diff --git a/nix-monitor/README.md b/nix-monitor/README.md
new file mode 100644
index 0000000..c251f59
--- /dev/null
+++ b/nix-monitor/README.md
@@ -0,0 +1,7 @@
+# Nix Monitor
+
+![thumbnail](thumbnail.webp)
+
+*Nix Monitor* checks Nixpkgs update by comparing local nix hash and remote nixpkgs's hash. It also can run update and clean command.
+
+No AI is used here but this is my first time writing Luau and plugin in general, so expect some bug. PRs are welcomed!
diff --git a/nix-monitor/nix_monitor.luau b/nix-monitor/nix_monitor.luau
new file mode 100644
index 0000000..b65d110
--- /dev/null
+++ b/nix-monitor/nix_monitor.luau
@@ -0,0 +1,55 @@
+
+function tr(key)
+    return noctalia.tr(key)
+end
+
+function barCfg(key)
+    return barWidget.getConfig(key)
+end
+
+function getState(key)
+    return noctalia.state.get(key)
+end
+
+function displayWidget(glyph: string, text: string, color: string?)
+    if color == nil then
+        color = "on_surface"
+    end
+
+    if barCfg("colorize_text") then
+        barWidget.setColor(color)
+    end
+
+    if barCfg("colorize_glyph") then
+        barWidget.setGlyphColor(color)
+    end
+
+    if barCfg("show_glyph") then
+        barWidget.setGlyph(glyph)
+    end
+
+    if barCfg("show_text") then
+        barWidget.setText(text)
+    end
+end
+
+function update()
+    if getState("isRunning") then
+        displayWidget(barCfg("checking_glyph"), tr("bar.checking"), barCfg("checking_color"))
+    else
+        if getState("isUpdateAvailable") then
+            displayWidget(barCfg("update_available_glyph"), tr("bar.update_available"), barCfg("update_available_color"))
+        else
+            if getState("localHash") == "n/a" or getState("remoteHash") == "n/a" then
+                displayWidget(barCfg("unknown_glyph"), tr("bar.unknown"), barCfg("unknown_color"))
+            else
+                displayWidget(barCfg("up_to_date_glyph"), tr("bar.up_to_date"), barCfg("up_to_date_color"))
+            end
+        end
+    end
+
+end
+
+function onClick()
+    noctalia.togglePanel("avivbintangaringga/nix-monitor:panel")
+end
diff --git a/nix-monitor/nix_monitor_service.luau b/nix-monitor/nix_monitor_service.luau
new file mode 100644
index 0000000..a12fc66
--- /dev/null
+++ b/nix-monitor/nix_monitor_service.luau
@@ -0,0 +1,111 @@
+noctalia.setUpdateInterval(100)
+
+function tr(key)
+    return noctalia.tr(key)
+end
+
+function cfg(key)
+    return noctalia.getConfig(key)
+end
+
+function getState(key)
+    return noctalia.state.get(key)
+end
+
+function setState(key, val)
+    noctalia.state.set(key, val)
+end
+
+function watchState(key, cb)
+    noctalia.state.watch(key, cb)
+end
+
+local branch = cfg("branch")
+local updateCheckInterval = cfg("check_interval")
+local localHashCmd  = "nixos-version --hash 2> /dev/null | cut -c -7"
+local remoteHashCmd = "git ls-remote https://github.com/NixOS/nixpkgs " .. branch .. " 2>/dev/null | cut -c 1-7"
+local completedCommands = 0
+
+setState("lastCheckTime", 0)
+setState("lastCheckTimeStr", "n/a")
+setState("localHash", "n/a")
+setState("remoteHash", "n/a")
+setState("isRunning", false)
+setState("isUpdateAvailable", false)
+
+function update()
+    if (os.time() - getState("lastCheckTime")) >= 60 * updateCheckInterval then
+        checkUpdate()
+    end
+end
+
+function checkUpdate()
+    if getState("isRunning") then
+        return
+    end
+
+    setState("lastCheckTime", os.time())
+    noctalia.runAsync("date", function(date) setState("lastCheckTimeStr", date.stdout) end)
+
+    if cfg("show_checking_notification") then
+        noctalia.notify(tr("notification.checking_update"))
+    end
+
+    setState("isRunning", true)
+
+    completedCommands = 0
+
+    noctalia.runAsync(localHashCmd, getLocalHash)
+    noctalia.runStream(remoteHashCmd, getRemoteHash)
+end
+
+function getLocalHash(result)
+    if getState("isRunning") ~= true then
+        return
+    end
+
+    setState("localHash", result.stdout)
+    completedCommands += 1
+    onHashCheckCompleted()
+end
+
+function getRemoteHash(line)
+    if getState("isRunning") ~= true then
+        return
+    end
+
+    setState("remoteHash", line)
+    completedCommands += 1
+    onHashCheckCompleted()
+end
+
+function onHashCheckCompleted()
+    if completedCommands < 2 then
+        return
+    end
+
+    if getState("localHash") ~= getState("remoteHash") then
+        setState("isUpdateAvailable", true)
+        if cfg("show_update_notification") then
+            noctalia.notify(tr("notification.update_is_available"))
+        end
+    end
+
+    if cfg("show_checking_notification") then
+        noctalia.notify(tr("notification.update_check_completed"))
+    end
+
+    setState("isRunning", false)
+end
+
+watchState("command", function(command)
+    if command == "check" then
+        checkUpdate()
+    end
+
+    if command == "cancel" then
+        noctalia.runAsync(`kill $(ps -ef | grep "git ls-remote https://github.com/NixOS/nixpkgs" | grep -v grep | awk '\{print $2\}')`)
+        setState("isRunning", false)
+        completedCommands = 0
+    end
+end)
diff --git a/nix-monitor/panel.luau b/nix-monitor/panel.luau
new file mode 100644
index 0000000..2704d31
--- /dev/null
+++ b/nix-monitor/panel.luau
@@ -0,0 +1,186 @@
+function tr(key)
+    return noctalia.tr(key)
+end
+
+function barCfg(key)
+    return barWidget.getConfig(key)
+end
+
+function cfg(key)
+    return noctalia.getConfig(key)
+end
+
+function getState(key)
+    return noctalia.state.get(key)
+end
+
+function setState(key, val)
+    noctalia.state.set(key, val)
+end
+
+function watchState(key, cb)
+    noctalia.state.watch(key, cb)
+end
+
+local function labelBox(subtext, text, glyph)
+    return ui.column({
+        fill = "surface/0.7",
+        flexGrow = 1,
+        height = 100,
+        radius = 8,
+        align = "center",
+        padding = 12,
+        justify = "space_between"
+    }, {
+        ui.glyph({
+            name = glyph,
+            size = 30
+        }),
+        ui.label({
+            text = text,
+            fontWeight = "bold"
+        }),
+        ui.label({
+            text = subtext,
+            fontSize = 12,
+            fontWeight = "medium"
+        }),
+    })
+end
+
+local function render()
+    local firstBtn = btnCheck
+
+    if getState("isRunning") then
+        firstBtn = ui.button({
+            text = tr("panel.cancel"),
+            glyph = "cancel",
+            flexGrow = 1,
+            variant = "destructive",
+            onClick = "onCancelClicked",
+        })
+    else
+        if getState("isUpdateAvailable") then
+            firstBtn = ui.button({
+                text = tr("panel.update"),
+                glyph = "progress-down",
+                flexGrow = 1,
+                variant = "primary",
+                onClick = "onUpdateClicked",
+            })
+        else
+            firstBtn = ui.button({
+                text = tr("panel.check"),
+                glyph = "search",
+                flexGrow = 1,
+                variant = "outline",
+                onClick = "onCheckClicked",
+            })
+        end
+    end
+
+    local lastCheckTimeStr = getState("lastCheckTimeStr")
+
+    panel.render(
+        ui.column({
+            gap = 8
+        }, {
+            ui.row({
+                justify = "space_between",
+                align = "center"
+            }, {
+                ui.label({
+                    text = tr("panel.title"),
+                    fontSize = 20,
+                }),
+
+                ui.label({
+                    text = cfg("branch"),
+                    fontSize = 14,
+                }),
+            }),
+            ui.separator({
+                thickness = 2,
+                orientation = "horizontal",
+                spacing = 4
+            }),
+            ui.row({
+                gap = 8,
+                align = "center",
+                justify = "space_between"
+            }, {
+                labelBox(tr("panel.local"), getState("localHash"), "devices-pc"),
+                labelBox(tr("panel.remote"), getState("remoteHash"), "world"),
+            }),
+            ui.separator({
+                thickness = 2,
+                orientation = "horizontal",
+                spacing = 4
+            }),
+            ui.label({
+                text = `{tr("panel.last_checked")}: {lastCheckTimeStr}`
+            }),
+            ui.row({
+                gap = 8,
+                align = "center",
+                justify = "space_between"
+            }, {
+                firstBtn,
+                ui.button({
+                    text = tr("panel.clean"),
+                    glyph = "trash",
+                    flexGrow = 1,
+                    variant = "destructive",
+                    onClick = "onCleanClicked",
+                }),
+            })
+        })
+    )
+end
+
+watchState("isRunning", render)
+watchState("lastCheckTimeStr", render)
+watchState("localHash", render)
+watchState("remoteHash", render)
+
+function onOpen(_ctx)
+    render()
+end
+
+function onCheckClicked()
+    setState("command", "check")
+end
+
+function onCancelClicked()
+    setState("command", "cancel")
+end
+
+function onUpdateClicked()
+    command = cfg("update_command")
+    if command == "" then
+        noctalia.notifyError(tr("notification.update_command_is_empty"))
+        return
+    end
+
+    if cfg("close_on_enter") then
+        command = `{command} && echo && read -p "{tr("terminal.press_enter_to_exit")}"`
+    end
+
+    panel.close()
+    noctalia.runInTerminal(command)
+end
+
+function onCleanClicked()
+    command = cfg("clean_command")
+    if command == "" then
+        noctalia.notifyError(tr("notification.clean_command_is_empty"))
+        return
+    end
+
+    if cfg("close_on_enter") then
+        command = `{command} && echo && read -p "{tr("terminal.press_enter_to_exit")}"`
+    end
+
+    panel.close()
+    noctalia.runInTerminal(command)
+end
diff --git a/nix-monitor/plugin.toml b/nix-monitor/plugin.toml
new file mode 100644
index 0000000..4e34514
--- /dev/null
+++ b/nix-monitor/plugin.toml
@@ -0,0 +1,164 @@
+id              = "avivbintangaringga/nix-monitor"
+name            = "Nix Monitor"
+version         = "1.0.0"
+min_noctalia    = "5.0.0"
+author          = "avivbintangaringga"
+description     = "Nixpkgs update monitor"
+tags            = [ "nix", "utility" ]
+dependencies    = [ "nixos-version", "git", "pkill" ]
+
+[[widget]]
+id      = "Nix Monitor"
+entry   = "nix_monitor.luau"
+
+[[widget.setting]]
+key         = "show_text"
+type        = "boolean"
+label_key   = "setting.widget.show_text.label"
+default     = true
+
+[[widget.setting]]
+key         = "colorize_text"
+type        = "boolean"
+label_key   = "setting.widget.colorize_text.label"
+default     = false
+
+[[widget.setting]]
+key         = "show_glyph"
+type        = "boolean"
+label_key   = "setting.widget.show_glyph.label"
+default     = true
+
+[[widget.setting]]
+key         = "colorize_glyph"
+type        = "boolean"
+label_key   = "setting.widget.colorize_glyph.label"
+default     = true
+
+[[widget.setting]]
+key         = "up_to_date_glyph"
+type        = "glyph"
+label_key   = "setting.widget.up_to_date_glyph.label"
+default     = "rosette-discount-check"
+
+[[widget.setting]]
+key         = "up_to_date_color"
+type        = "color"
+label_key   = "setting.widget.up_to_date_color.label"
+default     = "#57ff57"
+
+[[widget.setting]]
+key         = "checking_glyph"
+type        = "glyph"
+label_key   = "setting.widget.checking_glyph.label"
+default     = "loader-3"
+
+[[widget.setting]]
+key         = "checking_color"
+type        = "color"
+label_key   = "setting.widget.checking_color.label"
+default     = "#ffeb57"
+
+[[widget.setting]]
+key         = "update_available_glyph"
+type        = "glyph"
+label_key   = "setting.widget.update_available_glyph.label"
+default     = "cloud-download"
+
+[[widget.setting]]
+key         = "update_available_color"
+type        = "color"
+label_key   = "setting.widget.update_available_color.label"
+default     = "#ff5757"
+
+[[widget.setting]]
+key         = "unknown_glyph"
+type        = "glyph"
+label_key   = "setting.widget.unknown_glyph.label"
+default     = "cloud-question"
+
+[[widget.setting]]
+key         = "unknown_color"
+type        = "color"
+label_key   = "setting.widget.unknown_color.label"
+default     = "on_surface"
+
+[[setting]]
+key             = "check_interval"
+type            = "int"
+label_key       = "setting.check_interval.label"
+description_key = "setting.check_interval.description"
+default         = 60
+min             = 10
+
+[[setting]]
+key             = "show_checking_notification"
+type            = "boolean"
+label_key       = "setting.checking_notification.label"
+description_key = "setting.checking_notification.description"
+default         = false
+
+[[setting]]
+key             = "show_update_notification"
+type            = "boolean"
+label_key       = "setting.show_update_notification.label"
+description_key = "setting.show_update_notification.description"
+default         = true
+
+[[setting]]
+key             = "branch"
+type            = "select"
+label_key       = "setting.branch.label"
+description_key = "setting.branch.description"
+options         = [
+    { value = "master", label = "Master" },
+    { value = "nixos-unstable", label = "NixOS Unstable" },
+    { value = "nixos-unstable-small", label = "NixOS Unstable Small" },
+    { value = "nixos-25.11", label = "NixOS 25.11" },
+    { value = "nixos-25.05", label = "NixOS 25.05" },
+    { value = "nixos-24.11", label = "NixOS 24.11" },
+    { value = "nixos-24.05", label = "NixOS 24.05" },
+    { value = "nixos-23.11", label = "NixOS 23.11" },
+    { value = "nixos-23.05", label = "NixOS 23.05" },
+    { value = "nixos-25.11-small", label = "NixOS 25.11 Small" },
+    { value = "nixos-25.05-small", label = "NixOS 25.05 Small" },
+    { value = "nixos-24.11-small", label = "NixOS 24.11 Small" },
+    { value = "nixos-24.05-small", label = "NixOS 24.05 Small" },
+    { value = "nixos-23.11-small", label = "NixOS 23.11 Small" },
+    { value = "nixos-23.05-small", label = "NixOS 23.05 Small" },
+]
+default         = "nixos-unstable"
+
+[[setting]]
+key             = "update_command"
+type            = "string"
+label_key       = "setting.update_command.label"
+description_key = "setting.update_command.description"
+default         = ""
+
+[[setting]]
+key             = "clean_command"
+type            = "string"
+label_key       = "setting.clean_command.label"
+description_key = "setting.clean_command.description"
+default         = "nh clean all"
+
+[[setting]]
+key             = "close_on_enter"
+type            = "boolean"
+label_key       = "setting.close_on_enter.label"
+description_key = "setting.close_on_enter.description"
+default         = true
+
+[[panel]]
+id              = "panel"
+entry           = "panel.luau"
+placement       = "attached"
+position        = "auto"
+open_near_click = true
+width           = 420
+height          = 290
+
+[[service]]
+id      = "service"
+entry   = "nix_monitor_service.luau"
diff --git a/nix-monitor/thumbnail.webp b/nix-monitor/thumbnail.webp
new file mode 100644
index 0000000..a3137bd
Binary files /dev/null and b/nix-monitor/thumbnail.webp differ
diff --git a/nix-monitor/translations/en.json b/nix-monitor/translations/en.json
new file mode 100644
index 0000000..4f91e91
--- /dev/null
+++ b/nix-monitor/translations/en.json
@@ -0,0 +1,46 @@
+{
+  "bar.checking": "Checking...",
+  "bar.update_available": "Update available!",
+  "bar.up_to_date": "Up to date",
+  "bar.unknown": "Unknown",
+  "notification.checking_update": "Checking update...",
+  "notification.update_is_available": "Update is available!",
+  "notification.update_check_completed": "Update check completed!",
+  "notification.update_command_is_empty": "Update command is empty!",
+  "notification.clean_command_is_empty": "Clean command is empty!",
+  "panel.title": "Nix Monitor",
+  "panel.cancel": "Cancel",
+  "panel.update": "Update",
+  "panel.check": "Check",
+  "panel.clean": "Clean",
+  "panel.local": "Local",
+  "panel.remote": "Remote",
+  "panel.last_checked": "Last checked",
+  "terminal.press_enter_to_exit": "Press enter to exit...",
+  "setting.widget.show_text.label": "Show text",
+  "setting.widget.colorize_text.label": "Colorize text",
+  "setting.widget.show_glyph.label": "Show glyph",
+  "setting.widget.colorize_glyph.label": "Colorize glyph",
+  "setting.widget.up_to_date_glyph.label": "Up to date glyph",
+  "setting.widget.up_to_date_color.label": "Up to date color",
+  "setting.widget.checking_glyph.label": "Checking glyph",
+  "setting.widget.checking_color.label": "Checking color",
+  "setting.widget.update_available_glyph.label": "Update available glyph",
+  "setting.widget.update_available_color.label": "Update available color",
+  "setting.widget.unknown_glyph.label": "Unknown status glyph",
+  "setting.widget.unknown_color.label": "Unknown status color",
+  "setting.check_interval.label": "Update check interval",
+  "setting.check_interval.description": "How often to check for updates (in minutes)",
+  "setting.checking_notification.label": "Show checking update notification",
+  "setting.checking_notification.description": "Wether to show a notification whenever checking is in progress",
+  "setting.show_update_notification.label": "Show update notification",
+  "setting.show_update_notification.description": "Wether to show a notification whenever update is available",
+  "setting.branch.label": "Branch",
+  "setting.branch.description": "Which nixpkgs branch to use",
+  "setting.update_command.label": "Update command",
+  "setting.update_command.description": "Command to run when clicking Update button",
+  "setting.clean_command.label": "Clean command",
+  "setting.clean_command.description": "Command to run when clicking Clean button",
+  "setting.close_on_enter.label": "Close on press Enter",
+  "setting.close_on_enter.description": "Add 'Press enter to exit' on the terminal window"
+}