Harper Hosting Live In 5 Minutes

Deploy Harper hosting and give your team a private grammar and spell-check editor on your own domain. xCloud runs the pinned Harper 2.12.0 web image with a private MariaDB 12.2 database, generates the database credentials, mounts a persistent volume and publishes the editor over HTTPS in minutes. Checking runs in the visitor's browser, and there is no sign-in, so you decide who can reach it.

Deploy your Harper

No terminal
No technical skills needed
No lock-in, cancel anytime

What is Harper?

Harper is an English grammar checker that upstream describes as privacy-first and small enough to load via WebAssembly. It lints text in milliseconds in the visitor's own browser, so nothing you write is sent to a grammar service. Run on your own server it is a self-hosted Harper, an alternative to a cloud grammar checker such as Grammarly, with the code under the Apache-2.0 licence.

On xCloud it is Harper 2.12.0 as a community-built web image, pinned by digest, with a private MariaDB 12.2 database. The database holds only data the site itself collects, such as lint reports. The editor lives at /editor, the upstream admin pages are disabled and return 404, and there is no sign-in at all, so anyone who can reach the domain can use it. Upstream supports English only.

From Sign-Up to a Live Harper In Just 3 Easy Steps

A Harper stack normally means a web container, a private database, generated credentials, a volume, a domain and a certificate before the first sentence. This is the same result without assembling any of it.

Step 01
Sign Up
Create your xCloud account and pick Harper from the OneClick catalog. Choose your domain and target server; there are no extra fields to fill in.
Step 02
We Deploy It For You
One click. We start the community-built Harper web image, pinned by digest, with a private MariaDB 12.2 database kept off the public internet, mount harper_db, generate the database credentials and publish it over HTTPS.
Step 03
Open The Editor
Open your HTTPS Harper URL and go to /editor. Type or paste text and review the suggestions as you write. There is no account to create, so add Basic Authentication or IP management if the editor should not be public.

Everything Harper Does, On Your Own Server

Harper runs in full here: a browser-based grammar and spell-check editor on your own domain, backed by a database you own.

Grammar And Spell Checking
Checking runs locally in the browser via WebAssembly, so your writing is not sent to a third-party grammar service.
A Ready Editor At /editor
Type or paste text and see suggestions as you write, with no setup beyond opening the page.
No Accounts To Manage
There is no sign-in system. Restrict access with xCloud Basic Authentication or IP management if the editor should not be public.
English Grammar And Spelling
Upstream currently supports English only, though its core is built to support other languages later.
Private MariaDB Included
MariaDB 12.2 is reachable only inside the install's private network, with no published port.
Admin Pages Disabled
The upstream admin pages are disabled in this image and return 404, keeping the surface to the editor itself.

Everything You Need To Run Your Grammar Checker 24/7

Managed hosting for Harper, so the parts that keep it online are not your problem.

Harper 2.12.0 deployed instantly
Community-built image pinned by digest
Database credentials generated for you
Free SSL certificate
MariaDB on a persistent volume
Server backups and snapshots
Server security updates included
30+ server locations
Unused balance refunded

What You Can Do With Harper

Check writing without sending it away
Run grammar and spell checks in the browser on a server you control.
Give a team one private editor
Share a single grammar-checking URL on your own domain with your colleagues.
Replace a cloud grammar checker
Check grammar in the browser on your own domain instead of through a hosted checker account.
Draft documents with instant suggestions
Paste text into the editor and review suggestions as you write.

Harper vs Alternatives

Grammarly: As a self-hosted alternative to Grammarly, Harper is an Apache-2.0 English grammar checker that lints text in your browser via WebAssembly.
LanguageTool: LanguageTool has its own OneClick page. In a Harper vs LanguageTool comparison, Harper currently supports English only and runs its checks in the visitor's browser.
Etherpad: Etherpad has its own OneClick page. Harper's /editor checks one text at a time in the browser, with no accounts.
BookStack: BookStack has its own OneClick page. Harper's editor checks text rather than organising documents, so use it on a draft before you publish it elsewhere.

Simple Pricing. Everything Included.

Dedicated Cloud VPS sizes, pre-configured for Harper hosting. Pick the one that fits, and resize any time.

Cloud VPS 6 GB

Cloud VPS 16 GB

More headroom if Harper sits alongside other writing and docs tools.

$59.99per month

16 GB RAM
6 vCPU cores
200 GB NVMe SSD
30 TB
Unlimited

Get started

Every size is a dedicated Cloud VPS we provision, patch, monitor and restore. Billed monthly with no lock-in — delete the server and the unused balance comes back to your account. Harper is licensed under Apache-2.0.

Docker hosting

Already Have a Server? Bring Your Own

Connect any VPS — DigitalOcean, Vultr, Linode, AWS, Hetzner or bare metal — and deploy Harper on it through the same panel, for a per-server management fee instead of a Cloud VPS rental.

Free

Start your journey without cost.

$0forever

1 server
10 sites

Start free

Starter

Professional

The same platform, discounted at 6–10 servers.

$4per server / month

6–10 servers
Unlimited sites
All features included
Bring any VPS provider

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Agency

The same platform, discounted at 11+ servers.

$3per server / month

11+ servers
Unlimited sites
All features included
Bring any VPS provider

Get started

Priced per connected server, so your rate adjusts automatically as you add or remove servers. You pay your own provider for the server itself.

Self-managed hosting

Ready To Run Your Own Grammar Checker?

Harper on xCloud runs on a dedicated Cloud VPS that we provision, patch, monitor and restore. Deploy faster. Own your data. Stay in control.

Fast Provisioning
Deploy faster using an xCloud Managed Server built with optimized stacks and high-speed SSDs.
Enterprise-grade security
Protect your infrastructure with a free SSL certificate and more advanced security features at no additional cost.
Intuitive Control Panel
From Server creation to application deployment, everything can be managed from our intuitive control panel.

Hear what people are saying about us

See why agencies, developers, startups, and growing businesses choose xCloud to power their projects.

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Frequently Asked Questions

Feel free to contact us with any questions or concerns you may have.

Can I run Harper in Docker?

Yes, and this template is Harper Docker hosting without the setup: the community-built Harper 2.12.0 web image and MariaDB 12.2, with a persistent database volume, generated credentials, a private network for the database and HTTPS on your own domain.

How much RAM does Harper need?

The template baseline is 1024 MB of RAM, 1 CPU core and 4 GB of disk; measured idle use in QA was about 125 MB. The 6 GB plan is the starting point here, well above that baseline.

How do I sign in to Harper?

You don't: there are no accounts or admin sign-in. Open /editor on your domain and start typing. Anyone who can reach the domain can do the same, so restrict access with Basic Authentication or IP management if needed.

Is my writing sent to a server when I use Harper?

No. Checking runs in the visitor's browser through WebAssembly rather than on a remote service. The MariaDB database stores only data the site itself collects, such as lint reports, and is not exposed to the internet.

Which languages does Harper support?

Upstream currently supports English only, though its core is extensible to other languages. The template deploys version 2.12.0 and adds no language packs, so plan around English grammar and spelling for now, and judge other languages elsewhere.

Is the Harper editor public?

Yes by default. There is no sign-in, so the editor is open to anyone who can reach your domain. Use xCloud Basic Authentication or IP management to restrict it. The first load can show a blank page for a few seconds.

Is Harper free?

Yes. Harper is open source under the Apache-2.0 licence, so the software has no licence fee. You are billed only for the dedicated Cloud VPS hosting the editor and its database, which makes it a Harper cloud of your own.

How do I back up Harper?

Back up the harper_db volume, which holds the MariaDB data, and keep the generated database credentials private. Nothing schedules the copy, so run it yourself. Grammar checking itself runs in each visitor's browser, not on the server.

Backup and restore Docker apps

How do I upgrade Harper?

The install stays on its pinned 2.12.0 image until you adopt a newer template version. Back up harper_db first and read the upstream release notes. Existing sites are never upgraded automatically, and the redeploy keeps the database volume.

What happens if I change the domain?

The ORIGIN environment value must equal the site's public HTTPS address. If you change the domain, update ORIGIN in the Environment editor and Save and Redeploy so the editor keeps working. Passwords for MariaDB are unaffected by a domain change.

Can I cancel anytime?

Yes. There is no lock-in — cancel any time. Hosting is billed monthly and charged for what you actually use, so when you delete the server the unused balance is refunded to your account, less up to 10% in payment-processing fees.