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Developer Tools · head to head

Blacksmith vs Zscaler Internet Access

Blacksmith logo

Blacksmith

Developer Tools

2x faster GitHub Actions with 60% cost savings

From
Free
Free plan
Yes
Full reviewWebsite
Zscaler Internet Access logo

Zscaler Internet Access

Cybersecurity

Secure cloud-native internet and SaaS access

From
$100/year
Free plan
No
Full reviewWebsite

The short version

  • Only Blacksmith has a free tier, so it costs nothing to try first.
  • Each has a real cost: Blacksmith per-minute pricing model requires estimating usage to predict costs; Zscaler Internet Access the pricing page names two base tiers, Essentials Platform and Zscaler Platform, plus modular add ons including three Digital Experience Monitoring tiers, but publishes no dollar figures anywhere and routes buyers to a demo request for cost
  • They diverge on capability: Blacksmith covers Bare metal runners, Zscaler Internet Access covers Secure web gateway.
  • Prices and features above were last checked on 30 August 2026.

Where they differ

Only the attributes on which Blacksmith and Zscaler Internet Access actually diverge.

Attributes where Blacksmith and Zscaler Internet Access differ
AttributeBlacksmithZscaler Internet Access
Starting priceFree$100/year
Pricing modelUnknownsubscription
Free tierYesNo
PlatformsGitHub Actions, Linux, Windows, macOSWeb, Desktop, Mobile
CategoryDeveloper ToolsCybersecurity
FoundedUnknown2007

Identical on both: user rating (Not yet rated).

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 Blacksmith

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

Only in Zscaler Internet Access

  • Secure web gateway
  • Cloud firewall
  • URL filtering
  • Advanced threat protection
  • Data loss prevention
  • Cloud sandbox
  • Browser isolation
  • CASB

What people use each for

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

Blacksmith

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

Zscaler Internet Access

  • Cloud Securitynot Blacksmith
  • Zero Trustnot Blacksmith
  • Web Securitynot Blacksmith

Where each one falls short

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

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

Zscaler Internet Access

  • The pricing page names two base tiers, Essentials Platform and Zscaler Platform, plus modular add ons including three Digital Experience Monitoring tiers, but publishes no dollar figures anywhere and routes buyers to a demo request for cost

Pricing, plan by plan

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

Zscaler Internet Access

$100/year
  • ZIA Business$100/year
    • Web security
    • URL filtering
    • Cloud firewall
  • ZIA Transformation$200/year
    • All Business features
    • Advanced threat protection
    • Cloud sandbox
  • ZIA Unlimited$350/year
    • All Transformation features
    • Cloud browser isolation
    • CASB

Which should you pick?

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

Choose Zscaler Internet Access if

  • You need secure web gateway.
  • You work on Web, Desktop, Mobile.
  • You also want cloud firewall.
Zscaler Internet Access review

Questions people ask

Is Blacksmith or Zscaler Internet Access better?
Neither clearly leads. Blacksmith starts at Free and Zscaler Internet Access at $100/year, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Blacksmith or Zscaler Internet Access?
Blacksmith has a free tier; the other does not. Paid plans start at Free for Blacksmith and $100/year for Zscaler Internet Access.
Does Blacksmith or Zscaler Internet Access run on more platforms?
Blacksmith runs on GitHub Actions, Linux, Windows, macOS. Zscaler Internet Access runs on Web, Desktop, Mobile.
Can I use Blacksmith for free?
Yes. Blacksmith has a free tier, so you can try it without paying. Zscaler Internet Access starts at $100/year.
What is Blacksmith best used for?
Blacksmith is most often used for replacing github actions runners with faster, cheaper infrastructure, accelerating ci build times for organizations with heavy ci load, reducing cloud spend on github actions by 60% or more, supporting arm architecture builds without github runners. Of those, replacing github actions runners with faster, cheaper infrastructure and accelerating ci build times for organizations with heavy ci load are not what Zscaler Internet Access is typically brought in for.
What can Blacksmith do that Zscaler Internet Access cannot?
Blacksmith covers Bare metal runners, Multiple OS support, ARM support, Docker layer caching. Zscaler Internet Access covers Secure web gateway, Cloud firewall, URL filtering, Advanced threat protection.

Answered from the vendors’ own pages

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
Zscaler Internet Access: How many pricing tiers does Zscaler Internet Access offer?

Zscaler Internet Access offers two main platform bundles: the Essentials Platform (entry-level) and the Zscaler Platform (comprehensive). Specific pricing is not published online.

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
Zscaler Internet Access: Are there optional add-on modules available?

Yes. Zscaler offers extensive optional capabilities in five categories including Inline Cyberthreat Protection, Private Access enhancements, Data Security, Security Operations, and Zero Trust Branch.

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
Zscaler Internet Access: How is Zscaler Zero Trust Branch priced?

Zero Trust Branch is sized by encrypted throughput (200 Mbps to 10 Gbps) or endpoint count (200 to 5,000 endpoints), with pricing varying by configuration.

Source
Zscaler Internet Access: How do I get Zscaler pricing?

Zscaler does not publish pricing online. You must request a demo or contact their sales team to receive a pricing quote.

Source
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