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Bun vs JetBrains IntelliJ IDEA

Bun logo

Bun

Software

JavaScript runtime, bundler, test runner and package manager unified in single toolchain

From
Free
Rated
-
Full reviewWebsite
JetBrains IntelliJ IDEA logo

JetBrains IntelliJ IDEA

Software

The Leading Java and Kotlin IDE

From
Free
Rated
-
Full reviewWebsite

The short version

  • Each has a real cost: Bun linux requires kernel 5.6 or higher (5.1 minimum but with compatibility issues); older systems not supported; JetBrains IntelliJ IDEA high memory consumption and slower startup time compared to lightweight editors like Visual Studio Code

Where they differ

Only the attributes on which Bun and JetBrains IntelliJ IDEA actually diverge.

Attributes where Bun and JetBrains IntelliJ IDEA differ
AttributeBunJetBrains IntelliJ IDEA
Pricing modelopen-sourceUnknown
PlatformsmacOS, Windows, Linux, FreeBSD, AndroidmacOS, Windows, Linux
FoundedUnknown2000

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

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 Bun

Nothing recorded that JetBrains IntelliJ IDEA does not also cover.

Only in JetBrains IntelliJ IDEA

  • Smart code completion
  • Framework support
  • Refactoring tools
  • Debugging & profiling
  • Version control
  • Database tools
  • Build tools
  • Testing frameworks

What people use each for

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

Bun

  • High-performance JavaScript services prioritising startup time and memory efficiencynot JetBrains IntelliJ IDEA
  • Single-file executable deployment without Node runtime dependenciesnot JetBrains IntelliJ IDEA
  • Monorepo management with workspace supportnot JetBrains IntelliJ IDEA
  • Full-stack development with unified toolchainnot JetBrains IntelliJ IDEA
  • Systems programming and shell scripting with JavaScriptnot JetBrains IntelliJ IDEA

JetBrains IntelliJ IDEA

  • Enterprise Java developmentnot Bun
  • Spring applicationsnot Bun
  • Android appsnot Bun
  • Web applicationsnot Bun
  • Microservicesnot Bun

Where each one falls short

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

Bun

  • Linux requires kernel 5.6 or higher (5.1 minimum but with compatibility issues); older systems not supported
  • Native Node.js addons not supported directly; requires FFI workarounds for C libraries
  • Ecosystem less mature than Node.js; fewer third-party packages optimised for Bun
  • Windows support newer and less mature than Linux/macOS; occasional edge cases

JetBrains IntelliJ IDEA

  • High memory consumption and slower startup time compared to lightweight editors like Visual Studio Code
  • Refactoring can sometimes increase code line count and doesn't effectively support all modern programming languages
  • Occasionally misses dependencies between files requiring full rebuilds for consistency
  • Expensive subscription costs for Ultimate edition compared to open-source alternatives like Eclipse
  • Not all class name references are updated reliably when using search and replace functionality

Pricing, plan by plan

Bun

Free

No published plan breakdown. See the Bun review.

JetBrains IntelliJ IDEA

Free
  • Community EditionFree
    • Java, Kotlin, Scala development
    • Python, Go, Rust, PHP, Ruby support
    • Spring Boot integration
  • Ultimate (Individual)$19.9/month
    • All Community Edition features
    • Advanced web development tools
    • JavaScript, TypeScript, React support
  • All Products Pack (Individual)$29.9/month
    • IntelliJ IDEA Ultimate
    • PyCharm Professional
    • WebStorm

Which should you pick?

Choose Bun if

  • You want to start without paying.
  • You work on macOS, Windows, Linux, FreeBSD, Android.
Bun review

Choose JetBrains IntelliJ IDEA if

  • You need smart code completion.
  • You want to start without paying.
  • You work on macOS, Windows, Linux.
  • You also want framework support.
JetBrains IntelliJ IDEA review

Questions people ask

Is Bun or JetBrains IntelliJ IDEA better?
Neither clearly leads. Bun starts at Free and JetBrains IntelliJ IDEA at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Bun or JetBrains IntelliJ IDEA?
Bun starts at Free and JetBrains IntelliJ IDEA at Free.
Does Bun or JetBrains IntelliJ IDEA run on more platforms?
Bun runs on macOS, Windows, Linux, FreeBSD, Android. JetBrains IntelliJ IDEA runs on macOS, Windows, Linux.
Can I use Bun for free?
Both have a free tier, so you can try either at no cost before committing.
What is Bun best used for?
Bun is most often used for high-performance javascript services prioritising startup time and memory efficiency, single-file executable deployment without node runtime dependencies, monorepo management with workspace support, full-stack development with unified toolchain. Of those, high-performance javascript services prioritising startup time and memory efficiency and single-file executable deployment without node runtime dependencies are not what JetBrains IntelliJ IDEA is typically brought in for.
What can Bun do that JetBrains IntelliJ IDEA cannot?
JetBrains IntelliJ IDEA covers Smart code completion, Framework support, Refactoring tools, Debugging & profiling.

Answered from the vendors’ own pages

JetBrains IntelliJ IDEA: Is there a free version of IntelliJ IDEA?

Yes, IntelliJ IDEA Community Edition is completely free for personal, educational, and commercial use. As of IntelliJ IDEA 2025.3, the Community Edition has been unified with Ultimate, maintaining all core functionality free including Java, Kotlin, Scala, Python, Go, Rust, PHP, and Ruby support.

Source
JetBrains IntelliJ IDEA: What programming languages does IntelliJ IDEA support?

IntelliJ IDEA supports Java, Kotlin, Scala, Python, Go, Rust, PHP, Ruby, JavaScript, TypeScript, and more. The free Community Edition includes support for all major languages with new features in Spring, Jakarta EE, Thymeleaf, and other frameworks.

Source
JetBrains IntelliJ IDEA: Can I use IntelliJ IDEA with Spring Boot?

Yes, IntelliJ IDEA has built-in Spring Boot integration including the Spring Initializr project wizard, automatic dependency management with Maven and Gradle, code inspections for Spring frameworks, and direct project creation from Spring Initializr.

Source
JetBrains IntelliJ IDEA: Does IntelliJ IDEA support Git version control?

Yes, IntelliJ IDEA includes comprehensive Git integration allowing users to create Git repositories, commit changes, push to GitHub, create and merge branches, resolve conflicts, and investigate file history directly from the IDE.

Source
JetBrains IntelliJ IDEA: How much does IntelliJ IDEA Ultimate cost?

IntelliJ IDEA Ultimate subscription starts at $19.90 per month for Individual plans or $29.90 for the All Products Pack. Long-term discounts apply: 20% off year 2 and 40% off year 3 and beyond, reducing the annual cost significantly for loyal users.

Source
JetBrains IntelliJ IDEA: What are the main differences between IntelliJ IDEA and Eclipse?

IntelliJ IDEA offers a cleaner UI and more powerful code assistance capabilities compared to Eclipse's more complex interface. IntelliJ provides better refactoring tools, superior code completion, and optimized performance, while Eclipse remains free and open-source with a larger plugin ecosystem.

Source
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