diff --git a/Cargo.toml b/Cargo.toml
index b0ec7ca3..b8681007 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -11,6 +11,9 @@ authors = ["Richard Newman <rnewman@twinql.com>", "Nicholas Alexander <nalexande
 [dev-dependencies.datomish-cli]
   path = "cli"
 
+[dev-dependencies.datomish-explorer]
+  path = "explorer"
+
 [[bin]]
 name = "datomish-cli"
-path = "cli/src/main.rs"
\ No newline at end of file
+path = "cli/src/main.rs"
diff --git a/explorer/Cargo.toml b/explorer/Cargo.toml
new file mode 100644
index 00000000..bacbb27d
--- /dev/null
+++ b/explorer/Cargo.toml
@@ -0,0 +1,11 @@
+[package]
+name = "datomish-explorer"
+version = "0.0.1"
+
+[dependencies]
+iron = "0.4.x"
+toml = "0.2.1"
+clap = "2.19.3"
+
+[dependencies.datomish]
+  path = "../"
diff --git a/explorer/README.md b/explorer/README.md
new file mode 100644
index 00000000..67e8580f
--- /dev/null
+++ b/explorer/README.md
@@ -0,0 +1,3 @@
+# datomish-explorer
+
+An in-browser IDE for exploring a Datomish database.
diff --git a/explorer/src/cli.rs b/explorer/src/cli.rs
new file mode 100644
index 00000000..08dd76a3
--- /dev/null
+++ b/explorer/src/cli.rs
@@ -0,0 +1,45 @@
+// Copyright 2016 Mozilla
+//
+// Licensed under the Apache License, Version 2.0 (the "License"); you may not use
+// this file except in compliance with the License. You may obtain a copy of the
+// License at http://www.apache.org/licenses/LICENSE-2.0
+// Unless required by applicable law or agreed to in writing, software distributed
+// under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR
+// CONDITIONS OF ANY KIND, either express or implied. See the License for the
+// specific language governing permissions and limitations under the License.
+
+extern crate clap;
+
+use std::str::FromStr;
+
+pub struct Args {
+    pub database: String,
+    pub port: u16,
+}
+
+pub fn get_args() -> Args {
+    let matches = clap::App::new("Datomish Explorer")
+        .version("1.0")
+        .author("Mozilla")
+        .about("An in-browser IDE for exploring a Datomish database")
+        .arg(clap::Arg::with_name("database")
+             .short("d")
+             .long("database")
+             .value_name("FILE")
+             .help("Path to the Datomish database to explore")
+             .takes_value(true)
+             .required(true))
+        .arg(clap::Arg::with_name("port")
+             .short("p")
+             .long("port")
+             .value_name("INTEGER")
+             .help("Port to serve explorer from, i.e. `localhost:PORT`")
+             .default_value("3333")
+             .takes_value(true))
+        .get_matches();
+
+    Args {
+        port: u16::from_str(matches.value_of("port").unwrap()).unwrap(),
+        database: matches.value_of("database").unwrap().to_string(),
+    }
+}
diff --git a/explorer/src/main.rs b/explorer/src/main.rs
new file mode 100644
index 00000000..4626fef2
--- /dev/null
+++ b/explorer/src/main.rs
@@ -0,0 +1,27 @@
+// Copyright 2016 Mozilla
+//
+// Licensed under the Apache License, Version 2.0 (the "License"); you may not use
+// this file except in compliance with the License. You may obtain a copy of the
+// License at http://www.apache.org/licenses/LICENSE-2.0
+// Unless required by applicable law or agreed to in writing, software distributed
+// under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR
+// CONDITIONS OF ANY KIND, either express or implied. See the License for the
+// specific language governing permissions and limitations under the License.
+
+extern crate iron;
+
+mod cli;
+
+use cli::{get_args};
+use iron::prelude::*;
+use iron::status;
+
+fn main() {
+    let args = get_args();
+    fn hello_world(_: &mut Request) -> IronResult<Response> {
+        Ok(Response::with((status::Ok, "Hello World!")))
+    }
+
+    println!("Running Datomish Explorer at localhost:{} for database at {}", args.port, args.database);
+    let _server = Iron::new(hello_world).http(("localhost", args.port)).unwrap();
+}