diff --git a/Cargo.toml b/Cargo.toml
index b5ffb58f5e..47e278f824 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -8,14 +8,14 @@ members = [
   "serde_v8",
   "test_plugin",
   "test_util",
-  "op_crates/crypto",
-  "op_crates/fetch",
-  "op_crates/timers",
-  "op_crates/url",
-  "op_crates/web",
-  "op_crates/webgpu",
-  "op_crates/webidl",
-  "op_crates/websocket",
+  "extensions/crypto",
+  "extensions/fetch",
+  "extensions/timers",
+  "extensions/url",
+  "extensions/web",
+  "extensions/webgpu",
+  "extensions/webidl",
+  "extensions/websocket",
 ]
 exclude = [
   "std/hash/_wasm"
diff --git a/cli/dts/lib.deno.window.d.ts b/cli/dts/lib.deno.window.d.ts
index 3eebab6775..b7eca1e24e 100644
--- a/cli/dts/lib.deno.window.d.ts
+++ b/cli/dts/lib.deno.window.d.ts
@@ -62,7 +62,7 @@ declare function confirm(message?: string): boolean;
  */
 declare function prompt(message?: string, defaultValue?: string): string | null;
 
-// TODO(nayeemrmn): Move this to `op_crates/web` where its implementation is.
+// TODO(nayeemrmn): Move this to `extensions/web` where its implementation is.
 // The types there must first be split into window, worker and global types.
 /** The location (URL) of the object it is linked to. Changes done on it are
  * reflected on the object it relates to. Accessible via
@@ -130,6 +130,6 @@ declare class Location {
   replace(url: string): void;
 }
 
-// TODO(nayeemrmn): Move this to `op_crates/web` where its implementation is.
+// TODO(nayeemrmn): Move this to `extensions/web` where its implementation is.
 // The types there must first be split into window, worker and global types.
 declare var location: Location;
diff --git a/cli/dts/lib.deno.worker.d.ts b/cli/dts/lib.deno.worker.d.ts
index 653a8931be..1d1b08a5fc 100644
--- a/cli/dts/lib.deno.worker.d.ts
+++ b/cli/dts/lib.deno.worker.d.ts
@@ -71,7 +71,7 @@ declare var close: () => void;
 declare var name: string;
 declare var postMessage: (message: any) => void;
 
-// TODO(nayeemrmn): Move this to `op_crates/web` where its implementation is.
+// TODO(nayeemrmn): Move this to `extensions/web` where its implementation is.
 // The types there must first be split into window, worker and global types.
 /** The absolute location of the script executed by the Worker. Such an object
  * is initialized for each worker and is available via the
@@ -90,6 +90,6 @@ declare class WorkerLocation {
   readonly search: string;
 }
 
-// TODO(nayeemrmn): Move this to `op_crates/web` where its implementation is.
+// TODO(nayeemrmn): Move this to `extensions/web` where its implementation is.
 // The types there must first be split into window, worker and global types.
 declare var location: WorkerLocation;
diff --git a/cli/tests/error_009_op_crates_error.js b/cli/tests/error_009_extensions_error.js
similarity index 100%
rename from cli/tests/error_009_op_crates_error.js
rename to cli/tests/error_009_extensions_error.js
diff --git a/cli/tests/error_009_op_crates_error.js.out b/cli/tests/error_009_extensions_error.js.out
similarity index 75%
rename from cli/tests/error_009_op_crates_error.js.out
rename to cli/tests/error_009_extensions_error.js.out
index 229a0ff1f1..96ffb28298 100644
--- a/cli/tests/error_009_op_crates_error.js.out
+++ b/cli/tests/error_009_extensions_error.js.out
@@ -2,5 +2,5 @@
 new Event();
 ^
     at [WILDCARD]
-    at new Event (deno:op_crates/web/[WILDCARD])
+    at new Event (deno:extensions/web/[WILDCARD])
     at [WILDCARD]
diff --git a/cli/tests/integration_tests.rs b/cli/tests/integration_tests.rs
index 9c56396b4c..0b7b85ac81 100644
--- a/cli/tests/integration_tests.rs
+++ b/cli/tests/integration_tests.rs
@@ -3109,9 +3109,9 @@ console.log("finish");
     output: "error_008_checkjs.js.out",
   });
 
-  itest!(error_009_op_crates_error {
-    args: "run error_009_op_crates_error.js",
-    output: "error_009_op_crates_error.js.out",
+  itest!(error_009_extensions_error {
+    args: "run error_009_extensions_error.js",
+    output: "error_009_extensions_error.js.out",
     exit_code: 1,
   });
 
diff --git a/cli/tests/unit/metrics_test.ts b/cli/tests/unit/metrics_test.ts
index 25c63dbc16..a1936cb1da 100644
--- a/cli/tests/unit/metrics_test.ts
+++ b/cli/tests/unit/metrics_test.ts
@@ -70,7 +70,7 @@ unitTest(
   },
 );
 
-// Test that ops from op_crates have metrics (via OpMiddleware)
+// Test that ops from extensions have metrics (via OpMiddleware)
 unitTest(function metricsForOpCrates(): void {
   const _ = new URL("https://deno.land");
 
diff --git a/core/extensions.rs b/core/extensions.rs
index 134aab5d41..9ad2b36974 100644
--- a/core/extensions.rs
+++ b/core/extensions.rs
@@ -110,7 +110,7 @@ impl ExtensionBuilder {
 /// Example:
 /// ```ignore
 /// include_js_files!(
-///   prefix "deno:op_crates/hello",
+///   prefix "deno:extensions/hello",
 ///   "01_hello.js",
 ///   "02_goodbye.js",
 /// )
diff --git a/op_crates/console/01_colors.js b/extensions/console/01_colors.js
similarity index 100%
rename from op_crates/console/01_colors.js
rename to extensions/console/01_colors.js
diff --git a/op_crates/console/02_console.js b/extensions/console/02_console.js
similarity index 99%
rename from op_crates/console/02_console.js
rename to extensions/console/02_console.js
index 2c0dcf4348..d0392cefec 100644
--- a/op_crates/console/02_console.js
+++ b/extensions/console/02_console.js
@@ -905,8 +905,8 @@
     if (customInspect in value && typeof value[customInspect] === "function") {
       return String(value[customInspect]());
     }
-    // This non-unique symbol is used to support op_crates, ie.
-    // in op_crates/web we don't want to depend on unique "Deno.customInspect"
+    // This non-unique symbol is used to support extensions, ie.
+    // in extensions/web we don't want to depend on unique "Deno.customInspect"
     // symbol defined in the public API. Internal only, shouldn't be used
     // by users.
     const nonUniqueCustomInspect = Symbol.for("Deno.customInspect");
@@ -915,7 +915,7 @@
       typeof value[nonUniqueCustomInspect] === "function"
     ) {
       // TODO(nayeemrmn): `inspect` is passed as an argument because custom
-      // inspect implementations in `op_crates` need it, but may not have access
+      // inspect implementations in `extensions` need it, but may not have access
       // to the `Deno` namespace in web workers. Remove when the `Deno`
       // namespace is always enabled.
       return String(value[nonUniqueCustomInspect](inspect));
diff --git a/op_crates/console/Cargo.toml b/extensions/console/Cargo.toml
similarity index 100%
rename from op_crates/console/Cargo.toml
rename to extensions/console/Cargo.toml
diff --git a/op_crates/console/README.md b/extensions/console/README.md
similarity index 100%
rename from op_crates/console/README.md
rename to extensions/console/README.md
diff --git a/op_crates/console/lib.deno_console.d.ts b/extensions/console/lib.deno_console.d.ts
similarity index 100%
rename from op_crates/console/lib.deno_console.d.ts
rename to extensions/console/lib.deno_console.d.ts
diff --git a/op_crates/console/lib.rs b/extensions/console/lib.rs
similarity index 91%
rename from op_crates/console/lib.rs
rename to extensions/console/lib.rs
index 4f64bb108a..27870fce69 100644
--- a/op_crates/console/lib.rs
+++ b/extensions/console/lib.rs
@@ -7,7 +7,7 @@ use std::path::PathBuf;
 pub fn init() -> Extension {
   Extension::builder()
     .js(include_js_files!(
-      prefix "deno:op_crates/console",
+      prefix "deno:extensions/console",
       "01_colors.js",
       "02_console.js",
     ))
diff --git a/op_crates/crypto/01_crypto.js b/extensions/crypto/01_crypto.js
similarity index 100%
rename from op_crates/crypto/01_crypto.js
rename to extensions/crypto/01_crypto.js
diff --git a/op_crates/crypto/Cargo.toml b/extensions/crypto/Cargo.toml
similarity index 100%
rename from op_crates/crypto/Cargo.toml
rename to extensions/crypto/Cargo.toml
diff --git a/op_crates/crypto/README.md b/extensions/crypto/README.md
similarity index 100%
rename from op_crates/crypto/README.md
rename to extensions/crypto/README.md
diff --git a/op_crates/crypto/lib.deno_crypto.d.ts b/extensions/crypto/lib.deno_crypto.d.ts
similarity index 100%
rename from op_crates/crypto/lib.deno_crypto.d.ts
rename to extensions/crypto/lib.deno_crypto.d.ts
diff --git a/op_crates/crypto/lib.rs b/extensions/crypto/lib.rs
similarity index 97%
rename from op_crates/crypto/lib.rs
rename to extensions/crypto/lib.rs
index 5432205483..45473f4d5f 100644
--- a/op_crates/crypto/lib.rs
+++ b/extensions/crypto/lib.rs
@@ -18,7 +18,7 @@ pub use rand; // Re-export rand
 pub fn init(maybe_seed: Option<u64>) -> Extension {
   Extension::builder()
     .js(include_js_files!(
-      prefix "deno:op_crates/crypto",
+      prefix "deno:extensions/crypto",
       "01_crypto.js",
     ))
     .ops(vec![(
diff --git a/op_crates/fetch/01_fetch_util.js b/extensions/fetch/01_fetch_util.js
similarity index 100%
rename from op_crates/fetch/01_fetch_util.js
rename to extensions/fetch/01_fetch_util.js
diff --git a/op_crates/fetch/11_streams.js b/extensions/fetch/11_streams.js
similarity index 100%
rename from op_crates/fetch/11_streams.js
rename to extensions/fetch/11_streams.js
diff --git a/op_crates/fetch/11_streams_types.d.ts b/extensions/fetch/11_streams_types.d.ts
similarity index 100%
rename from op_crates/fetch/11_streams_types.d.ts
rename to extensions/fetch/11_streams_types.d.ts
diff --git a/op_crates/fetch/20_headers.js b/extensions/fetch/20_headers.js
similarity index 100%
rename from op_crates/fetch/20_headers.js
rename to extensions/fetch/20_headers.js
diff --git a/op_crates/fetch/21_formdata.js b/extensions/fetch/21_formdata.js
similarity index 100%
rename from op_crates/fetch/21_formdata.js
rename to extensions/fetch/21_formdata.js
diff --git a/op_crates/fetch/22_body.js b/extensions/fetch/22_body.js
similarity index 100%
rename from op_crates/fetch/22_body.js
rename to extensions/fetch/22_body.js
diff --git a/op_crates/fetch/22_http_client.js b/extensions/fetch/22_http_client.js
similarity index 100%
rename from op_crates/fetch/22_http_client.js
rename to extensions/fetch/22_http_client.js
diff --git a/op_crates/fetch/23_request.js b/extensions/fetch/23_request.js
similarity index 100%
rename from op_crates/fetch/23_request.js
rename to extensions/fetch/23_request.js
diff --git a/op_crates/fetch/23_response.js b/extensions/fetch/23_response.js
similarity index 100%
rename from op_crates/fetch/23_response.js
rename to extensions/fetch/23_response.js
diff --git a/op_crates/fetch/26_fetch.js b/extensions/fetch/26_fetch.js
similarity index 100%
rename from op_crates/fetch/26_fetch.js
rename to extensions/fetch/26_fetch.js
diff --git a/op_crates/fetch/Cargo.toml b/extensions/fetch/Cargo.toml
similarity index 100%
rename from op_crates/fetch/Cargo.toml
rename to extensions/fetch/Cargo.toml
diff --git a/op_crates/fetch/README.md b/extensions/fetch/README.md
similarity index 100%
rename from op_crates/fetch/README.md
rename to extensions/fetch/README.md
diff --git a/op_crates/fetch/internal.d.ts b/extensions/fetch/internal.d.ts
similarity index 100%
rename from op_crates/fetch/internal.d.ts
rename to extensions/fetch/internal.d.ts
diff --git a/op_crates/fetch/lib.deno_fetch.d.ts b/extensions/fetch/lib.deno_fetch.d.ts
similarity index 100%
rename from op_crates/fetch/lib.deno_fetch.d.ts
rename to extensions/fetch/lib.deno_fetch.d.ts
diff --git a/op_crates/fetch/lib.rs b/extensions/fetch/lib.rs
similarity index 99%
rename from op_crates/fetch/lib.rs
rename to extensions/fetch/lib.rs
index 861fc6e54d..36a5b5afdf 100644
--- a/op_crates/fetch/lib.rs
+++ b/extensions/fetch/lib.rs
@@ -58,7 +58,7 @@ pub fn init<P: FetchPermissions + 'static>(
 ) -> Extension {
   Extension::builder()
     .js(include_js_files!(
-      prefix "deno:op_crates/fetch",
+      prefix "deno:extensions/fetch",
       "01_fetch_util.js",
       "11_streams.js",
       "20_headers.js",
diff --git a/op_crates/file/01_file.js b/extensions/file/01_file.js
similarity index 100%
rename from op_crates/file/01_file.js
rename to extensions/file/01_file.js
diff --git a/op_crates/file/02_filereader.js b/extensions/file/02_filereader.js
similarity index 100%
rename from op_crates/file/02_filereader.js
rename to extensions/file/02_filereader.js
diff --git a/op_crates/file/03_blob_url.js b/extensions/file/03_blob_url.js
similarity index 100%
rename from op_crates/file/03_blob_url.js
rename to extensions/file/03_blob_url.js
diff --git a/op_crates/file/Cargo.toml b/extensions/file/Cargo.toml
similarity index 100%
rename from op_crates/file/Cargo.toml
rename to extensions/file/Cargo.toml
diff --git a/op_crates/file/README.md b/extensions/file/README.md
similarity index 100%
rename from op_crates/file/README.md
rename to extensions/file/README.md
diff --git a/op_crates/file/internal.d.ts b/extensions/file/internal.d.ts
similarity index 100%
rename from op_crates/file/internal.d.ts
rename to extensions/file/internal.d.ts
diff --git a/op_crates/file/lib.deno_file.d.ts b/extensions/file/lib.deno_file.d.ts
similarity index 100%
rename from op_crates/file/lib.deno_file.d.ts
rename to extensions/file/lib.deno_file.d.ts
diff --git a/op_crates/file/lib.rs b/extensions/file/lib.rs
similarity index 98%
rename from op_crates/file/lib.rs
rename to extensions/file/lib.rs
index ccde34adae..78e3db8147 100644
--- a/op_crates/file/lib.rs
+++ b/extensions/file/lib.rs
@@ -90,7 +90,7 @@ pub fn init(
 ) -> Extension {
   Extension::builder()
     .js(include_js_files!(
-      prefix "deno:op_crates/file",
+      prefix "deno:extensions/file",
       "01_file.js",
       "02_filereader.js",
       "03_blob_url.js",
diff --git a/op_crates/timers/01_timers.js b/extensions/timers/01_timers.js
similarity index 99%
rename from op_crates/timers/01_timers.js
rename to extensions/timers/01_timers.js
index d6d6436fee..756e388751 100644
--- a/op_crates/timers/01_timers.js
+++ b/extensions/timers/01_timers.js
@@ -4,7 +4,7 @@
 ((window) => {
   const core = window.Deno.core;
 
-  // Shamelessly cribbed from op_crates/fetch/11_streams.js
+  // Shamelessly cribbed from extensions/fetch/11_streams.js
   class AssertionError extends Error {
     constructor(msg) {
       super(msg);
diff --git a/op_crates/timers/Cargo.toml b/extensions/timers/Cargo.toml
similarity index 100%
rename from op_crates/timers/Cargo.toml
rename to extensions/timers/Cargo.toml
diff --git a/op_crates/timers/README.md b/extensions/timers/README.md
similarity index 100%
rename from op_crates/timers/README.md
rename to extensions/timers/README.md
diff --git a/op_crates/timers/lib.rs b/extensions/timers/lib.rs
similarity index 99%
rename from op_crates/timers/lib.rs
rename to extensions/timers/lib.rs
index 62f5953fa2..5a9b28bb6f 100644
--- a/op_crates/timers/lib.rs
+++ b/extensions/timers/lib.rs
@@ -44,7 +44,7 @@ impl TimersPermission for NoTimersPermission {
 pub fn init<P: TimersPermission + 'static>() -> Extension {
   Extension::builder()
     .js(include_js_files!(
-      prefix "deno:op_crates/timers",
+      prefix "deno:extensions/timers",
       "01_timers.js",
     ))
     .ops(vec![
diff --git a/op_crates/url/00_url.js b/extensions/url/00_url.js
similarity index 100%
rename from op_crates/url/00_url.js
rename to extensions/url/00_url.js
diff --git a/op_crates/url/Cargo.toml b/extensions/url/Cargo.toml
similarity index 100%
rename from op_crates/url/Cargo.toml
rename to extensions/url/Cargo.toml
diff --git a/op_crates/url/README.md b/extensions/url/README.md
similarity index 100%
rename from op_crates/url/README.md
rename to extensions/url/README.md
diff --git a/op_crates/url/benches/url_ops.rs b/extensions/url/benches/url_ops.rs
similarity index 100%
rename from op_crates/url/benches/url_ops.rs
rename to extensions/url/benches/url_ops.rs
diff --git a/op_crates/url/internal.d.ts b/extensions/url/internal.d.ts
similarity index 100%
rename from op_crates/url/internal.d.ts
rename to extensions/url/internal.d.ts
diff --git a/op_crates/url/lib.deno_url.d.ts b/extensions/url/lib.deno_url.d.ts
similarity index 100%
rename from op_crates/url/lib.deno_url.d.ts
rename to extensions/url/lib.deno_url.d.ts
diff --git a/op_crates/url/lib.rs b/extensions/url/lib.rs
similarity index 99%
rename from op_crates/url/lib.rs
rename to extensions/url/lib.rs
index 1d7a9b08be..a4a42cd0cc 100644
--- a/op_crates/url/lib.rs
+++ b/extensions/url/lib.rs
@@ -19,7 +19,7 @@ use std::path::PathBuf;
 pub fn init() -> Extension {
   Extension::builder()
     .js(include_js_files!(
-      prefix "deno:op_crates/url",
+      prefix "deno:extensions/url",
       "00_url.js",
     ))
     .ops(vec![
diff --git a/op_crates/web/00_infra.js b/extensions/web/00_infra.js
similarity index 100%
rename from op_crates/web/00_infra.js
rename to extensions/web/00_infra.js
diff --git a/op_crates/web/01_dom_exception.js b/extensions/web/01_dom_exception.js
similarity index 100%
rename from op_crates/web/01_dom_exception.js
rename to extensions/web/01_dom_exception.js
diff --git a/op_crates/web/01_mimesniff.js b/extensions/web/01_mimesniff.js
similarity index 100%
rename from op_crates/web/01_mimesniff.js
rename to extensions/web/01_mimesniff.js
diff --git a/op_crates/web/02_event.js b/extensions/web/02_event.js
similarity index 100%
rename from op_crates/web/02_event.js
rename to extensions/web/02_event.js
diff --git a/op_crates/web/03_abort_signal.js b/extensions/web/03_abort_signal.js
similarity index 100%
rename from op_crates/web/03_abort_signal.js
rename to extensions/web/03_abort_signal.js
diff --git a/op_crates/web/04_global_interfaces.js b/extensions/web/04_global_interfaces.js
similarity index 100%
rename from op_crates/web/04_global_interfaces.js
rename to extensions/web/04_global_interfaces.js
diff --git a/op_crates/web/08_text_encoding.js b/extensions/web/08_text_encoding.js
similarity index 100%
rename from op_crates/web/08_text_encoding.js
rename to extensions/web/08_text_encoding.js
diff --git a/op_crates/web/12_location.js b/extensions/web/12_location.js
similarity index 100%
rename from op_crates/web/12_location.js
rename to extensions/web/12_location.js
diff --git a/op_crates/web/Cargo.toml b/extensions/web/Cargo.toml
similarity index 100%
rename from op_crates/web/Cargo.toml
rename to extensions/web/Cargo.toml
diff --git a/op_crates/web/README.md b/extensions/web/README.md
similarity index 100%
rename from op_crates/web/README.md
rename to extensions/web/README.md
diff --git a/op_crates/web/internal.d.ts b/extensions/web/internal.d.ts
similarity index 100%
rename from op_crates/web/internal.d.ts
rename to extensions/web/internal.d.ts
diff --git a/op_crates/web/lib.deno_web.d.ts b/extensions/web/lib.deno_web.d.ts
similarity index 100%
rename from op_crates/web/lib.deno_web.d.ts
rename to extensions/web/lib.deno_web.d.ts
diff --git a/op_crates/web/lib.rs b/extensions/web/lib.rs
similarity index 94%
rename from op_crates/web/lib.rs
rename to extensions/web/lib.rs
index a2612743e7..0d2dbbd789 100644
--- a/op_crates/web/lib.rs
+++ b/extensions/web/lib.rs
@@ -8,7 +8,7 @@ use std::path::PathBuf;
 pub fn init() -> Extension {
   Extension::builder()
     .js(include_js_files!(
-      prefix "deno:op_crates/web",
+      prefix "deno:extensions/web",
       "00_infra.js",
       "01_dom_exception.js",
       "01_mimesniff.js",
diff --git a/op_crates/webgpu/01_webgpu.js b/extensions/webgpu/01_webgpu.js
similarity index 100%
rename from op_crates/webgpu/01_webgpu.js
rename to extensions/webgpu/01_webgpu.js
diff --git a/op_crates/webgpu/02_idl_types.js b/extensions/webgpu/02_idl_types.js
similarity index 100%
rename from op_crates/webgpu/02_idl_types.js
rename to extensions/webgpu/02_idl_types.js
diff --git a/op_crates/webgpu/Cargo.toml b/extensions/webgpu/Cargo.toml
similarity index 100%
rename from op_crates/webgpu/Cargo.toml
rename to extensions/webgpu/Cargo.toml
diff --git a/op_crates/webgpu/README.md b/extensions/webgpu/README.md
similarity index 100%
rename from op_crates/webgpu/README.md
rename to extensions/webgpu/README.md
diff --git a/op_crates/webgpu/binding.rs b/extensions/webgpu/binding.rs
similarity index 100%
rename from op_crates/webgpu/binding.rs
rename to extensions/webgpu/binding.rs
diff --git a/op_crates/webgpu/buffer.rs b/extensions/webgpu/buffer.rs
similarity index 100%
rename from op_crates/webgpu/buffer.rs
rename to extensions/webgpu/buffer.rs
diff --git a/op_crates/webgpu/bundle.rs b/extensions/webgpu/bundle.rs
similarity index 100%
rename from op_crates/webgpu/bundle.rs
rename to extensions/webgpu/bundle.rs
diff --git a/op_crates/webgpu/command_encoder.rs b/extensions/webgpu/command_encoder.rs
similarity index 100%
rename from op_crates/webgpu/command_encoder.rs
rename to extensions/webgpu/command_encoder.rs
diff --git a/op_crates/webgpu/compute_pass.rs b/extensions/webgpu/compute_pass.rs
similarity index 100%
rename from op_crates/webgpu/compute_pass.rs
rename to extensions/webgpu/compute_pass.rs
diff --git a/op_crates/webgpu/error.rs b/extensions/webgpu/error.rs
similarity index 100%
rename from op_crates/webgpu/error.rs
rename to extensions/webgpu/error.rs
diff --git a/op_crates/webgpu/lib.deno_webgpu.d.ts b/extensions/webgpu/lib.deno_webgpu.d.ts
similarity index 100%
rename from op_crates/webgpu/lib.deno_webgpu.d.ts
rename to extensions/webgpu/lib.deno_webgpu.d.ts
diff --git a/op_crates/webgpu/lib.rs b/extensions/webgpu/lib.rs
similarity index 99%
rename from op_crates/webgpu/lib.rs
rename to extensions/webgpu/lib.rs
index b5b2905b2f..906c4876e2 100644
--- a/op_crates/webgpu/lib.rs
+++ b/extensions/webgpu/lib.rs
@@ -97,7 +97,7 @@ impl Resource for WebGpuQuerySet {
 pub fn init(unstable: bool) -> Extension {
   Extension::builder()
     .js(include_js_files!(
-      prefix "deno:op_crates/webgpu",
+      prefix "deno:extensions/webgpu",
       "01_webgpu.js",
       "02_idl_types.js",
     ))
diff --git a/op_crates/webgpu/pipeline.rs b/extensions/webgpu/pipeline.rs
similarity index 100%
rename from op_crates/webgpu/pipeline.rs
rename to extensions/webgpu/pipeline.rs
diff --git a/op_crates/webgpu/queue.rs b/extensions/webgpu/queue.rs
similarity index 100%
rename from op_crates/webgpu/queue.rs
rename to extensions/webgpu/queue.rs
diff --git a/op_crates/webgpu/render_pass.rs b/extensions/webgpu/render_pass.rs
similarity index 100%
rename from op_crates/webgpu/render_pass.rs
rename to extensions/webgpu/render_pass.rs
diff --git a/op_crates/webgpu/sampler.rs b/extensions/webgpu/sampler.rs
similarity index 100%
rename from op_crates/webgpu/sampler.rs
rename to extensions/webgpu/sampler.rs
diff --git a/op_crates/webgpu/shader.rs b/extensions/webgpu/shader.rs
similarity index 100%
rename from op_crates/webgpu/shader.rs
rename to extensions/webgpu/shader.rs
diff --git a/op_crates/webgpu/texture.rs b/extensions/webgpu/texture.rs
similarity index 100%
rename from op_crates/webgpu/texture.rs
rename to extensions/webgpu/texture.rs
diff --git a/op_crates/webgpu/webgpu.idl b/extensions/webgpu/webgpu.idl
similarity index 100%
rename from op_crates/webgpu/webgpu.idl
rename to extensions/webgpu/webgpu.idl
diff --git a/op_crates/webidl/00_webidl.js b/extensions/webidl/00_webidl.js
similarity index 100%
rename from op_crates/webidl/00_webidl.js
rename to extensions/webidl/00_webidl.js
diff --git a/op_crates/webidl/Cargo.toml b/extensions/webidl/Cargo.toml
similarity index 100%
rename from op_crates/webidl/Cargo.toml
rename to extensions/webidl/Cargo.toml
diff --git a/op_crates/webidl/README.md b/extensions/webidl/README.md
similarity index 100%
rename from op_crates/webidl/README.md
rename to extensions/webidl/README.md
diff --git a/op_crates/webidl/internal.d.ts b/extensions/webidl/internal.d.ts
similarity index 100%
rename from op_crates/webidl/internal.d.ts
rename to extensions/webidl/internal.d.ts
diff --git a/op_crates/webidl/lib.rs b/extensions/webidl/lib.rs
similarity index 88%
rename from op_crates/webidl/lib.rs
rename to extensions/webidl/lib.rs
index c73c60bab1..fa243c9f1e 100644
--- a/op_crates/webidl/lib.rs
+++ b/extensions/webidl/lib.rs
@@ -7,7 +7,7 @@ use deno_core::Extension;
 pub fn init() -> Extension {
   Extension::builder()
     .js(include_js_files!(
-      prefix "deno:op_crates/webidl",
+      prefix "deno:extensions/webidl",
       "00_webidl.js",
     ))
     .build()
diff --git a/op_crates/websocket/01_websocket.js b/extensions/websocket/01_websocket.js
similarity index 100%
rename from op_crates/websocket/01_websocket.js
rename to extensions/websocket/01_websocket.js
diff --git a/op_crates/websocket/Cargo.toml b/extensions/websocket/Cargo.toml
similarity index 100%
rename from op_crates/websocket/Cargo.toml
rename to extensions/websocket/Cargo.toml
diff --git a/op_crates/websocket/README.md b/extensions/websocket/README.md
similarity index 100%
rename from op_crates/websocket/README.md
rename to extensions/websocket/README.md
diff --git a/op_crates/websocket/lib.deno_websocket.d.ts b/extensions/websocket/lib.deno_websocket.d.ts
similarity index 100%
rename from op_crates/websocket/lib.deno_websocket.d.ts
rename to extensions/websocket/lib.deno_websocket.d.ts
diff --git a/op_crates/websocket/lib.rs b/extensions/websocket/lib.rs
similarity index 99%
rename from op_crates/websocket/lib.rs
rename to extensions/websocket/lib.rs
index acf823775d..8dfa26c478 100644
--- a/op_crates/websocket/lib.rs
+++ b/extensions/websocket/lib.rs
@@ -339,7 +339,7 @@ pub fn init<P: WebSocketPermissions + 'static>(
 ) -> Extension {
   Extension::builder()
     .js(include_js_files!(
-      prefix "deno:op_crates/websocket",
+      prefix "deno:extensions/websocket",
       "01_websocket.js",
     ))
     .ops(vec![
diff --git a/runtime/Cargo.toml b/runtime/Cargo.toml
index 21294219b7..8acd61f7e3 100644
--- a/runtime/Cargo.toml
+++ b/runtime/Cargo.toml
@@ -18,34 +18,34 @@ name = "hello_runtime"
 path = "examples/hello_runtime.rs"
 
 [build-dependencies]
-deno_console = { path = "../op_crates/console", version = "0.5.0" }
+deno_console = { path = "../extensions/console", version = "0.5.0" }
 deno_core = { path = "../core", version = "0.86.0" }
-deno_crypto = { path = "../op_crates/crypto", version = "0.19.0" }
-deno_fetch = { path = "../op_crates/fetch", version = "0.27.0" }
-deno_file = { path = "../op_crates/file", version = "0.4.0" }
-deno_timers = { path = "../op_crates/timers", version = "0.3.0" }
-deno_url = { path = "../op_crates/url", version = "0.5.0" }
-deno_web = { path = "../op_crates/web", version = "0.35.0" }
-deno_webgpu = { path = "../op_crates/webgpu", version = "0.6.0" }
-deno_webidl = { path = "../op_crates/webidl", version = "0.5.0" }
-deno_websocket = { path = "../op_crates/websocket", version = "0.10.0" }
+deno_crypto = { path = "../extensions/crypto", version = "0.19.0" }
+deno_fetch = { path = "../extensions/fetch", version = "0.27.0" }
+deno_file = { path = "../extensions/file", version = "0.4.0" }
+deno_timers = { path = "../extensions/timers", version = "0.3.0" }
+deno_url = { path = "../extensions/url", version = "0.5.0" }
+deno_web = { path = "../extensions/web", version = "0.35.0" }
+deno_webgpu = { path = "../extensions/webgpu", version = "0.6.0" }
+deno_webidl = { path = "../extensions/webidl", version = "0.5.0" }
+deno_websocket = { path = "../extensions/websocket", version = "0.10.0" }
 
 [target.'cfg(windows)'.build-dependencies]
 winres = "0.1.11"
 winapi = "0.3.9"
 
 [dependencies]
-deno_console = { path = "../op_crates/console", version = "0.5.0" }
+deno_console = { path = "../extensions/console", version = "0.5.0" }
 deno_core = { path = "../core", version = "0.86.0" }
-deno_crypto = { path = "../op_crates/crypto", version = "0.19.0" }
-deno_fetch = { path = "../op_crates/fetch", version = "0.27.0" }
-deno_file = { path = "../op_crates/file", version = "0.4.0" }
-deno_timers = { path = "../op_crates/timers", version = "0.3.0" }
-deno_url = { path = "../op_crates/url", version = "0.5.0" }
-deno_web = { path = "../op_crates/web", version = "0.35.0" }
-deno_webgpu = { path = "../op_crates/webgpu", version = "0.6.0" }
-deno_webidl = { path = "../op_crates/webidl", version = "0.5.0" }
-deno_websocket = { path = "../op_crates/websocket", version = "0.10.0" }
+deno_crypto = { path = "../extensions/crypto", version = "0.19.0" }
+deno_fetch = { path = "../extensions/fetch", version = "0.27.0" }
+deno_file = { path = "../extensions/file", version = "0.4.0" }
+deno_timers = { path = "../extensions/timers", version = "0.3.0" }
+deno_url = { path = "../extensions/url", version = "0.5.0" }
+deno_web = { path = "../extensions/web", version = "0.35.0" }
+deno_webgpu = { path = "../extensions/webgpu", version = "0.6.0" }
+deno_webidl = { path = "../extensions/webidl", version = "0.5.0" }
+deno_websocket = { path = "../extensions/websocket", version = "0.10.0" }
 
 atty = "0.2.14"
 bytes = "1"
diff --git a/tools/cut_a_release.md b/tools/cut_a_release.md
index 365ed24020..ec5853819c 100644
--- a/tools/cut_a_release.md
+++ b/tools/cut_a_release.md
@@ -4,7 +4,7 @@
 release from) should be frozen and no commits should land until the release is
 cut.**
 
-1. Create a PR that bumps versions of all crates in `op_crates` and `runtime`
+1. Create a PR that bumps versions of all crates in `extensions` and `runtime`
    directories.
 
 To determine if you should bump a crate a minor version instead of a patch
@@ -32,9 +32,9 @@ between the crates, it must be done in specific order:
 
 - `deno_core` - all crates depend on `deno_core` so it must always be published
   first
-- crates in `op_crates/` directory - there is no specific order required for
+- crates in `extensions/` directory - there is no specific order required for
   those
-- `runtime` - this crate depends on `deno_core` and all crates in `op_crates/`
+- `runtime` - this crate depends on `deno_core` and all crates in `extensions/`
   directory
 
 If there are any problems when you publish, that require you to change the code,