diff --git a/src/commands/index.js b/src/commands/index.js
index fad516a6..1022021c 100644
--- a/src/commands/index.js
+++ b/src/commands/index.js
@@ -69,8 +69,11 @@ const all: Array<Command<any, any>> = [
   uninstallApp,
 ]
 
+export const commandsById = {}
+
 all.forEach(cmd => {
   invariant(!all.some(c => c !== cmd && c.id === cmd.id), `duplicate command '${cmd.id}'`)
+  commandsById[cmd.id] = cmd
 })
 
 export default all
diff --git a/src/renderer/init.js b/src/renderer/init.js
index 4f7278df..0cd10074 100644
--- a/src/renderer/init.js
+++ b/src/renderer/init.js
@@ -18,6 +18,7 @@ import { fetchAccounts } from 'actions/accounts'
 import { fetchSettings } from 'actions/settings'
 import { lock } from 'reducers/application'
 import { languageSelector, sentryLogsSelector } from 'reducers/settings'
+import { commandsById } from 'commands'
 import libcoreGetVersion from 'commands/libcoreGetVersion'
 
 import resolveUserDataDirectory from 'helpers/resolveUserDataDirectory'
@@ -111,6 +112,14 @@ async function init() {
     },
     false,
   )
+
+  // expose stuff in Windows for DEBUG purpose
+
+  window.ledger = {
+    commands: commandsById,
+    store,
+    db,
+  }
 }
 
 function r(Comp) {