# App Store - one-click open-source apps on blitz.cloud

> The blitz.cloud App Store has 119 open-source apps. What they need in memory, space and databases, and how installing works.

Web page: https://blitz.cloud/docs/app-store/
Updated: 2026-10-24

The blitz.cloud App Store has 119 open-source apps, and all of them run here. Pick one, give it a name, and it installs with the settings, storage and database it needs. Before you install, the store says how much memory and space the app takes, whether it uses your free database or brings a small cache, and whether it fits your plan.

Every app has [a page of its own](https://blitz.cloud/apps/) that says what it replaces and what it needs. We run every entry under the same rules a real install gets before we list it: in its own sandbox, inside the memory limit. Where an app can't do something here, its card says so.

## The apps

The store sorts them into ten categories, named after what people want to do: Files & documents, Photos & media, Websites & blogs, Passwords & security, Money & home, Monitoring & automation, Notes & knowledge, Productivity, Developer tools and AI & chat.

| App | What it is for | Memory | Storage it reserves | Database | Runs on blitz.cloud today |
|---|---|---|---|---|---|
| FileBrowser Quantum | Upload, download and sort the files your apps keep, from your browser | 128 MB | 1 GB | none | Yes |
| Nextcloud | Your own Dropbox: files, calendar and contacts in one place | 128 MB | 5 GB | MariaDB | Yes |
| Syncthing | Keep a folder in step across your computers and phone, with no cloud in between | 128 MB | 5 GB | none | Yes |
| Paperless-ngx | Scan your paper mail once and find any letter in seconds | 256 MB | 5 GB | PostgreSQL and a cache | Yes |
| OpenCloud | Your own Dropbox for files and folders, with desktop and phone apps that sync | 256 MB | 5 GB | none | Yes |
| Stirling PDF | Merge, split, sign and shrink PDFs without uploading them to a stranger | 256 MB | 1 GB | none | Yes |
| Immich | Back up every photo from your phone automatically, like Google Photos | 768 MB | 5 GB | PostgreSQL and a cache | Yes, on Pro |
| Jellyfin | Your movies and music, streamed to any screen in the house | 128 MB | 5 GB | none | Yes |
| Audiobookshelf | Audiobooks and podcasts on every phone, and it remembers where you stopped | 128 MB | 5 GB | none | Yes |
| Ghost | A blog and newsletter, ready to write in | 128 MB | 2 GB | none | Yes |
| Umami | See how many people visit your website, without cookies or banners | 128 MB | none | PostgreSQL | Yes |
| Vaultwarden | A password manager the whole family can use, works with the Bitwarden apps | 128 MB | 1 GB | none | Yes |
| Actual Budget | A budget app that shows where your money goes | 128 MB | 1 GB | none | Yes |
| Mealie | Save recipes, plan the week's meals and build the shopping list | 128 MB | 1 GB | none | Yes |
| Firefly III | Every account, bill and budget in one place, with reports | 128 MB | 1 GB | PostgreSQL | Yes |
| Home Assistant | Control lights, heating and more, all local | 256 MB | 1 GB | none | Yes |
| n8n | Connect your apps and automate chores without code | 256 MB | 1 GB | none | Yes |
| Uptime Kuma | Get a ping when any of your sites goes down | 128 MB | 1 GB | none | Yes |
| Linkding | A fast, private place for every link you meant to read later | 128 MB | 1 GB | none | Yes |
| Memos | A quick place to write things down | 128 MB | 1 GB | none | Yes |
| Joplin Server | Keeps your Joplin notes in sync across phone and computers | 128 MB | none | PostgreSQL | Yes |
| Linkwarden | Save links with a full copy of each page, so they still open after the site is gone | 256 MB | 2 GB | PostgreSQL | Yes |
| Wiki.js | A wiki for your team or club, with an editor and search | 128 MB | none | PostgreSQL | Yes |
| Docmost | Shared pages and a wiki for your team, with an editor that feels like Notion | 256 MB | 2 GB | PostgreSQL and a cache | Yes |
| SilverBullet | A notebook in your browser where pages link to each other, kept as plain text files | 128 MB | 1 GB | none | Yes |
| FreshRSS | All your news feeds in one calm, ad-free reader | 128 MB | 1 GB | none | Yes |
| Vikunja | To-do lists and projects as lists, boards or a calendar | 128 MB | 1 GB | none | Yes |
| HedgeDoc | Write notes together in real time, in the browser | 128 MB | 1 GB | none | Yes |
| Planka | Boards and cards for planning anything together, like Trello | 128 MB | 1 GB | PostgreSQL | Yes |
| Forgejo | Your own place for Git repositories, issues and pull requests, like a small GitHub | 128 MB | 2 GB | none | Yes |
| Wakapi | See how much time you spend coding, per project and language | 128 MB | 1 GB | none | Yes |
| WordPress | Build a website or a blog, with thousands of free themes and plugins | 128 MB | 2 GB | MariaDB | Yes |
| WAHA | A WhatsApp API you run yourself: connect a number, then send and receive messages over HTTP | 256 MB | 1 GB | none | Yes |
| Evolution API | Send and receive WhatsApp messages from your own code | 128 MB | 1 GB | PostgreSQL and a cache | Yes |
| Activepieces | Connect your apps and automate chores by clicking steps together | 256 MB | none | PostgreSQL and a cache | Yes |
| NocoBase | Build your own internal tools and databases by clicking | 256 MB | 1 GB | PostgreSQL | Yes |
| Open WebUI | A chat page like ChatGPT for the AI models you choose | 256 MB | 2 GB | none | Yes |
| OmniRoute | One address for all your AI providers, which switches to another one when a provider fails | 256 MB | 1 GB | none | Yes |
| 9router | Send your AI coding tools through one address and switch providers when one fails | 128 MB | 1 GB | none | Yes |
| LibreTranslate | Translate text on your own server, without sending it to Google or DeepL | 256 MB | 1 GB | none | Yes |
| OpenClaw | A personal AI assistant you talk to from a web page or your chat apps | 256 MB | 1 GB | none | Yes |
| Hermes Agent | An AI agent your own apps talk to through an OpenAI-style API | 256 MB | 1 GB | none | Yes, as an API |
| SillyTavern | Chat and write stories with AI characters, through the AI provider you choose | 128 MB | 1 GB | none | Yes |
| Miniflux | All your news feeds in one fast, no-frills reader | 128 MB | none | PostgreSQL | Yes |
| ntfy | Send push notifications to your phone or desktop from a script or any app | 128 MB | 1 GB | none | Yes |
| Gotify | A simple server for push notifications from your own scripts and services | 128 MB | 1 GB | none | Yes |
| Excalidraw | A virtual whiteboard for sketches and diagrams that look hand-drawn | 128 MB | none | none | Yes |
| PrivateBin | Paste text or code that only the person with the link can read | 128 MB | 1 GB | none | Yes |
| Navidrome | Stream your own music library from any device, like your own Spotify | 128 MB | 2 GB | none | Yes |
| Wallabag | Save articles from the web and read them later, without ads or trackers | 128 MB | 1 GB | none | Yes |
| Etherpad | Write a document together with other people, watching edits appear live | 128 MB | 1 GB | none | Yes |
| code-server | VS Code running in your browser, so you can code from any device | 256 MB | 5 GB | none | Yes |
| Gitea | Your own place for Git repositories, issues and pull requests, like a small GitHub | 256 MB | 2 GB | none | Yes |
| Dashy | A start page for all the apps and sites you use, with status checks and widgets | 128 MB | 1 GB | none | Yes |
| BookStack | A wiki organized like a library, with books, chapters and pages | 128 MB | 2 GB | MariaDB | Yes |
| DokuWiki | A wiki that keeps every page as a plain text file, no database needed | 128 MB | 1 GB | none | Yes |
| Calibre-Web | Browse and read your ebook collection in the browser | 128 MB | 5 GB | none | Yes |
| Kavita | Read your comics, manga and ebooks from one library | 256 MB | 5 GB | none | Yes |
| Komga | A server for your comics and manga, with its own reader | 256 MB | 5 GB | none | Yes |
| Shiori | Save web pages with one click and keep a readable copy | 128 MB | 1 GB | none | Yes |
| flatnotes | Write quick notes as plain markdown files | 128 MB | 1 GB | none | Yes |
| Homer | A start page with a tile for every app and site you use | 128 MB | 1 GB | none | Yes |
| Fider | Collect feedback and feature requests from your users | 128 MB | none | PostgreSQL | Yes |
| Beszel | Watch CPU, memory, disk and network for your own servers | 128 MB | 1 GB | none | Yes |
| Readeck | Save articles from the web and read them later, without ads | 128 MB | 1 GB | none | Yes |
| Changedetection.io | Get a message when a website you watch changes | 128 MB | 1 GB | none | Yes |
| Listmonk | Send newsletters and announcements to your own mailing lists | 128 MB | none | PostgreSQL | Yes |
| Shlink | Shorten links and keep the click numbers on a server that's only yours | 256 MB | 1 GB | none | Yes |
| The Lounge | Stay connected to IRC from any device | 128 MB | 1 GB | none | Yes |
| Traggo | Track your time with tags instead of projects | 128 MB | 1 GB | none | Yes |
| TriliumNext | Keep notes in a tree you shape yourself | 128 MB | 2 GB | none | Yes |
| Tududi | Organise tasks, projects and notes in one place | 128 MB | 1 GB | none | Yes |
| HomeBox | Keep an inventory of everything you own, and what it's worth | 128 MB | 1 GB | none | Yes |
| MicroBin | Share a snippet, a file or a link with a short address | 128 MB | 1 GB | none | Yes |
| Gokapi | Share a file with a link that expires when you decide it should | 128 MB | 1 GB | none | Yes |
| Gonic | Stream your own music and podcasts to any Subsonic app | 128 MB | 5 GB | none | Yes |
| Fusion | Follow RSS feeds from one clean inbox | 128 MB | 1 GB | none | Yes |
| ByteStash | Save and search the code snippets you keep reusing | 128 MB | 1 GB | none | Yes |
| CommaFeed | Read your RSS feeds in a fast, familiar reader | 256 MB | none | PostgreSQL | Yes |
| Homarr | A home screen for every app and server you run | 256 MB | 1 GB | none | Yes |
| Rallly | Find a date that works for everyone, without the back and forth | 256 MB | none | PostgreSQL | Yes |
| PdfDing | Keep your PDFs, read them and pick up where you left off | 128 MB | 2 GB | none | Yes |
| Poznote | Write and organise notes with tags, folders and search | 128 MB | 2 GB | none | Yes |
| Ocular | Plan your budget with charts that make it clear where your money goes | 128 MB | 1 GB | none | Yes |
| Paisa | Track your money in a plain text ledger, with charts to make sense of it | 128 MB | 1 GB | none | Yes |
| Grocy | Track groceries, chores and household items, with reminders before anything runs out | 128 MB | 1 GB | none | Yes |
| Snipe-IT | Track who has which laptop, licence or asset, with a tag and history for every item | 256 MB | 2 GB | MariaDB | Yes |
| Monica | Keep notes on the people in your life, birthdays, calls and conversations included | 256 MB | 1 GB | MariaDB | Yes |
| Easy!Appointments | Let people book a slot on your calendar, with reminders and no back and forth by mail | 128 MB | 1 GB | MariaDB | Yes |
| Chevereto | Run your own image and video host, with albums, galleries and links to share | 128 MB | 5 GB | MariaDB | Yes |
| Lychee | A photo gallery you host yourself, with albums, maps and a slideshow for every trip | 256 MB | 5 GB | MariaDB | Yes |
| Matomo | See who visits your site and what they do, on your own server instead of someone else's | 256 MB | 2 GB | MariaDB | Yes |
| MediaWiki | Run your own wiki, the same software behind Wikipedia, with pages, history and search | 128 MB | 1 GB | none | Yes |
| Roundcube | A web mail client for an inbox you already have, with search, folders and a contact list | 128 MB | 512 MB | none | Yes |
| RSS-Bridge | Turn a website with no feed of its own into an RSS or Atom feed your reader can follow | 128 MB | none | none | Yes |
| Answer | Run your own question-and-answer board for your team or community | 128 MB | 1 GB | none | Yes |
| Airsonic Advanced | Stream your own music library from your phone or browser | 256 MB | 5 GB | none | Yes |
| Convos | Chat over IRC from your phone or browser, always on | 128 MB | 1 GB | none | Yes |
| LubeLogger | Track every service, repair and cost for your car in one place | 128 MB | 2 GB | none | Yes |
| SerpBear | Track where your site ranks on Google for the keywords you choose | 128 MB | 1 GB | none | Yes |
| Pinry | Collect and tag images from anywhere on the web in your own pinboard | 128 MB | 2 GB | none | Yes |
| NoteDiscovery | Browse and search a folder of markdown notes from a clean web page | 128 MB | 1 GB | none | Yes |
| Open DroneLog | Keep a private logbook of your drone flights | 128 MB | 1 GB | none | Yes |
| Blinko | Capture quick notes and links and let it tag them for you | 256 MB | 2 GB | PostgreSQL | Yes |
| RSSHub | Turn thousands of sites and apps that have no feed into RSS, with a huge library of ready-made routes | 256 MB | none | none | Yes |
| PasswordPusher | Share a password, API key or note once as a link that expires after it is viewed or after a set time | 256 MB | 1 GB | none | Yes |
| Mautic | Run your own marketing automation, with email campaigns, landing pages and contact segments | 256 MB | 2 GB | MariaDB | Yes |
| GlitchTip | Catch your app's errors and performance issues with your own error tracker, compatible with the Sentry SDKs | 256 MB | none | PostgreSQL | Yes |
| FreeScout | Run your own shared help desk inbox, with tickets, saved replies and a team view of every conversation | 128 MB | 1 GB | MariaDB | Yes |
| PhotoPrism | Browse, search and organise your own photo library with AI tagging, all stored on your own server | 768 MB | 10 GB | MariaDB | Yes, on Pro |
| Haven | Write a private blog for friends and family, with accounts you create yourself and a built-in RSS reader | 128 MB | 2 GB | PostgreSQL | Yes |
| Tymeslot | Share a booking page so people can find a free slot on your calendar, with its own calendar sync | 256 MB | 2 GB | none | Yes |
| ArchiveBox | Save a copy of any page you link to, so it is still there even if the original disappears | 768 MB | 5 GB | none | Yes, on Pro |
| Keycloak | Run your own sign-in system for your apps and websites, with single sign-on | 768 MB | none | PostgreSQL | Yes, on Pro |
| Mattermost | Chat with your team in channels and direct messages, on your own server | 768 MB | 5 GB | PostgreSQL | Yes, on Pro |
| Metabase | Turn your data into charts and dashboards anyone on your team can read, no SQL needed | 768 MB | 2 GB | PostgreSQL | Yes, on Pro |
| Grimmory | Organise your ebooks and comics in one library, with covers and reading progress | 768 MB | 10 GB | MariaDB | Yes, on Pro |
| Sure | Track every account, budget and investment in one place, on your own server | 768 MB | 5 GB | PostgreSQL and a cache | Yes, on Pro |

Memory is what the app reserves from your plan. A database or cache adds its own, see [storage and memory](#storage-and-memory) below.

## Apps that run as root

Home Assistant, FreshRSS, Stirling PDF, NocoBase, Excalidraw, Wallabag, Etherpad, BookStack, DokuWiki, Calibre-Web, Homarr, Poznote, Ocular, Grocy, Snipe-IT, Monica, Lychee, MediaWiki, RSS-Bridge, Answer, Airsonic Advanced, LubeLogger, Pinry, NoteDiscovery, Open DroneLog, Blinko, Mautic, FreeScout, PhotoPrism, Haven, Tymeslot, ArchiveBox and Grimmory have to start as root: they set up their own system files before they begin. Until 26 September 2026 that stopped them here. Now they run as root inside their own sandbox, which keeps them apart from the server and from other people's apps, like any image you deploy yourself that needs root.

Immich needed more memory than an app got here. It now uses a larger size that comes with Pro: 768 MB reserved and up to 2 GB, enough for its first start, when it loads its map data. Face and object search stay off for now.

## How installing works

1. In the [dashboard](https://dashboard.blitz.cloud/), open the App Store or click "Host something new" and choose "A ready-made app".
2. Search by what you want ("photos", "blog", "passwords") or by what you'd like to replace ("Dropbox", "Google Photos"), or browse the categories. Each app also has a page of its own in the store.
3. Pick a name for the app. It becomes the subdomain, like `vault.<you>.blitz.cloud`.
4. Click "Put it online". The last step lists everything that gets created first, each database and cache included, and how much of your plan it uses.

The store entry brings the rest: the version, the port, the folders to keep, the settings the app reads, and a health check that knows what "working" looks like for that app. If the app needs a database, one is created and connected, and the settings it will fill in are listed before anything is applied.

Store apps are restarted automatically if they stop answering their health check. After install, the Environment tab shows every setting and lets you change it. Most store apps follow a version line, like Nextcloud 34, and get new versions within it overnight. If a new version doesn't start, the one before it keeps running.

## First steps after installing

The app page lists what to do next for that app: where to sign in, and which setting to change once everyone has an account. Passwords and admin tokens that were made for you, like Vaultwarden's admin token, sit behind Show and Copy on that page, never in the text.

Do the first step soon. Many apps make the first person who opens them the admin, so until you have signed up, anyone who finds the address could. Mealie, Joplin Server and Umami start with a password everyone who knows the app knows, and their first steps tell you to change it right away.

## Needs Pro

The store works out whether an app fits the free plan before you install it. If it doesn't, the card says "Needs Pro" and why, and the install is refused on the free plan. Every app except Immich fits an empty free account. Whether it fits yours depends on what you already run: the free plan has one database, so a second app that needs a database asks you to make room or move to Pro. The card names the limit it would hit. Immich needs Pro for its memory.

## Apps that only work while they're awake

On the free plan an app sleeps after 15 minutes without visitors. For most apps that doesn't matter, because the next visit wakes it. A few do their job with nobody visiting, and the store card says what stops while they sleep:

- n8n only runs its schedules while it is awake, and on the free plan webhooks don't wake it.
- Uptime Kuma only checks your sites while it is awake.
- Syncthing only syncs while it is awake.
- Paperless-ngx only fetches documents from your mailbox while it is awake.
- Home Assistant only runs its automations while it is awake.
- FreshRSS only fetches new articles while it is awake.
- Umami only counts visits while it is awake. A visit wakes it, but that first one may be missed.
- Activepieces only runs its schedules while it is awake, and on the free plan webhooks don't wake it.
- WordPress only runs scheduled posts and plugin jobs while it is awake.
- WAHA and Evolution API are only connected to WhatsApp while they are awake, so messages and webhooks wait until then.
- OmniRoute and 9router only answer your tools while they are awake, and on the free plan a request from a tool doesn't wake them.
- OpenClaw only answers your chat apps and runs its reminders while it is awake, and Hermes Agent only answers and runs its scheduled tasks while it is awake.
- ntfy only delivers notifications published while it is awake; a sleeping ntfy misses them.
- Changedetection.io only checks the pages it watches while it is awake.
- Matomo only counts visits while it is awake. A visit wakes it, but that first one may be missed.
- SerpBear only checks your search rankings while it is awake. A visit wakes it, but a check already due may be missed.
- Mautic only sends campaign emails and updates segments while it is awake. A visit wakes it, but a run already due may be missed.
- Sure only runs its daily account sync and recurring-transaction jobs while it is awake.

On Pro, installing one of these keeps it awake for you.

## Things some apps can't do here

- Immich: face and object search are off, because they need more memory than an app gets here.
- Home Assistant can't see devices on your home network from here, so it works with devices and services you reach over the internet.
- Stirling PDF: very large PDFs can be more than it has memory for.
- Forgejo: Git over SSH doesn't reach apps here, so you push and pull over HTTPS with a password or an access token.
- Linkwarden: anyone who can open it can make an account, and that can't be switched off reliably, so it starts private. Keep it that way. Saving a copy of a page takes most of its memory for a moment, so add links a few at a time.
- OpenCloud sends uploads to itself through its public address, so it only works while that address is public.
- Firefly III: recurring transactions and bill reminders need a daily job to call the app, and nothing here does that for you yet.
- Open WebUI, OpenClaw, Hermes Agent and SillyTavern run no AI model themselves. You bring an API key from a provider, and Open WebUI needs an embedding key as well to search your own documents.
- Hermes Agent is an API here, without its dashboard and terminal chat, which need to run as the machine's owner.
- WAHA and Evolution API: WhatsApp can block a number that is used with a third-party client, so use one you could do without. WAHA's free edition connects one number.
- Activepieces uses most of its memory before it does anything, so large flows may make it restart.
- SillyTavern asks for a user name and password before it opens. The user is admin, and the password is on the app's page after you install it.
- FileBrowser Quantum shows the folders your other apps keep, not their databases. It asks for a password too, made the same way as SillyTavern's.
- Excalidraw is the editor only: nothing you draw is saved to the server, and there is no live collaboration here.
- ntfy has no accounts by default, so anyone who learns a topic name can publish or subscribe to it; keep topic names hard to guess.
- Wallabag reinstalls part of itself on every start, so it wakes more slowly than other apps here, about four minutes rather than a few seconds.
- Etherpad has no per-pad access control: anyone who knows or guesses a pad's name can open and edit it.
- Gitea: Git over SSH doesn't reach apps here, so you push and pull over HTTPS with a password or an access token.
- Dashy has no login on the dashboard page itself by default, so anyone with the address can see and edit it; add users under its own config for a real login.
- Calibre-Web reads an existing Calibre library, it does not create one; upload a library folder with FileBrowser Quantum before it has anything to show.
- Homer has no login and nothing to click to edit: change its config.yml under the app's storage with FileBrowser Quantum to add or edit tiles.
- Fider needs a real mail server before anyone can sign in, since sign-in works by mail link; set EMAIL_SMTP_* under Environment to your own provider.
- Beszel is only the hub: it shows nothing until an agent you install on another machine connects and reports its numbers to it.
- Changedetection.io: nobody is asked for a password until you set one in its Settings, so until then anyone who finds the address can see and change your watches.
- Shlink is the API and the redirects only, not a web dashboard: use its initial API key with a Shlink web client to create and manage links.
- The Lounge runs in private mode with the one account it makes for you; there is no sign-up page.
- Homarr can't see containers running elsewhere from here, so you add tiles by address instead of through its Docker integration.
- Rallly can't send sign-in mail until you add your own SMTP settings under Environment; until then, share a poll's own link and guests can still vote on it without signing in.
- Paisa has no sign-in of its own, so it starts private and only opens on your own devices; keep it that way.
- Roundcube is a mail client for an inbox you already have elsewhere, not a mail server of its own.
- Easy!Appointments: booking confirmations and reminders need SMTP settings of your own mail provider, added after setup.
- Snipe-IT's mail needs SMTP settings of your own mail provider, added after setup.
- Monica: the first account to sign up owns it; after that, turn off new registrations in Settings so nobody else can join.
- RSS-Bridge has no accounts of its own beyond the one password, so without it anyone who finds the address could use it to fetch pages; it is on by default.
- Airsonic Advanced's first start runs a one-time database setup that can take several minutes before it answers; later starts are quick. It signs in with admin/admin until you change the password.
- Convos: the first person to open it registers the only account; sign up as soon as it's running.
- Pinry: the first person to sign up owns it; the project itself moves slowly these days, so don't expect frequent updates.
- NoteDiscovery has no login by default, so treat the app's address as the only thing keeping it private.
- Open DroneLog's interface is built for a larger screen; some things may be cramped on a phone.
- Blinko's AI features (summaries, semantic search) need your own AI provider key, added after setup; it works as a plain note tool without one.
- RSSHub: routes that need a real browser to render the page (marked with a camera icon in the route docs) do not work on this image; most routes do not need one.
- PasswordPusher sets no TLS certificate of its own, so leave any domain-verification setting in its admin area off.
- GlitchTip runs without its optional Valkey cache and task queue, so email digests and some background jobs run inline instead of queued; this does not affect catching errors.
- FreeScout has no mail server of its own; add your own mailbox's SMTP and IMAP settings under Manage > Mailboxes so it can send and fetch mail.
- PhotoPrism only runs the free AGPL core here; its Plus features (upgraded face and object recognition) are not part of this image.
- Tymeslot's PostgreSQL runs bundled inside the app's own storage, not on your plan's managed database.
- ArchiveBox's Chromium runs inside the sandbox with no extra privileges, so archiving a page can take a few minutes; pages with heavy scripts may save without every extractor finishing.
- Mattermost has no mail server configured, so invite your team by sharing a link rather than by email.
- Grimmory is a young fork of the BookLore project under a new name and licence; expect its upgrade path to keep changing.
- Sure is a community fork of the discontinued Maybe Finance app; bank sync providers need their own API keys from their docs, or accounts are tracked by hand.

## Storage and memory

An app reserves the storage the table gives for it from your plan's 10 GB, whether or not it fills it. Nextcloud plus its MariaDB takes 6 of the 10 GB, for example. Most apps use the small size (128 MB reserved, up to 512 MB). n8n, Paperless-ngx, Home Assistant, Stirling PDF, Linkwarden, Docmost, OpenCloud, Activepieces, NocoBase, Open WebUI, OmniRoute, LibreTranslate, OpenClaw, Hermes Agent, WAHA, code-server, Gitea, Kavita, Komga, CommaFeed, Homarr, Rallly, Snipe-IT, Monica, Lychee, Matomo, Airsonic Advanced, Blinko, RSSHub, PasswordPusher, Mautic, GlitchTip and Tymeslot use medium (256 MB reserved, up to 1 GB). Immich, PhotoPrism, ArchiveBox, Keycloak, Mattermost, Metabase, Grimmory and Sure use large (768 MB reserved, up to 2 GB), which comes with Pro.

An app with a database uses your plan's database, and the database reserves its own memory and 1 GB of storage. See [limits](https://blitz.cloud/docs/limits/) for how that adds up.

## Apps that bring a cache

Paperless-ngx, Docmost, Evolution API, Activepieces and Sure bring a small cache (Valkey, which speaks Redis) next to their database, for their background jobs. The cache is part of its app: it sleeps and wakes with it and is deleted with it. It keeps nothing and has no backup, and it doesn't count as one of your plan's databases. Its memory, 48 MB, does count.

## Can I install an app that isn't in the store?

Yes, if there is a public image for it on Docker Hub, ghcr.io, Quay or another public registry, or if you can build it from its code on GitHub. See [deploy a Docker image](https://blitz.cloud/docs/deploy-docker-image/) and [deploy from GitHub](https://blitz.cloud/docs/deploy-from-github/). The store is the list we have tested; those two paths are for everything else.