI output utility arp Parser
 Usage:
     specify --arp as the first argument if the piped input is coming from arp
 
+Compatibility:
+    'linux', 'aix', 'freebsd', 'darwin'
+
 Examples:
 
     $ arp | jc --arp -p
diff --git a/docs/parsers/df.md b/docs/parsers/df.md
index 850b3e81..a8b58608 100644
--- a/docs/parsers/df.md
+++ b/docs/parsers/df.md
@@ -4,6 +4,9 @@ jc - JSON CLI output utility df Parser
 Usage:
     specify --df as the first argument if the piped input is coming from df
 
+Compatibility:
+    'linux', 'darwin'
+
 Examples:
 
     $ df | jc --df -p
diff --git a/docs/parsers/dig.md b/docs/parsers/dig.md
index cb2e7e07..ee1990d1 100644
--- a/docs/parsers/dig.md
+++ b/docs/parsers/dig.md
@@ -4,6 +4,9 @@ jc - JSON CLI output utility dig Parser
 Usage:
     Specify --dig as the first argument if the piped input is coming from dig
 
+Compatibility:
+    'linux', 'darwin', 'cygwin', 'win32', 'aix', 'freebsd'
+
 Examples:
 
     $ dig cnn.com www.cnn.com @205.251.194.64 | jc --dig -p
diff --git a/docs/parsers/env.md b/docs/parsers/env.md
index 2c0f781c..b2e05478 100644
--- a/docs/parsers/env.md
+++ b/docs/parsers/env.md
@@ -4,6 +4,9 @@ jc - JSON CLI output utility env Parser
 Usage:
     specify --env as the first argument if the piped input is coming from env
 
+Compatibility:
+    'linux', 'darwin', 'cygwin', 'win32', 'aix', 'freebsd'
+
 Examples:
 
     $ env | jc --env -p
diff --git a/docs/parsers/free.md b/docs/parsers/free.md
index 6d3a3f6a..41ddf869 100644
--- a/docs/parsers/free.md
+++ b/docs/parsers/free.md
@@ -4,6 +4,9 @@ jc - JSON CLI output utility free Parser
 Usage:
     specify --free as the first argument if the piped input is coming from free
 
+Compatibility:
+    'linux'
+
 Examples:
 
     $ free | jc --free -p
diff --git a/docs/parsers/fstab.md b/docs/parsers/fstab.md
index 1a874dcd..dd2893bd 100644
--- a/docs/parsers/fstab.md
+++ b/docs/parsers/fstab.md
@@ -4,6 +4,9 @@ jc - JSON CLI output utility fstab Parser
 Usage:
     specify --fstab as the first argument if the piped input is coming from a fstab file
 
+Compatibility:
+    'linux'
+
 Examples:
 
     $ cat /etc/fstab | jc --fstab -p
diff --git a/docs/parsers/history.md b/docs/parsers/history.md
index 9cea8820..4db5ce82 100644
--- a/docs/parsers/history.md
+++ b/docs/parsers/history.md
@@ -4,6 +4,9 @@ jc - JSON CLI output utility history Parser
 Usage:
     specify --history as the first argument if the piped input is coming from history
 
+Compatibility:
+    'linux', 'darwin', 'cygwin', 'win32', 'aix', 'freebsd'
+
 Examples:
 
     $ history | jc --history -p
diff --git a/docs/parsers/hosts.md b/docs/parsers/hosts.md
index d8df7e16..f538930c 100644
--- a/docs/parsers/hosts.md
+++ b/docs/parsers/hosts.md
@@ -4,6 +4,9 @@ jc - JSON CLI output utility hosts Parser
 Usage:
     specify --hosts as the first argument if the piped input is coming from a hosts file
 
+Compatibility:
+    'linux', 'darwin', 'cygwin', 'win32', 'aix', 'freebsd'
+
 Examples:
 
     $ cat /etc/hosts | jc --hosts -p
diff --git a/docs/parsers/ifconfig.md b/docs/parsers/ifconfig.md
index da1b987a..fb98830d 100644
--- a/docs/parsers/ifconfig.md
+++ b/docs/parsers/ifconfig.md
@@ -6,6 +6,9 @@ Usage:
 
     no ifconfig options are supported.
 
+Compatibility:
+    'linux', 'aix', 'freebsd', 'darwin'
+
 Examples:
 
     $ ifconfig | jc --ifconfig -p
diff --git a/docs/parsers/iptables.md b/docs/parsers/iptables.md
index f6d68c5d..ab1bab93 100644
--- a/docs/parsers/iptables.md
+++ b/docs/parsers/iptables.md
@@ -6,6 +6,9 @@ Usage:
 
     Supports -vLn and --line-numbers for all tables
 
+Compatibility:
+    'linux'
+
 Examples:
 
     $ sudo iptables --line-numbers -v -L -t nat | jc --iptables -p
diff --git a/docs/parsers/jobs.md b/docs/parsers/jobs.md
index b798ed67..e8e7efa1 100644
--- a/docs/parsers/jobs.md
+++ b/docs/parsers/jobs.md
@@ -6,6 +6,9 @@ Usage:
 
     Also supports the -l option
 
+Compatibility:
+    'linux', 'darwin', 'cygwin', 'aix', 'freebsd'
+
 Example:
 
     $ jobs -l | jc --jobs -p
diff --git a/docs/parsers/ls.md b/docs/parsers/ls.md
index 17796e2c..14a40ebd 100644
--- a/docs/parsers/ls.md
+++ b/docs/parsers/ls.md
@@ -11,6 +11,9 @@ Usage:
           with human readable suffixes will be converted to Null in default view
           since the parser attempts to convert this field to an integer.
 
+Compatibility:
+    'linux', 'darwin', 'cygwin', 'aix', 'freebsd'
+
 Examples:
 
     $ ls /usr/bin | jc --ls -p
diff --git a/docs/parsers/lsblk.md b/docs/parsers/lsblk.md
index b413e922..bc085dba 100644
--- a/docs/parsers/lsblk.md
+++ b/docs/parsers/lsblk.md
@@ -4,6 +4,9 @@ jc - JSON CLI output utility lsblk Parser
 Usage:
     specify --lsblk as the first argument if the piped input is coming from lsblk
 
+Compatibility:
+    'linux'
+
 Examples:
 
     $ lsblk | jc --lsblk -p
diff --git a/docs/parsers/lsmod.md b/docs/parsers/lsmod.md
index 95063265..4a139301 100644
--- a/docs/parsers/lsmod.md
+++ b/docs/parsers/lsmod.md
@@ -4,6 +4,9 @@ jc - JSON CLI output utility lsmod Parser
 Usage:
     specify --lsmod as the first argument if the piped input is coming from lsmod
 
+Compatibility:
+    'linux'
+
 Examples:
 
     $ lsmod | jc --lsmod -p
diff --git a/docs/parsers/lsof.md b/docs/parsers/lsof.md
index 2798327d..8f2b58af 100644
--- a/docs/parsers/lsof.md
+++ b/docs/parsers/lsof.md
@@ -4,6 +4,9 @@ jc - JSON CLI output utility lsof Parser
 Usage:
     specify --lsof as the first argument if the piped input is coming from lsof
 
+Compatibility:
+    'linux'
+
 Examples:
 
     $ sudo lsof | jc --lsof -p
diff --git a/docs/parsers/mount.md b/docs/parsers/mount.md
index 9c0c8033..8d23c815 100644
--- a/docs/parsers/mount.md
+++ b/docs/parsers/mount.md
@@ -4,6 +4,9 @@ jc - JSON CLI output utility mount Parser
 Usage:
     specify --mount as the first argument if the piped input is coming from mount
 
+Compatibility:
+    'linux'
+
 Example:
 
     $ mount | jc --mount -p
diff --git a/jc/parsers/env.py b/jc/parsers/env.py
index 89873e8b..9c4bbb06 100644
--- a/jc/parsers/env.py
+++ b/jc/parsers/env.py
@@ -3,6 +3,9 @@
 Usage:
     specify --env as the first argument if the piped input is coming from env
 
+Compatibility:
+    'linux', 'darwin', 'cygwin', 'win32', 'aix', 'freebsd'
+
 Examples:
 
     $ env | jc --env -p
diff --git a/jc/parsers/foo.py b/jc/parsers/foo.py
index 4934b8d9..b7d9e4ef 100644
--- a/jc/parsers/foo.py
+++ b/jc/parsers/foo.py
@@ -3,6 +3,9 @@
 Usage:
     specify --foo as the first argument if the piped input is coming from foo
 
+Compatibility:
+    'linux', 'darwin', 'cygwin', 'win32', 'aix', 'freebsd'
+
 Examples:
 
     $ foo | jc --foo -p
diff --git a/jc/parsers/free.py b/jc/parsers/free.py
index ea509019..2e9ce861 100644
--- a/jc/parsers/free.py
+++ b/jc/parsers/free.py
@@ -3,6 +3,9 @@
 Usage:
     specify --free as the first argument if the piped input is coming from free
 
+Compatibility:
+    'linux'
+
 Examples:
 
     $ free | jc --free -p
diff --git a/jc/parsers/fstab.py b/jc/parsers/fstab.py
index 904c42a3..8c7fe4bb 100644
--- a/jc/parsers/fstab.py
+++ b/jc/parsers/fstab.py
@@ -3,6 +3,9 @@
 Usage:
     specify --fstab as the first argument if the piped input is coming from a fstab file
 
+Compatibility:
+    'linux'
+
 Examples:
 
     $ cat /etc/fstab | jc --fstab -p
diff --git a/jc/parsers/history.py b/jc/parsers/history.py
index b7f28743..f4dbfc1d 100644
--- a/jc/parsers/history.py
+++ b/jc/parsers/history.py
@@ -3,6 +3,9 @@
 Usage:
     specify --history as the first argument if the piped input is coming from history
 
+Compatibility:
+    'linux', 'darwin', 'cygwin', 'win32', 'aix', 'freebsd'
+
 Examples:
 
     $ history | jc --history -p
diff --git a/jc/parsers/hosts.py b/jc/parsers/hosts.py
index 919ee0a6..b70c19eb 100644
--- a/jc/parsers/hosts.py
+++ b/jc/parsers/hosts.py
@@ -3,6 +3,9 @@
 Usage:
     specify --hosts as the first argument if the piped input is coming from a hosts file
 
+Compatibility:
+    'linux', 'darwin', 'cygwin', 'win32', 'aix', 'freebsd'
+
 Examples:
 
     $ cat /etc/hosts | jc --hosts -p
diff --git a/jc/parsers/ifconfig.py b/jc/parsers/ifconfig.py
index 74089347..b4e9b675 100644
--- a/jc/parsers/ifconfig.py
+++ b/jc/parsers/ifconfig.py
@@ -5,6 +5,9 @@ Usage:
 
     no ifconfig options are supported.
 
+Compatibility:
+    'linux', 'aix', 'freebsd', 'darwin'
+
 Examples:
 
     $ ifconfig | jc --ifconfig -p
diff --git a/jc/parsers/iptables.py b/jc/parsers/iptables.py
index bba207d6..52534395 100644
--- a/jc/parsers/iptables.py
+++ b/jc/parsers/iptables.py
@@ -5,6 +5,9 @@ Usage:
 
     Supports -vLn and --line-numbers for all tables
 
+Compatibility:
+    'linux'
+
 Examples:
 
     $ sudo iptables --line-numbers -v -L -t nat | jc --iptables -p
@@ -139,7 +142,7 @@ def process(proc_data):
     Returns:
 
         dictionary   structured data with the following schema:
-    
+
         [
           {
             "chain":                string,
diff --git a/jc/parsers/jobs.py b/jc/parsers/jobs.py
index 0dff592c..877fd36f 100644
--- a/jc/parsers/jobs.py
+++ b/jc/parsers/jobs.py
@@ -5,6 +5,9 @@ Usage:
 
     Also supports the -l option
 
+Compatibility:
+    'linux', 'darwin', 'cygwin', 'aix', 'freebsd'
+
 Example:
 
     $ jobs -l | jc --jobs -p
diff --git a/jc/parsers/ls.py b/jc/parsers/ls.py
index 1d40e1fd..48b9736b 100644
--- a/jc/parsers/ls.py
+++ b/jc/parsers/ls.py
@@ -10,6 +10,9 @@ Usage:
           with human readable suffixes will be converted to Null in default view
           since the parser attempts to convert this field to an integer.
 
+Compatibility:
+    'linux', 'darwin', 'cygwin', 'aix', 'freebsd'
+
 Examples:
 
     $ ls /usr/bin | jc --ls -p
diff --git a/jc/parsers/lsblk.py b/jc/parsers/lsblk.py
index e0de3efe..9a9ff95b 100644
--- a/jc/parsers/lsblk.py
+++ b/jc/parsers/lsblk.py
@@ -3,6 +3,9 @@
 Usage:
     specify --lsblk as the first argument if the piped input is coming from lsblk
 
+Compatibility:
+    'linux'
+
 Examples:
 
     $ lsblk | jc --lsblk -p
diff --git a/jc/parsers/lsmod.py b/jc/parsers/lsmod.py
index 169523c7..c1e2d468 100644
--- a/jc/parsers/lsmod.py
+++ b/jc/parsers/lsmod.py
@@ -3,6 +3,9 @@
 Usage:
     specify --lsmod as the first argument if the piped input is coming from lsmod
 
+Compatibility:
+    'linux'
+
 Examples:
 
     $ lsmod | jc --lsmod -p
diff --git a/jc/parsers/lsof.py b/jc/parsers/lsof.py
index b92f8c28..6a3ad4bc 100644
--- a/jc/parsers/lsof.py
+++ b/jc/parsers/lsof.py
@@ -3,6 +3,9 @@
 Usage:
     specify --lsof as the first argument if the piped input is coming from lsof
 
+Compatibility:
+    'linux'
+
 Examples:
 
     $ sudo lsof | jc --lsof -p
diff --git a/jc/parsers/mount.py b/jc/parsers/mount.py
index ca373fb6..66d2c490 100644
--- a/jc/parsers/mount.py
+++ b/jc/parsers/mount.py
@@ -3,6 +3,9 @@
 Usage:
     specify --mount as the first argument if the piped input is coming from mount
 
+Compatibility:
+    'linux'
+
 Example:
 
     $ mount | jc --mount -p