diff --git a/Cargo.lock b/Cargo.lock
index 919613f..c39b2ad 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -2,6 +2,21 @@
 # It is not intended for manual editing.
 version = 4
 
+[[package]]
+name = "addr2line"
+version = "0.24.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "dfbe277e56a376000877090da837660b4427aad530e3028d44e0bffe4f89a1c1"
+dependencies = [
+ "gimli",
+]
+
+[[package]]
+name = "adler2"
+version = "2.0.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "320119579fcad9c21884f5c4861d16174d0e06250625266f50fe6898340abefa"
+
 [[package]]
 name = "aho-corasick"
 version = "1.1.3"
@@ -47,7 +62,7 @@ version = "1.1.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "79947af37f4177cfead1110013d678905c37501914fba0efea834c3fe9a8d60c"
 dependencies = [
- "windows-sys",
+ "windows-sys 0.59.0",
 ]
 
 [[package]]
@@ -58,7 +73,7 @@ checksum = "ca3534e77181a9cc07539ad51f2141fe32f6c3ffd4df76db8ad92346b003ae4e"
 dependencies = [
  "anstyle",
  "once_cell",
- "windows-sys",
+ "windows-sys 0.59.0",
 ]
 
 [[package]]
@@ -67,6 +82,27 @@ version = "1.0.98"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "e16d2d3311acee920a9eb8d33b8cbc1787ce4a264e85f964c2404b969bdcd487"
 
+[[package]]
+name = "autocfg"
+version = "1.5.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "c08606f8c3cbf4ce6ec8e28fb0014a2c086708fe954eaa885384a6165172e7e8"
+
+[[package]]
+name = "backtrace"
+version = "0.3.75"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "6806a6321ec58106fea15becdad98371e28d92ccbc7c8f1b3b6dd724fe8f1002"
+dependencies = [
+ "addr2line",
+ "cfg-if",
+ "libc",
+ "miniz_oxide",
+ "object",
+ "rustc-demangle",
+ "windows-targets",
+]
+
 [[package]]
 name = "bitflags"
 version = "2.9.0"
@@ -79,6 +115,12 @@ version = "3.17.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "1628fb46dfa0b37568d12e5edd512553eccf6a22a78e8bde00bb4aed84d5bdbf"
 
+[[package]]
+name = "bytes"
+version = "1.10.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "d71b6127be86fdcfddb610f7182ac57211d4b18a3e9c82eb2d17662f2227ad6a"
+
 [[package]]
 name = "cfg-if"
 version = "1.0.0"
@@ -141,7 +183,7 @@ dependencies = [
  "libc",
  "once_cell",
  "unicode-width",
- "windows-sys",
+ "windows-sys 0.59.0",
 ]
 
 [[package]]
@@ -163,7 +205,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "976dd42dc7e85965fe702eb8164f21f450704bdde31faefd6471dba214cb594e"
 dependencies = [
  "libc",
- "windows-sys",
+ "windows-sys 0.59.0",
 ]
 
 [[package]]
@@ -181,9 +223,15 @@ dependencies = [
  "cfg-if",
  "libc",
  "r-efi",
- "wasi",
+ "wasi 0.14.2+wasi-0.2.4",
 ]
 
+[[package]]
+name = "gimli"
+version = "0.31.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "07e28edb80900c19c28f1072f2e8aeca7fa06b23cd4169cefe1af5aa3260783f"
+
 [[package]]
 name = "hashbrown"
 version = "0.15.3"
@@ -221,6 +269,17 @@ dependencies = [
  "web-time",
 ]
 
+[[package]]
+name = "io-uring"
+version = "0.7.8"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "b86e202f00093dcba4275d4636b93ef9dd75d025ae560d2521b45ea28ab49013"
+dependencies = [
+ "bitflags",
+ "cfg-if",
+ "libc",
+]
+
 [[package]]
 name = "is_terminal_polyfill"
 version = "1.70.1"
@@ -255,6 +314,16 @@ version = "0.9.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "cd945864f07fe9f5371a27ad7b52a172b4b499999f1d97574c9fa68373937e12"
 
+[[package]]
+name = "lock_api"
+version = "0.4.13"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "96936507f153605bddfcda068dd804796c84324ed2510809e5b2a624c81da765"
+dependencies = [
+ "autocfg",
+ "scopeguard",
+]
+
 [[package]]
 name = "log"
 version = "0.4.27"
@@ -276,6 +345,26 @@ version = "2.7.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "78ca9ab1a0babb1e7d5695e3530886289c18cf2f87ec19a575a0abdce112e3a3"
 
+[[package]]
+name = "miniz_oxide"
+version = "0.8.9"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "1fa76a2c86f704bdb222d66965fb3d63269ce38518b83cb0575fca855ebb6316"
+dependencies = [
+ "adler2",
+]
+
+[[package]]
+name = "mio"
+version = "1.0.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "78bed444cc8a2160f01cbcf811ef18cac863ad68ae8ca62092e8db51d51c761c"
+dependencies = [
+ "libc",
+ "wasi 0.11.1+wasi-snapshot-preview1",
+ "windows-sys 0.59.0",
+]
+
 [[package]]
 name = "nu-ansi-term"
 version = "0.46.0"
@@ -292,6 +381,15 @@ version = "0.4.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "830b246a0e5f20af87141b25c173cd1b609bd7779a4617d6ec582abaf90870f3"
 
+[[package]]
+name = "object"
+version = "0.36.7"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "62948e14d923ea95ea2c7c86c71013138b66525b86bdc08d2dcc262bdb497b87"
+dependencies = [
+ "memchr",
+]
+
 [[package]]
 name = "once_cell"
 version = "1.21.3"
@@ -304,6 +402,29 @@ version = "0.1.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "b15813163c1d831bf4a13c3610c05c0d03b39feb07f7e09fa234dac9b15aaf39"
 
+[[package]]
+name = "parking_lot"
+version = "0.12.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "70d58bf43669b5795d1576d0641cfb6fbb2057bf629506267a92807158584a13"
+dependencies = [
+ "lock_api",
+ "parking_lot_core",
+]
+
+[[package]]
+name = "parking_lot_core"
+version = "0.9.11"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "bc838d2a56b5b1a6c25f55575dfc605fabb63bb2365f6c2353ef9159aa69e4a5"
+dependencies = [
+ "cfg-if",
+ "libc",
+ "redox_syscall",
+ "smallvec",
+ "windows-targets",
+]
+
 [[package]]
 name = "pick"
 version = "0.0.5"
@@ -316,6 +437,7 @@ dependencies = [
  "regex",
  "serde",
  "tempfile",
+ "tokio",
  "toml",
  "tracing",
  "tracing-subscriber",
@@ -358,6 +480,15 @@ version = "5.2.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "74765f6d916ee2faa39bc8e68e4f3ed8949b48cccdac59983d287a7cb71ce9c5"
 
+[[package]]
+name = "redox_syscall"
+version = "0.5.13"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "0d04b7d0ee6b4a0207a0a7adb104d23ecb0b47d6beae7152d0fa34b692b29fd6"
+dependencies = [
+ "bitflags",
+]
+
 [[package]]
 name = "regex"
 version = "1.11.1"
@@ -402,6 +533,12 @@ version = "0.8.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "2b15c43186be67a4fd63bee50d0303afffcef381492ebe2c5d87f324e1b8815c"
 
+[[package]]
+name = "rustc-demangle"
+version = "0.1.25"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "989e6739f80c4ad5b13e0fd7fe89531180375b18520cc8c82080e4dc4035b84f"
+
 [[package]]
 name = "rustix"
 version = "1.0.7"
@@ -412,7 +549,7 @@ dependencies = [
  "errno",
  "libc",
  "linux-raw-sys",
- "windows-sys",
+ "windows-sys 0.59.0",
 ]
 
 [[package]]
@@ -424,6 +561,12 @@ dependencies = [
  "winapi-util",
 ]
 
+[[package]]
+name = "scopeguard"
+version = "1.2.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "94143f37725109f92c262ed2cf5e59bce7498c01bcc1502d7b9afe439a4e9f49"
+
 [[package]]
 name = "serde"
 version = "1.0.219"
@@ -462,12 +605,37 @@ dependencies = [
  "lazy_static",
 ]
 
+[[package]]
+name = "signal-hook-registry"
+version = "1.4.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "9203b8055f63a2a00e2f593bb0510367fe707d7ff1e5c872de2f537b339e5410"
+dependencies = [
+ "libc",
+]
+
+[[package]]
+name = "slab"
+version = "0.4.10"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "04dc19736151f35336d325007ac991178d504a119863a2fcb3758cdb5e52c50d"
+
 [[package]]
 name = "smallvec"
 version = "1.15.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "8917285742e9f3e1683f0a9c4e6b57960b7314d0b08d30d1ecd426713ee2eee9"
 
+[[package]]
+name = "socket2"
+version = "0.5.10"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "e22376abed350d73dd1cd119b57ffccad95b4e585a7cda43e286245ce23c0678"
+dependencies = [
+ "libc",
+ "windows-sys 0.52.0",
+]
+
 [[package]]
 name = "strsim"
 version = "0.11.1"
@@ -495,7 +663,7 @@ dependencies = [
  "getrandom",
  "once_cell",
  "rustix",
- "windows-sys",
+ "windows-sys 0.59.0",
 ]
 
 [[package]]
@@ -508,6 +676,37 @@ dependencies = [
  "once_cell",
 ]
 
+[[package]]
+name = "tokio"
+version = "1.46.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "0cc3a2344dafbe23a245241fe8b09735b521110d30fcefbbd5feb1797ca35d17"
+dependencies = [
+ "backtrace",
+ "bytes",
+ "io-uring",
+ "libc",
+ "mio",
+ "parking_lot",
+ "pin-project-lite",
+ "signal-hook-registry",
+ "slab",
+ "socket2",
+ "tokio-macros",
+ "windows-sys 0.52.0",
+]
+
+[[package]]
+name = "tokio-macros"
+version = "2.5.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "6e06d43f1345a3bcd39f6a56dbb7dcab2ba47e68e8ac134855e7e2bdbaf8cab8"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "syn",
+]
+
 [[package]]
 name = "toml"
 version = "0.8.22"
@@ -651,6 +850,12 @@ dependencies = [
  "winapi-util",
 ]
 
+[[package]]
+name = "wasi"
+version = "0.11.1+wasi-snapshot-preview1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ccf3ec651a847eb01de73ccad15eb7d99f80485de043efb2f370cd654f4ea44b"
+
 [[package]]
 name = "wasi"
 version = "0.14.2+wasi-0.2.4"
@@ -749,7 +954,7 @@ version = "0.1.9"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "cf221c93e13a30d793f7645a0e7762c55d169dbb0a49671918a2319d289b10bb"
 dependencies = [
- "windows-sys",
+ "windows-sys 0.59.0",
 ]
 
 [[package]]
@@ -758,6 +963,15 @@ version = "0.4.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "712e227841d057c1ee1cd2fb22fa7e5a5461ae8e48fa2ca79ec42cfc1931183f"
 
+[[package]]
+name = "windows-sys"
+version = "0.52.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "282be5f36a8ce781fad8c8ae18fa3f9beff57ec1b52cb3de0789201425d9a33d"
+dependencies = [
+ "windows-targets",
+]
+
 [[package]]
 name = "windows-sys"
 version = "0.59.0"
diff --git a/Cargo.toml b/Cargo.toml
index 4e6f418..4930160 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -70,3 +70,4 @@ walkdir = "2.5.0"
 tempfile = "3.10.1"
 anyhow = "1.0.98"
 indicatif = { version = "0.17.11", features = ["improved_unicode"] }
+tokio = { version = "1.46.1", features = ["full"] }
diff --git a/src/logging.rs b/src/logging.rs
index a0990fb..81c9896 100644
--- a/src/logging.rs
+++ b/src/logging.rs
@@ -140,7 +140,7 @@ impl LoggingPreset {
 /// 	log: LogCli,
 /// }
 /// ```
-#[derive(Parser, Debug)]
+#[derive(Parser, Debug, Clone)]
 pub struct LogCli {
 	/// Increase verbosity (can be repeated)
 	#[arg(short, action = clap::ArgAction::Count,global = true)]
diff --git a/src/main.rs b/src/main.rs
index 0768248..30765d7 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -1,9 +1,10 @@
-use anyhow::Result;
+use anyhow::{Error, Result};
 use clap::Parser;
 use indicatif::ProgressIterator;
 use logging::LogCli;
 use std::{path::PathBuf, process::ExitCode};
 use style::progress_style;
+use tokio::task::JoinSet;
 use tool::PickTool;
 use tracing::{debug, error, trace};
 
@@ -15,7 +16,6 @@ pub mod tool;
 mod prepare;
 
 // count size of files to process
-// parallelism
 // capture/print stdout/stderr
 // workdir vs root
 // package & auto-build
@@ -37,7 +37,7 @@ mod prepare;
 // warn when no matches
 
 /// Pick is a utility that processes files based on pattern matching rules.
-#[derive(Parser, Debug)]
+#[derive(Parser, Debug, Clone)]
 #[command(version, about, long_about = None, styles=style::get_styles())]
 struct Cli {
 	#[command(flatten)]
@@ -59,10 +59,6 @@ fn main() -> ExitCode {
 }
 
 fn main_inner() -> Result<ExitCode> {
-	//
-	// MARK: setup
-	//
-
 	let mut cli = Cli::parse();
 	cli.manifest = std::path::absolute(&cli.manifest)?;
 	let cli = cli;
@@ -81,18 +77,55 @@ fn main_inner() -> Result<ExitCode> {
 
 	let queue = prepare::list_queue(&manifest, &work_dir)?;
 
-	#[expect(clippy::unwrap_used)] // Fix later
-	let bash = manifest.tool.bash.as_ref().unwrap();
-	bash.before(&cli.manifest, &manifest.config)?;
+	let bash = {
+		#[expect(clippy::unwrap_used)] // Fix later
+		let bash = manifest.tool.bash.clone().unwrap();
+		bash.before(&cli.manifest, &manifest.config)?;
 
-	for ctx in queue
-		.into_iter()
-		.progress_with_style(progress_style())
-		.with_message("Processing")
-	{
-		trace!("Running `{}` on {}", ctx.task, ctx.path_rel_str);
-		bash.run(&cli.manifest, &manifest.config, ctx)?;
-	}
+		bash
+	};
+
+	let max_tasks = manifest.config.threads.map(|x| x.get()).unwrap_or(1);
+
+	debug!("Starting runtime with {max_tasks} threads");
+	let rt = tokio::runtime::Builder::new_multi_thread()
+		.worker_threads(3)
+		.max_blocking_threads(max_tasks)
+		.build()
+		.unwrap();
+
+	let rt_cli = cli.clone();
+	let rt_manifest = manifest.clone();
+	let rt_bash = bash.clone();
+	rt.block_on(async move {
+		let mut js: JoinSet<Result<()>> = JoinSet::new();
+
+		for ctx in queue
+			.into_iter()
+			.progress_with_style(progress_style())
+			.with_message("Processing")
+		{
+			trace!("Running `{}` on {}", ctx.task, ctx.path_rel_str);
+
+			let cli = rt_cli.clone();
+			let manifest = rt_manifest.clone();
+			let bash = rt_bash.clone();
+			js.spawn_blocking(move || {
+				bash.run(&cli.manifest, &manifest.config, ctx)?;
+				return Ok(());
+			});
+
+			if js.len() >= max_tasks {
+				js.join_next().await.unwrap()??;
+			}
+		}
+
+		while let Some(x) = js.join_next().await {
+			x.unwrap()?
+		}
+
+		return Ok::<_, Error>(());
+	})?;
 
 	bash.after(&cli.manifest, &manifest.config)?;
 
diff --git a/src/manifest/types.rs b/src/manifest/types.rs
index 6f2e3ce..611cedb 100644
--- a/src/manifest/types.rs
+++ b/src/manifest/types.rs
@@ -1,13 +1,16 @@
 use anyhow::Result;
 use indexmap::IndexMap;
 use serde::Deserialize;
-use std::path::{Path, PathBuf};
+use std::{
+	num::NonZero,
+	path::{Path, PathBuf},
+};
 
 use crate::tool::ToolConfig;
 
 use super::rule::FlatPickRule;
 
-#[derive(Debug, Deserialize)]
+#[derive(Debug, Deserialize, Clone)]
 #[serde(deny_unknown_fields)]
 pub struct Manifest {
 	pub config: PickConfig,
@@ -32,6 +35,9 @@ pub struct PickConfig {
 
 	#[serde(default = "default_false")]
 	pub process_links: bool,
+
+	#[serde(default)]
+	pub threads: Option<NonZero<usize>>,
 }
 
 impl PickConfig {
diff --git a/src/tool/bash.rs b/src/tool/bash.rs
index 438ce14..1473c80 100644
--- a/src/tool/bash.rs
+++ b/src/tool/bash.rs
@@ -8,7 +8,7 @@ use crate::manifest::types::PickConfig;
 
 use super::{PickTool, TaskContext};
 
-#[derive(Debug, Deserialize)]
+#[derive(Debug, Deserialize, Clone)]
 pub struct ToolBash {
 	#[serde(default)]
 	pub before: Option<String>,
diff --git a/src/tool/mod.rs b/src/tool/mod.rs
index 9db3b2c..acf0318 100644
--- a/src/tool/mod.rs
+++ b/src/tool/mod.rs
@@ -1,5 +1,5 @@
 use anyhow::Result;
-use serde::{Deserialize, de::DeserializeOwned};
+use serde::{de::DeserializeOwned, Deserialize};
 use std::{
 	fmt::Debug,
 	path::{Path, PathBuf},
@@ -41,7 +41,7 @@ pub struct TaskContext {
 	pub path_rel_str: String,
 }
 
-#[derive(Debug, Deserialize)]
+#[derive(Debug, Deserialize, Clone)]
 pub struct ToolConfig {
 	#[serde(default)]
 	pub bash: Option<ToolBash>,