diff --git a/README.md b/README.md
index e0ec513..ffb1086 100644
--- a/README.md
+++ b/README.md
@@ -4,7 +4,7 @@
 
 This is a [plugin](https://arc.codes/docs/en/guides/plugins/overview) for [Architect](https://arc.codes/) that provisions managed [Amazon OpenSearch](https://aws.amazon.com/opensearch-service/) for the application.
 
-When you are using Architect's [sandbox](https://arc.codes/docs/en/reference/cli/sandbox) mode, the plugin [downloads and runs OpenSearch locally](https://opensearch.org/downloads.html#opensearch).
+When you are using Architect's [sandbox](https://arc.codes/docs/en/reference/cli/sandbox) mode, the plugin [downloads and runs Elasticsearch](https://www.elastic.co/guide/en/elasticsearch/reference/current/install-elasticsearch.html#elasticsearch-install-packages) or [OpenSearch](https://opensearch.org/downloads.html#opensearch) locally.
 
 Pair this pacakge with [@nasa-gcn/architect-functions-search](https://github.com/nasa-gcn/architect-functions-search) to connect to the service from your Node.js Lambda function code.
 
@@ -30,6 +30,8 @@ Pair this pacakge with [@nasa-gcn/architect-functions-search](https://github.com
         # master nodes are disabled.
         dedicatedMasterCount 3
         dedicatedMasterType t3.small.search
+        # Use OpenSearch in sandbox mode; default is Elasticsearch.
+        sandboxEngine opensearch
 
 4.  Optionally, create a file called `sandbox-search.json` or `sandbox-search.js` in your project and populate it with sample data to be passed to [`client.bulk()`](https://github.com/opensearch-project/opensearch-js/blob/main/guides/bulk.md). Here are some examples.
 
diff --git a/engines.ts b/engines.ts
new file mode 100644
index 0000000..0ebd363
--- /dev/null
+++ b/engines.ts
@@ -0,0 +1,60 @@
+/*!
+ * Copyright © 2023 United States Government as represented by the
+ * Administrator of the National Aeronautics and Space Administration.
+ * All Rights Reserved.
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+export type SandboxEngine = 'elasticsearch' | 'opensearch'
+
+export const manifest = [
+  {
+    engine: 'elasticsearch',
+    type: 'Linux',
+    arch: 'x64',
+    url: 'https://artifacts.elastic.co/downloads/elasticsearch/elasticsearch-8.6.2-linux-x86_64.tar.gz',
+  },
+  {
+    engine: 'elasticsearch',
+    type: 'Linux',
+    arch: 'arm64',
+    url: 'https://artifacts.elastic.co/downloads/elasticsearch/elasticsearch-8.6.2-linux-aarch64.tar.gz',
+  },
+  {
+    engine: 'elasticsearch',
+    type: 'Darwin',
+    arch: 'x64',
+    url: 'https://artifacts.elastic.co/downloads/elasticsearch/elasticsearch-8.6.2-darwin-x86_64.tar.gz',
+  },
+  {
+    engine: 'elasticsearch',
+    type: 'Darwin',
+    arch: 'arm64',
+    url: 'https://artifacts.elastic.co/downloads/elasticsearch/elasticsearch-8.6.2-darwin-aarch64.tar.gz',
+  },
+  {
+    engine: 'elasticsearch',
+    type: 'Windows_NT',
+    arch: 'x64',
+    url: 'https://artifacts.elastic.co/downloads/elasticsearch/elasticsearch-8.6.2-windows-x86_64.zip',
+  },
+  {
+    engine: 'opensearch',
+    type: 'Linux',
+    arch: 'x64',
+    url: 'https://artifacts.opensearch.org/releases/bundle/opensearch/2.11.0/opensearch-2.11.0-linux-x64.tar.gz',
+  },
+  {
+    engine: 'opensearch',
+    type: 'Linux',
+    arch: 'arm64',
+    url: 'https://artifacts.opensearch.org/releases/bundle/opensearch/2.11.0/opensearch-2.11.0-linux-arm64.tar.gz',
+  },
+  {
+    engine: 'opensearch',
+    type: 'Windows_NT',
+    arch: 'x64',
+    url: 'https://artifacts.opensearch.org/releases/bundle/opensearch/2.11.0/opensearch-2.11.0-windows-x64.zip',
+  },
+]
diff --git a/index.ts b/index.ts
index 85b6e0e..1498de7 100644
--- a/index.ts
+++ b/index.ts
@@ -68,8 +68,15 @@ export const deploy = {
 
 let local: LocalSearch
 
+function getEngine(name?: string) {
+  if (name?.toLowerCase() === 'opensearch') return 'opensearch'
+  else return 'elasticsearch'
+}
+
 export const sandbox = {
   async start({
+    // @ts-expect-error: The Architect plugins API has no type definitions.
+    arc,
     inventory: {
       inv: {
         // @ts-expect-error: The Architect plugins API has no type definitions.
@@ -77,7 +84,8 @@ export const sandbox = {
       },
     },
   }) {
-    local = await launch({})
+    const engine = getEngine(getConfig(arc).sandboxEngine)
+    local = await launch({ engine })
     await populate(cwd, { node: local.url })
   },
   async end() {
diff --git a/install.ts b/install.ts
index 988f9f7..4c5f690 100644
--- a/install.ts
+++ b/install.ts
@@ -8,40 +8,12 @@
 
 import os from 'os'
 import { pipeline } from 'stream/promises'
-import { join } from 'path'
+import { join, posix } from 'path'
 import fetch from 'make-fetch-happen'
 import { Extract as unzip } from 'unzip-stream'
 import { x as untar } from 'tar'
 import { cache, exists, mkdirP } from './paths.js'
-
-const version = '2.11.0'
-
-const types = new Map([
-  ['Linux', ['linux', 'tar.gz']],
-  ['Windows_NT', ['windows', 'zip']],
-])
-
-const archs = ['x64', 'arm64']
-
-function getFilename() {
-  const os_type = os.type()
-  const os_arch = os.arch()
-
-  const typeInfo = types.get(os_type)
-
-  if (
-    !typeInfo ||
-    !archs.includes(os_arch) ||
-    (os_type === 'Windows_NT' && os_arch === 'arm64')
-  ) {
-    throw new Error(
-      `No OpenSearch binary is available for your OS type (${os_type}) and architecture (${os_arch}). For supported operating systems, see https://opensearch.org/versions/opensearch-2-11-0.html.`
-    )
-  }
-
-  const [type, ext] = typeInfo
-  return { name: `opensearch-${version}-${type}-${os_arch}`, ext }
-}
+import { SandboxEngine, manifest } from './engines.js'
 
 async function download(url: string) {
   console.log('Downloading', url, 'to', cache)
@@ -50,21 +22,34 @@ async function download(url: string) {
   return body
 }
 
-export async function install() {
-  const { name, ext } = getFilename()
-  const extractPath = join(cache, name)
-  const binExt = os.type() === 'Windows_NT' ? '.bat' : ''
+export async function install(engine: SandboxEngine) {
+  const type = os.type()
+  const arch = os.arch()
+  const url = manifest.find(
+    (entry) =>
+      entry.engine === engine && entry.arch === arch && entry.type === type
+  )?.url
+  if (!url) {
+    throw new Error(
+      `No ${engine} binary is available for your OS type (${type}) and architecture (${arch}).`
+    )
+  }
+
+  const archiveFilename = posix
+    .basename(new URL(url).pathname)
+    .replace(/(.tar.gz|.zip)$/, '')
+  const extractPath = join(cache, archiveFilename)
+  const binExt = type === 'Windows_NT' ? '.bat' : ''
   const binPath = join(
     extractPath,
-    `opensearch-${version}`,
+    archiveFilename.split('-').slice(0, 2).join('-'),
     'bin',
-    `opensearch${binExt}`
+    `${engine}${binExt}`
   )
 
   const binPathExists = await exists(binPath)
 
   if (!binPathExists) {
-    const url = `https://artifacts.opensearch.org/releases/bundle/opensearch/${version}/${name}.${ext}`
     const stream = await download(url)
 
     let extract
diff --git a/run.ts b/run.ts
index 075e233..9c4733b 100644
--- a/run.ts
+++ b/run.ts
@@ -20,6 +20,7 @@ import {
 } from './processes.js'
 import { pipeline } from 'stream/promises'
 import { createReadStream } from 'fs'
+import type { SandboxEngine } from './engines.js'
 
 export class LocalSearch {
   private readonly child!: ChildProcess
@@ -36,11 +37,17 @@ export class LocalSearch {
     return Object.assign(this, props)
   }
 
-  static async launch({ port }: { port?: number }) {
+  static async launch({
+    port,
+    engine,
+  }: {
+    port?: number
+    engine: SandboxEngine
+  }) {
     port ??= 9200
     const url = `http://localhost:${port}`
 
-    const bin = await install()
+    const bin = await install(engine)
     let child
 
     await mkdirP(temp)
@@ -55,7 +62,9 @@ export class LocalSearch {
         `-Epath.logs=${logsDir}`,
         `-Ehttp.port=${port}`,
         '-Ediscovery.type=single-node',
-        '-Eplugins.security.disabled=true',
+        engine === 'elasticsearch'
+          ? '-Expack.security.enabled=false'
+          : '-Eplugins.security.disabled=true',
       ]
 
       console.log('Spawning', bin, ...args)
@@ -75,7 +84,7 @@ export class LocalSearch {
         )
         throw e
       }
-      console.log('OpenSearch is ready at', url)
+      console.log(`${engine} is ready at`, url)
     } catch (e) {
       await rimraf(tempDir)
       throw e