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Gramformer

Detects and corrects grammatical errors in natural language text.

Status
UnmaintainedNo commits in 1337 days.
Last checked
Checked · Oct 10, 2026
License
Open source
Pricing
Free tier · from $0
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What it is

Gramformer is a framework designed to detect, highlight, and correct grammatical errors within natural language text. It offers developers an easy way to improve the quality of textual content programmatically.

Gramformer stands out as a lightweight, self-hosted solution that focuses on accurate grammatical error detection and correction in natural language text.

When it fits — and when it doesn’t

A good fit for

  • Developers building applications that require real-time grammatical correction.

  • Content creators who need automated assistance in improving text quality.

  • Educators looking for tools to aid students in learning proper grammar.

Look elsewhere if

  • Projects requiring support for multiple languages beyond English.

  • Applications needing real-time streaming capabilities (batch processing only).

Known weaknesses

Each one links to the public issue, changelog or docs page it came from, where we have one.

  1. 01

    Limited language support beyond English

    Documentation and examples focus exclusively on English text correction

What it does well

  • Detects grammatical errors in text.

  • Highlights and corrects detected errors.

  • Can be integrated into various applications for real-time corrections.

Pricing

Free tier
YesOpen source — free to use
Paid from
$0
Model
Flat rate
Enterprise plan
No

Pricing not independently confirmed — check the vendor’s page.

Performance benchmarks

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Set up Gramformer

Setup steps, common gotchas and what to check after 30 days.

Open the setup guide →
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