Side by side

An Gramadóir vs Not Grammarly

Both stand on grammar checkers. Which one you can start free with, which one lets you read the code, and what each costs once you pay.

An Gramadóir

Free plan APILinuxMac+2

An Gramadóir offers Irish checking through web, command-line, Perl, and API routes. Its free GPL license and modular interfaces make it useful for both individual checking and language-tool development.

Visit An Gramadóir

Not Grammarly

Free plan LinuxMacWindows

Not Grammarly combines grammar feedback, style refinement, and cross-application clipboard analysis in a free desktop package. Check platform availability and the requirement for your own OpenAI API key before choosing it.

Visit Not Grammarly

The facts

	An Gramadóir	Not Grammarly
Free plan	Yes	Yes
Open source	Not published	Not published
Runs on	API, Linux, Mac, Web, Windows	Linux, Mac, Windows
Lowest paid plan	Free or on request	Free or on request
Plans published	1	1
Maker	An Gramadóir	Not published
Website	cadhan.com	not-grammarly.com
On grammar checkers	#42 of 88	#38 of 88

An Gramadóir: what it does well

Free under the GNU General Public License
Irish grammar checking via web interface
Command-line and API access
Separate spelling and tagging components
LibreOffice extension available

What to know first

Irish is the implemented language
API requests capped at 16k bytes
Client identifier requested for developers
OpenOffice macro no longer works with latest versions

Not Grammarly: what it does well

Grammar corrections include explanations and scoring
Formal, informal, and concise style options
Clipboard shortcut works from any application
Light, dark, and transparent appearance controls
MIT-licensed desktop project

What to know first

Requires your own OpenAI API key
Windows 10/11 version is listed as coming soon
Linux version is listed as coming soon
macOS downloads target Apple Silicon chips

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