diff --git a/.rustfmt.toml b/.rustfmt.toml
new file mode 100644
index 0000000..dcecfa6
--- /dev/null
+++ b/.rustfmt.toml
@@ -0,0 +1,8 @@
+format_strings = true
+group_imports = "StdExternalCrate"
+hex_literal_case = "Lower"
+imports_granularity = "Crate"
+reorder_impl_items = true
+use_field_init_shorthand = true
+wrap_comments = true
+edition = "2021"
diff --git a/Cargo.toml b/Cargo.toml
new file mode 100644
index 0000000..49dfa6f
--- /dev/null
+++ b/Cargo.toml
@@ -0,0 +1,12 @@
+[workspace]
+resolver = "2"
+
+
+[workspace.package]
+authors = ["강동윤/Donny <kdy.1997.dev@gmail.com>"]
+edition = "2021"
+homepage = "https://github.com/dudykr/oss"
+license = "MIT"
+repository = "https://github.com/dudykr/oss"
+rust-version = "1.71"
+version = "0.0.1"
diff --git a/README.md b/README.md
index b4aa81e..56d51f1 100644
--- a/README.md
+++ b/README.md
@@ -4,36 +4,16 @@ Various open-source projects by Dudy.
 
 ## Apps (`apps/`)
 
-### `apps/swc-plugins/`
-
-- Homepage: https://plugins.swc.rs
-
-This is a web app that lists all the plugins for the [swc](https://swc.rs) project.
+next.js apps.
 
 ## Browser/IDE Extensions (`exts/`)
 
-### `exts/vscode-tailwind-preview/`
-
-A vscode extension that adds a preview action to Tailwind components in **jest snapshots**.
+Browser extensions and IDE plugins.
 
 ## Packages (`packages/`)
 
-### `packages/utils/`
-
-A collection of utility functions.
-
-### `packages/jest-expect-image/`
-
-A jest matcher for comparing images.
-
-### `packages/next-image-snapshot/`
-
-A test utility for comparing UI as images in Next.js projects.
+Utilities and libraries.
 
 ## Docs (`docs/`)
 
-### `docs/stc/`
-
-Documentation for the new TypeScript type checker, written in the Rust programming language.
-
-- HomePage: https://stc.dudy.dev
+Documentations for various projects.
diff --git a/rust-toolchain b/rust-toolchain
new file mode 100644
index 0000000..473a929
--- /dev/null
+++ b/rust-toolchain
@@ -0,0 +1 @@
+nightly-2024-02-06
\ No newline at end of file