Hammer

Your own sync server for the Hammer writing app — accounts by invitation only.

about €3.70 / month Work & team 815 stars on GitHub Latest commit on November 11, 2026

What Hammer does

Hammer is a tool for planning and writing stories: scenes, characters, notes and timelines, with apps for Windows, macOS, Linux and Android.

This server keeps the projects on all your devices in sync and belongs entirely to you. Accounts exist only for email addresses you have approved.

  • Sync between all your devices
  • Scenes, characters, notes, timelines
  • Invitation-only accounts
  • Runs on small resources

Good to know before the first start. The first visit sets up the admin account. Then approve your co-writers’ email addresses under “Allowed Users” in the admin area — and enter this server as the sync target in the Hammer app on every device.

Additional information

Category
Work & team
Replaces
Scrivener sync, Google Docs drafts
Recommended size
1 cores · 2 GB RAM · 5 GB Storage
Estimated per month
€3.70 At the recommended size, running around the clock. Stop the app and CPU and RAM stop costing.
Links

Common questions

At the recommended size (1 cores · 2 GB RAM · 5 GB Storage) about €3.70 a month, billed by the hour. Stop Hammer and you only pay for storage.

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Your own Hammer, in under a minute.