diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
new file mode 100644
index 0000000..735e767
--- /dev/null
+++ b/.github/workflows/test.yml
@@ -0,0 +1,8 @@
+name: test
+on: push
+jobs:
+  main:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v2
+      - run: make test
diff --git a/LICENSE b/LICENSE
new file mode 100644
index 0000000..0e259d4
--- /dev/null
+++ b/LICENSE
@@ -0,0 +1,121 @@
+Creative Commons Legal Code
+
+CC0 1.0 Universal
+
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+irrevocable and unconditional license to exercise Affirmer's Copyright and
+Related Rights in the Work (i) in all territories worldwide, (ii) for the
+maximum duration provided by applicable law or treaty (including future
+time extensions), (iii) in any current or future medium and for any number
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+limitation commercial, advertising or promotional purposes (the
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+reason be judged legally invalid or ineffective under applicable law, such
+partial invalidity or ineffectiveness shall not invalidate the remainder
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+will not (i) exercise any of his or her remaining Copyright and Related
+Rights in the Work or (ii) assert any associated claims and causes of
+action with respect to the Work, in either case contrary to Affirmer's
+express Statement of Purpose.
+
+4. Limitations and Disclaimers.
+
+ a. No trademark or patent rights held by Affirmer are waived, abandoned,
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+    this CC0 or use of the Work.
diff --git a/Makefile b/Makefile
new file mode 100644
index 0000000..f077e5a
--- /dev/null
+++ b/Makefile
@@ -0,0 +1,3 @@
+.PHONY: test build
+test:;./test
+build:;./build
diff --git a/README.md b/README.md
new file mode 100644
index 0000000..c8ae932
--- /dev/null
+++ b/README.md
@@ -0,0 +1,20 @@
+# GitHub によく似たページ
+
+GitHub によく似たページの表示を回避するための hosts ファイルと [uBlacklist](https://iorate.github.io/ublacklist/) 向けのルール
+
+## ダウンロード
+
+- hosts: https://raw.githubusercontent.com/kou029w/looks-like-github/main/hosts
+- uBlacklist: https://raw.githubusercontent.com/kou029w/looks-like-github/main/uBlacklist.txt
+
+## 含まれている理由
+
+why ファイルに `{ドメイン名} {よく似たページのURL} {オリジナルのURL}` 形式で記載
+
+## 関連
+
+- [uBlacklist \- iorate\.github\.io](https://iorate.github.io/ublacklist/)
+- [arosh/ublacklist\-github\-translation: Exclude machine\-translated GitHub from Google search](https://github.com/arosh/ublacklist-github-translation)
+- [arosh/ublacklist\-stackoverflow\-translation: Stack Overflow の機械翻訳サイトの除外用フィルタ](https://github.com/arosh/ublacklist-stackoverflow-translation)
+- [HO\-0520\-IT/uBlacklist\-wiki\-copy\-sites: uBlacklist subscription list for blocking Wikipedia copy sites](https://github.com/HO-0520-IT/uBlacklist-wiki-copy-sites)
+- [ncaq/uBlacklistRule: uBlacklist 向けのルールです。](https://github.com/ncaq/uBlacklistRule)
diff --git a/build b/build
new file mode 100755
index 0000000..d60d304
--- /dev/null
+++ b/build
@@ -0,0 +1,10 @@
+#!/bin/bash
+set -euo pipefail
+
+> hosts
+> uBlacklist.txt
+
+while read -a name; do
+  echo "0.0.0.0 ${name}" >> hosts
+  echo "*://${name}/*" >> uBlacklist.txt
+done < why
diff --git a/hosts b/hosts
new file mode 100644
index 0000000..6889c76
--- /dev/null
+++ b/hosts
@@ -0,0 +1,2 @@
+0.0.0.0 github.55860.com
+0.0.0.0 github.yuuza.net
diff --git a/test b/test
new file mode 100755
index 0000000..76f8217
--- /dev/null
+++ b/test
@@ -0,0 +1,7 @@
+#!/bin/bash
+set -euxo pipefail
+
+while read -a args; do
+  name=${args[0]}
+  diff -u <(curl -sL "${args[2]}") <(curl -sL "${args[1]}")
+done < why
diff --git a/uBlacklist.txt b/uBlacklist.txt
new file mode 100644
index 0000000..32300b0
--- /dev/null
+++ b/uBlacklist.txt
@@ -0,0 +1,2 @@
+*://github.55860.com/*
+*://github.yuuza.net/*
diff --git a/why b/why
new file mode 100644
index 0000000..49a808b
--- /dev/null
+++ b/why
@@ -0,0 +1,2 @@
+github.55860.com https://github.55860.com/github.json https://github.com/github.json
+github.yuuza.net https://github.yuuza.net/github.json https://github.com/github.json