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Developer Tools · head to head

Bazel vs Diligent

Bazel logo

Bazel

Developer Tools

Multi-language build system with fast, correct incremental builds

From
Free
Free plan
Yes
Full reviewWebsite
Diligent logo

Diligent

Cybersecurity

Board management and enterprise GRC platform assembled from Galvanize, Steele and Diligent Boards

From
On request
Free plan
No
Full reviewWebsite

The short version

  • Only Bazel has a free tier, so it costs nothing to try first.
  • Each has a real cost: Bazel steep learning curve for developers unfamiliar with build systems; Diligent the platform is an assembly of acquisitions, with the analytics engine from ACL, risk from Rsam, ethics and third-party diligence from Steele and the board portal from Diligent itself, so cross-module reporting and consistent user experience should be tested in a proof of concept rather than assumed.
  • They diverge on capability: Bazel covers Fast incremental builds, Diligent covers Diligent Boards.
  • Prices and features above were last checked on 31 August 2026.

Where they differ

Only the attributes on which Bazel and Diligent actually diverge.

Attributes where Bazel and Diligent differ
AttributeBazelDiligent
Starting priceFreeOn request
Pricing modelopen-sourcequote
Free tierYesNo
PlatformsWindows, macOS, LinuxWeb, iOS, Android, Windows
CategoryDeveloper ToolsCybersecurity

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 Bazel

  • Fast incremental builds
  • Multi-language support
  • Distributed caching
  • Parallel execution
  • Dependency analysis
  • Starlark extensibility
  • Cross-platform support

Only in Diligent

  • Diligent Boards
  • Entity management
  • Audit and analytics
  • Risk management
  • Third-party risk
  • Ethics and compliance
  • ESG and sustainability
  • Market intelligence

What people use each for

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

Bazel

  • Building large monorepos with hundreds of interdependent projectsnot Diligent
  • Multi-language projects requiring consistent build semanticsnot Diligent
  • Organizations requiring reproducible builds and hermetic test executionnot Diligent
  • Teams implementing distributed CI with shared build artifact cachingnot Diligent

Diligent

  • A listed company that wants board papers, entity records and the audit committee reporting pack produced from one governance systemnot Bazel
  • An internal audit function moving from sampling to full-population transaction testing using the ACL heritage analytics enginenot Bazel
  • A regulated firm consolidating a whistleblower hotline, third-party due diligence and policy attestation after an enforcement findingnot Bazel
  • A group needing sustainability disclosure data collected with the same audit trail and controls as financial reportingnot Bazel

Where each one falls short

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

Bazel

  • Steep learning curve for developers unfamiliar with build systems
  • Initial setup complexity; requires BUILD files and Bazel configuration
  • Verbose error messages can be difficult to debug for new users
  • Smaller community and fewer third-party integrations vs enterprise tools

Diligent

  • The platform is an assembly of acquisitions, with the analytics engine from ACL, risk from Rsam, ethics and third-party diligence from Steele and the board portal from Diligent itself, so cross-module reporting and consistent user experience should be tested in a proof of concept rather than assumed.
  • Pricing is unpublished and consistently at the top of the market, and organisations that need only one capability, a board portal or an audit analytics tool, generally pay less and get more from a specialist.
  • Renewal leverage is weak once the board portal is embedded, because directors are the least willing user group to be migrated and that dependency is well understood by the vendor at renewal time.
  • The analytics engine expects real data skills, and audit teams without an analytics-capable member typically use a fraction of what they licensed while paying for all of it.
  • Module-by-module implementation means the promised single view of governance and risk usually arrives years after the first purchase, if the later modules are ever funded.

Pricing, plan by plan

Bazel

Free

No published plan breakdown. See the Bazel review.

Diligent

On request
  • Diligent One Platform$undefined/year
    • Quoted by module and user count
    • Board portal seats priced separately from GRC modules
    • Annual subscription, commonly multi-year

Which should you pick?

Choose Bazel if

  • You need fast incremental builds.
  • You want to start without paying.
  • You work on Windows, macOS, Linux.
  • You also want multi-language support.
Bazel review

Choose Diligent if

  • You need diligent boards.
  • You work on Web, iOS, Android, Windows.
  • You also want entity management.
Diligent review

Questions people ask

Is Bazel or Diligent better?
Neither clearly leads. Bazel starts at Free and Diligent at On request, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Bazel or Diligent?
Bazel has a free tier; the other does not. Paid plans start at Free for Bazel and On request for Diligent.
Does Bazel or Diligent run on more platforms?
Bazel runs on Windows, macOS, Linux. Diligent runs on Web, iOS, Android, Windows.
Can I use Bazel for free?
Yes. Bazel has a free tier, so you can try it without paying. Diligent starts at On request.
What is Bazel best used for?
Bazel is most often used for building large monorepos with hundreds of interdependent projects, multi-language projects requiring consistent build semantics, organizations requiring reproducible builds and hermetic test execution, teams implementing distributed ci with shared build artifact caching. Of those, building large monorepos with hundreds of interdependent projects and multi-language projects requiring consistent build semantics are not what Diligent is typically brought in for.
What can Bazel do that Diligent cannot?
Bazel covers Fast incremental builds, Multi-language support, Distributed caching, Parallel execution. Diligent covers Diligent Boards, Entity management, Audit and analytics, Risk management.

Answered from the vendors’ own pages

Bazel: Does Bazel support distributed builds across CI infrastructure?

Yes, Bazel supports distributed execution and remote caching, allowing build work to be distributed across multiple machines and CI agents.

Source
Diligent: Is Diligent One the same product as Galvanize?

It contains it. Diligent bought Galvanize, the ACL and Rsam merger, for around one billion dollars in April 2021, and its audit analytics and risk modules are that heritage rebranded into Diligent One.

Bazel: What languages can be built with Bazel?

Bazel has built-in support for Java, C++, Go, Python, and Android/iOS development, with additional language support available through custom rules and community extensions.

Source
Diligent: What does Diligent cost?

Not published. It is quoted by module and user, and board portal seats are priced differently from GRC seats. Expect an annual or multi-year enterprise agreement.

Bazel: Can I use Bazel for small projects or is it only for large monorepos?

While Bazel excels at handling large projects, it can be used for smaller codebases. However, the setup overhead may not be justified for very small or simple projects.

Source
Diligent: Can you buy just the board portal?

Yes, Diligent Boards is sold on its own and is the most common entry point. The GRC modules are separate purchases.

Diligent: Does it replace a SOC 2 automation tool?

No. Diligent is aimed at enterprise audit, risk and governance, not at automated evidence collection for security certifications.

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