diff --git a/.gitignore b/.gitignore
index 26bfa0f..09f9f64 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1 +1,2 @@
-/venv/
\ No newline at end of file
+/venv/
+/.vscode/
\ No newline at end of file
diff --git a/availables.txt b/availables.txt
new file mode 100644
index 0000000..e69de29
diff --git a/main.py b/main.py
old mode 100644
new mode 100755
index e69de29..1c5d9c8
--- a/main.py
+++ b/main.py
@@ -0,0 +1,58 @@
+#!/usr/bin/env python3
+version = "1.0.0"
+
+import urllib3
+import json
+import itertools
+import optparse
+
+parser = optparse.OptionParser(usage="usage: %prog [options] arg", version=version)
+http = urllib3.PoolManager() # Instance to make requests.
+
+url = "https://www.reddit.com/api/username_available.json?user={}" # Url to reddit api for check username available
+dictionary = "qwertyuiopasdfghjklzxcvbnmQWERTYUIOPASDFGHJKLZXCVBNM1234567890" # Char dictionary for names creating
+
+def Check_Available_Username(username):
+    response = http.request("GET", url.format(username)) # Get response from reddit api
+    result = json.dumps(json.loads(response.data.decode("utf-8"))) # Result. Decoding, converting to string from json
+    format_print = "Username: {} - {}"
+    if result == "true":
+        print(format_print.format(username, "Available"))
+    else:
+        print(format_print.format(username, "Not Available"))
+
+def Check_Available_Username_By_Length(length):
+    permutations = list(map(lambda x: "".join(x), itertools.product(dictionary, repeat=length))) # String which contains usernames from itertools.product. Example of itertools.product: product('ABCD', repeat=2) - AA AB AC AD BA BB BC BD CA CB CC CD DA DB DC DD
+    file = open("availables.txt", "a") # File for available usernames
+    for username in permutations:
+        response = http.request("GET", url.format(username)) # Get response from reddit api
+        result = json.dumps(json.loads(response.data.decode("utf-8"))) # Result. Decoding, converting to string from json
+        format_print = "Username: {} - {}"
+        if result == "true":
+            print(format_print.format(username, "Available\tYES!"))
+            file.write("{}\n".format(username)) # Add Available result to file
+        elif result == "false":
+            print(format_print.format(username, "Not Available"))
+
+parser.add_option(
+    "-n", "--byname",
+    action="store",
+    help="Check available username by name.",
+    type="string",
+    dest="username"
+)
+
+parser.add_option(
+    "-l", "--bylen",
+    action="store",
+    help="Check available username by dictionary with declarated length. Result will be logged to file: available.txt",
+    type=int,
+    dest="usernames_length"
+)
+
+options, args = parser.parse_args()
+
+if options.username != None:
+    Check_Available_Username(options.username)
+if options.usernames_length != None:
+    Check_Available_Username_By_Length(options.usernames_length)
\ No newline at end of file