Developer Tools · head to head
ESLint vs GNAT Pro
GNAT Pro
Developer Tools
Software development environments and toolchains for Ada, C/C++ and Rust
- From
- On request
- Rated
- -
The short version
- Only ESLint has a free tier, so it costs nothing to try first.
- Each has a real cost: ESLint slow performance on large codebases compared to newer tools like Oxlint and Biome; GNAT Pro no pricing published on website; requires contacting AdaCore directly for quotes
Where they differ
Only the attributes on which ESLint and GNAT Pro actually diverge.
Identical on both: user rating (Not yet rated), category (Developer Tools).
What people use each for
The jobs each tool is most often brought in to do.
ESLint
- Statically analysing JavaScript and JSX to find problems before runtimenot GNAT Pro
- Automatically fixing issues with syntax-aware rewritesnot GNAT Pro
- Enforcing a consistent code style across a teamnot GNAT Pro
- Running as a CI step to block non-conforming codenot GNAT Pro
- Writing custom rules for project-specific conventionsnot GNAT Pro
GNAT Pro
- Building certified avionics software meeting DO-178B/C standardsnot ESLint
- Developing automotive embedded systems with ISO-26262 compliancenot ESLint
- Integrating Ada, C/C++, and Rust components in single codebasenot ESLint
- Managing software supply chain vulnerabilities and SBOMsnot ESLint
- Supporting long-lived software systems spanning decadesnot ESLint
Where each one falls short
Documented limitations, not opinions. Every one is a constraint you would hit in normal use.
ESLint
- Slow performance on large codebases compared to newer tools like Oxlint and Biome
- Complexity in configuration from scratch, particularly for TypeScript support
- Limited built-in TypeScript support, requiring separate parsers and coordination with new TypeScript features
GNAT Pro
- No pricing published on website; requires contacting AdaCore directly for quotes
- Vendor indicates per-user, per-year subscription model but does not disclose specific costs
Pricing, plan by plan
ESLint
FreeNo published plan breakdown. See the ESLint review.
GNAT Pro
On requestNo published plan breakdown. See the GNAT Pro review.
Which should you pick?
Choose ESLint if
- You want to start without paying.
- You work on Browser-based JavaScript, Node.js, Any JavaScript environment.
Choose GNAT Pro if
Nothing in the data separates GNAT Pro from ESLint on the points above - pick on price and on how each one feels to use.
Questions people ask
- Is ESLint or GNAT Pro better?
- Neither clearly leads. ESLint starts at Free and GNAT Pro at On request, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
- Which is cheaper, ESLint or GNAT Pro?
- ESLint has a free tier; the other does not. Paid plans start at Free for ESLint and On request for GNAT Pro.
- Does ESLint or GNAT Pro run on more platforms?
- ESLint runs on Browser-based JavaScript, Node.js, Any JavaScript environment. GNAT Pro runs on Web.
- Can I use ESLint for free?
- Yes. ESLint has a free tier, so you can try it without paying. GNAT Pro starts at On request.
- What is ESLint best used for?
- ESLint is most often used for statically analysing javascript and jsx to find problems before runtime, automatically fixing issues with syntax-aware rewrites, enforcing a consistent code style across a team, running as a ci step to block non-conforming code. Of those, statically analysing javascript and jsx to find problems before runtime and automatically fixing issues with syntax-aware rewrites are not what GNAT Pro is typically brought in for.
Answered from the vendors’ own pages
ESLint: Does ESLint automatically fix code issues?
Many problems ESLint finds can be automatically fixed via the --fix flag. ESLint fixes are syntax-aware so you won't experience errors introduced by traditional find-and-replace algorithms.
SourceGNAT Pro: How much does GNAT Pro cost?
GNAT Pro pricing is not published on the website. Customers must request a pricing quote by contacting AdaCore directly or speaking with a GNAT Pro expert.
SourceESLint: How much does ESLint cost?
ESLint is completely free and open-source software maintained by the OpenJS Foundation. The project accepts voluntary donations from sponsors.
SourceGNAT Pro: What is GNAT Pro licensing model?
GNAT Pro is sold on a per-user, per-year basis with no license locks. Customers can request pricing for their specific needs.
SourceESLint: Can I write custom ESLint rules?
Yes. You can develop custom rules that work alongside built-in functionality through ESLint's plugin system, allowing complete customization for your project needs.
SourceRelated pages
Other head to heads
- ESLint vs Visual Studio Code
- ESLint vs pnpm
- ESLint vs Turborepo
- ESLint vs GitHub Copilot
- ESLint vs Penpot
- ESLint vs Keycloak
- ESLint vs Rust
- ESLint vs CLion
- ESLint vs IAR Embedded Workbench
- ESLint vs GNU Emacs
- ESLint vs Keil MDK
- ESLint vs Vite
- ESLint vs Bazel
- ESLint vs CodeSandbox
- ESLint vs Eclipse IDE
- ESLint vs Moonrepo
- ESLint vs Nx Cloud
- GNAT Pro vs Visual Studio Code
- GNAT Pro vs pnpm
- GNAT Pro vs Turborepo
- GNAT Pro vs GitHub Copilot
- GNAT Pro vs Penpot
- GNAT Pro vs Keycloak
- GNAT Pro vs Rust
- GNAT Pro vs CLion
- GNAT Pro vs IAR Embedded Workbench
- GNAT Pro vs GNU Emacs
- GNAT Pro vs Keil MDK
- GNAT Pro vs Vite
- GNAT Pro vs Bazel
- GNAT Pro vs CodeSandbox
- GNAT Pro vs Eclipse IDE
- GNAT Pro vs Moonrepo
- GNAT Pro vs Nx Cloud