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Developer Tools · head to head

Moonrepo vs Blacksmith

Moonrepo logo

Moonrepo

Developer Tools

Monorepo build system and version manager platform

From
Free
Rated
-
Full reviewWebsite
Blacksmith logo

Blacksmith

Developer Tools

2x faster GitHub Actions with 60% cost savings

From
Free
Rated
-
Full reviewWebsite

The short version

  • Each has a real cost: Moonrepo smaller community compared to established build systems like Bazel; Blacksmith per-minute pricing model requires estimating usage to predict costs
  • They diverge on capability: Moonrepo covers Task orchestration, Blacksmith covers Bare metal runners.

Where they differ

Only the attributes on which Moonrepo and Blacksmith actually diverge.

Attributes where Moonrepo and Blacksmith differ
AttributeMoonrepoBlacksmith
Pricing modelopen-sourceUnknown
PlatformsWeb, CLIGitHub Actions, Linux, Windows, macOS

Identical on both: starting price (Free), free tier (Yes), user rating (Not yet rated), category (Developer Tools).

What each one covers

Drawn from each product's published feature list. An absence here means we hold no record of it - not that the product lacks it.

Only in Moonrepo

  • Task orchestration
  • Smart hashing
  • Dependency analysis
  • Multi-language version management
  • Contextual detection
  • Integrated development environment
  • Git integration

Only in Blacksmith

  • Bare metal runners
  • Multiple OS support
  • ARM support
  • Docker layer caching
  • Sticky disks
  • GitHub Actions observability
  • Free tier
  • Static IPs

What people use each for

The jobs each tool is most often brought in to do.

Moonrepo

  • Managing multiple language projects in a single repositorynot Blacksmith
  • Automating developer environment setup with consistent toolchain versionsnot Blacksmith
  • Optimizing monorepo builds with intelligent task cachingnot Blacksmith
  • Enforcing consistent development practices across distributed teamsnot Blacksmith

Blacksmith

  • Replacing GitHub Actions runners with faster, cheaper infrastructurenot Moonrepo
  • Accelerating CI build times for organizations with heavy CI loadnot Moonrepo
  • Reducing cloud spend on GitHub Actions by 60% or morenot Moonrepo
  • Supporting ARM architecture builds without GitHub runnersnot Moonrepo

Where each one falls short

Documented limitations, not opinions. Every one is a constraint you would hit in normal use.

Moonrepo

  • Smaller community compared to established build systems like Bazel
  • Limited integrations with enterprise CI/CD platforms
  • Documentation gaps in some advanced use cases
  • No commercial support option for organizations requiring guaranteed SLAs

Blacksmith

  • Per-minute pricing model requires estimating usage to predict costs
  • macOS M4 pricing ($0.08/min) is significantly higher than GitHub Actions
  • Docker layer caching and sticky disks are paid add-ons at $0.50/GB/mo
  • Static IP add-on costs $100/IP/mo

Pricing, plan by plan

Moonrepo

Free

No published plan breakdown. See the Moonrepo review.

Blacksmith

Free
  • Ubuntu x64$0.004/minute
    • 3,000 free minutes per month
    • 2x faster hardware
    • 4x faster cache downloads
  • Ubuntu ARM$0.0025/minute
    • 3,000 free minutes per month
    • 2x faster hardware
    • 4x faster cache downloads
  • Windows x64$0.008/minute
    • 3,000 free minutes per month
    • 2x faster hardware
    • 4x faster cache downloads
  • macOS M4$0.08/minute
    • 3,000 free minutes per month
    • 2x faster hardware
    • 4x faster cache downloads

Which should you pick?

Choose Moonrepo if

  • You need task orchestration.
  • You want to start without paying.
  • You work on Web, CLI.
  • You also want smart hashing.
Moonrepo review

Choose Blacksmith if

  • You need bare metal runners.
  • You want to start without paying.
  • You work on GitHub Actions, Linux, Windows, macOS.
  • You also want multiple os support.
Blacksmith review

Questions people ask

Is Moonrepo or Blacksmith better?
Neither clearly leads. Moonrepo starts at Free and Blacksmith at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Moonrepo or Blacksmith?
Moonrepo starts at Free and Blacksmith at Free.
Does Moonrepo or Blacksmith run on more platforms?
Moonrepo runs on Web, CLI. Blacksmith runs on GitHub Actions, Linux, Windows, macOS.
Can I use Moonrepo for free?
Both have a free tier, so you can try either at no cost before committing.
What is Moonrepo best used for?
Moonrepo is most often used for managing multiple language projects in a single repository, automating developer environment setup with consistent toolchain versions, optimizing monorepo builds with intelligent task caching, enforcing consistent development practices across distributed teams. Of those, managing multiple language projects in a single repository and automating developer environment setup with consistent toolchain versions are not what Blacksmith is typically brought in for.
What can Moonrepo do that Blacksmith cannot?
Moonrepo covers Task orchestration, Smart hashing, Dependency analysis, Multi-language version management. Blacksmith covers Bare metal runners, Multiple OS support, ARM support, Docker layer caching.

Answered from the vendors’ own pages

Moonrepo: What programming languages does Moonrepo support?

Moonrepo's proto version manager supports Node.js, Python, Go, Rust, Deno, Java, Ruby, and other languages, with the build system moon supporting most modern development stacks.

Source
Blacksmith: How much do Blacksmith runners cost compared to GitHub Actions?

Blacksmith offers 60-75% cost savings depending on OS. Ubuntu x64 costs $0.004/min vs GitHub at $0.012/min. All plans include 3,000 free minutes monthly.

Source
Moonrepo: Is Moonrepo suitable for large monorepos?

Yes, Moonrepo is designed to scale to monorepos of any size with intelligent caching and task orchestration to maintain build performance.

Source
Blacksmith: Can I use Docker layer caching with Blacksmith?

Yes, Docker layer caching is available as an add-on at $0.50/GB/mo. Managed Docker layer persistence is included with the base service.

Source
Moonrepo: Can I use just moon or just proto separately?

Yes, moon and proto are independent tools that can be adopted separately or together to address specific team needs.

Source
Blacksmith: What is the SLA for Enterprise plans?

Enterprise Blacksmith plans include a 99.9% SLA guarantee along with 24/7 priority support, dedicated Slack channels, white-glove onboarding, and CI optimization support.

Source
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