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Mainsail

Modern and responsive user interface for the Klipper 3D printer firmware. Control and monitor your printer from everywhere, from any device.

Description from awesome-selfhosted (CC BY-SA 3.0)

Still maintained? Yes: 67 commits in the last 90 days, latest release v2.19.0 (Aug 2026).

Also an alternative to Octoprint Cloud.

Docker #4 of 7 in Manufacturing

At a glance

Mainsail quick facts

Health score
93/100 GOOD
Stars
2,236
Last commit
today (Oct 2026)
Latest release
v2.19.0, Aug 2026
Licence
GPL-3.0
View mainsail-crew/mainsail on GitHub ↗ Website ↗

Top alternatives to Mainsail

Full rankings: Octoprint Cloud alternatives

In its own words

The project's README opens: "Makes Klipper more accessible by adding a lightweight, responsive web user interface, centred around an intuitive and consistent design philosophy."

Why it ranks here

Health score explained

Mainsail scores 93/100, #4 of 7 in Manufacturing: 67 commits in the last 90 days earn 35.0 of 35 points, the latest release (v2.19.0, 2 months ago) earns 25.0 of 25, 2,236 stars add 13.4 of 20, an active, unarchived repository keeps 10 and Docker support adds the final 10. That places it in the good band (70 and above). The biggest shortfall is star count, worth 6.6 more points.

Recomputed nightly from the GitHub API. How the score is calculated.

  • Commit activity 35.0 / 35

    67 commits in 90 days (30+ scores full marks)

  • Release recency 25.0 / 25

    v2.19.0 released 2 months ago

  • Stars biggest shortfall 13.4 / 20

    2.2k stars on GitHub (logarithmic)

  • Not archived 10.0 / 10

    Repository is active

  • Docker support 10.0 / 10

    Docker image or Compose file available

Commit activity

327 commits over the last 12 months
67
Last 90 days
327
Last 12 months
today
Last push

Ranked #4 of 7 tools in Manufacturing by health , between Fluidd (#3) and Manyfold (#5) .

Details

LicenceGPL-3.0
PlatformsDocker, Python
Latest releasev2.19.0 · 2 months ago
Stars2,236
Open issues86
DockerYes
Repositorymainsail-crew/mainsail ↗
Visit website ↗ Source code ↗

Mainsail vs its top 5 alternatives

Active tools that share a comparison page or a category with Mainsail (Manufacturing), scored on the same five terms.

Tool Health Stars Licence Last commit
Octoprint 96 9.2k AGPL-3.0 3 days ago
Spoolman 94 3k MIT yesterday
Fluidd 93 1.8k GPL-3.0 5 days ago
Mainsail (this tool) 93 2.2k GPL-3.0 today
Manyfold 93 2.2k MIT today
CNCjs 66 2.7k MIT 1 month ago

Mainsail: common questions

What does Mainsail replace?

Repoly lists Mainsail as an open-source alternative to Octoprint Cloud. Each comparison page ranks every alternative by the same health score, so you can see where Mainsail stands against the others.

Is Mainsail still maintained?

Mainsail had 67 commits in the last 90 days and its last push was today; the latest tagged release, v2.19.0, is from 2 months ago. Repoly recomputes this nightly.