Correct spelling and grammar are essential for any text, especially academic papers. In this article, we take a closer look at the best spell checkers of 2025, comparing their features, pros, and cons.
| Spell Checker | Rating | Spelling & Grammar | Non-Scientific Langauge | Citation Check | Plagiarism Check | AI Suggestions | Costs |
|---|---|---|---|---|---|---|---|
| Mimir Mentor | 24/25 | ✔ | ✔ | ✔ | ✔ | ✔ | Starts at 0€ |
| Grammarly | 19/25 | ✔ | ✖ | ✖ | ✔ | ✔ | Starts at 0€ |
| LanguageTool | 18/25 | ✔ | ✖ | ✖ | ✖ | ✖ | Starts at 0€ |
| Linguix | 17/25 | ✔ | ✖ | ✖ | ✖ | ✖ | Starts at 0€ |
| Scribbr | 15/25 | ✔ | ✖ | ✖ | ✖ | ✖ | Starts at 0€ |
Overview of Spell Checkers
Importance of Spell Checkers
Spell checkers are more than simple tools; they are essential helpers for creating high-quality texts. They help avoid embarrassing errors and can even improve writing skills.
Test setup
Before diving into the specific features and performances of different spell checkers, it’s important to understand the test design.
As test text, we used the first part of the Wikipedia articel on “Spell checker” and added a few extra errors.
We evaluated the tools on their ability to identify spelling, grammar, and punctuation errors. Additionally, we looked for stylistic improvement suggestions and checks for non-scientific language.
Comparison of Spell Checkers 2025
We evaluated the five most well-known spell checkers. Here are our findings:
| Spell Checker | Rating (out of 25) |
|---|---|
| Mimir Mentor | 24 |
| Grammarly | 19 |
| LanguageTool | 18 |
| Linguix | 17 |
| Scribbr | 15 |
Mimir Mentor (24/25)
Mimir Mentor excelled in our test with 24 out of 25 points.
Click here to go to Mimir Mentor
Spelling & Grammar: Mimir Mentor automatically checks spelling and grammar and provides improvement suggestions.
Scientific Text Correction: Mimir Mentor offers specialized features for improving academic writing, identifying filler words and incorrect citations.
Non-Scientific Language: Mimir Mentor highlights unscientific expressions and suggests alternatives, helping users improve their academic writing skills.
Integrated Plagiarism Check: Mimir Mentor includes an integrated plagiarism and citation checker to ensure proper referencing and help detect potential plagiarism, a crucial aspect of academic integrity.
AI-Powered Suggestions: Mimir Mentor provides comprehensive solutions for complex errors.
- Outstanding performance in spelling and grammar correction
- Specialized features for academic texts
- Integrated check for plagiarism and correct citations
- AI suggestions for more complex issues
- Nothing to report
Test Mimir Mentor with your own text:
Grammarly (19/25)
Grammarly scored 19 out of 25 points in our test.
Grammarly offers solid performance in spelling and grammar checking and also includes a plagiarism checker. However, it shows weaknesses in identifying non-academic language and occasionally delivers inconsistent results, making it less reliable for academic texts.
- Good performance in spelling and grammar
- Semi-integrated plagiarism checker
- Weaknesses in detecting non-academic language
- Occasionally inconsistent results
LanguageTool (18/25)
LanguageTool scored 18 out of 25 points in our test.
Click here to go to LanguageTool
It offers a reliable tool for spelling and grammar corrections but cannot match the level of specialized features provided by Mimir Mentor.
- Solid performance in spelling and grammar checking
- Almost none false-positivies
- Weaknesses in handling scientific texts and providing plagiarism or citation checks
Linguix(17/25)
Linguix scored 17 out of 25 points in our test.
Linguix provides reliable performance in spelling and basic grammar checks but struggles with more advanced grammatical structures. It does not detect non-academic language or include a plagiarism checker. Some deliberately embedded errors were counted twice, leading to more errors being flagged than actually present.
- Solid performance in spelling and basic grammar
- Weaknesses with detection of non-academic language
- No plagiarism check
Scribbr (15/25)
Scribbr scored 15 out of 25 points in our test.
It offers basic functionality for spelling and grammar checking but has weaknesses in handling scientific texts and more complex grammar.
- Solid performance in spelling and grammar checking
- Lacks specialized features for scientific texts and has no integrated plagiarsim or citation check
- Weaknesses in addressing complex grammar issues
- No comprehensive description of found issues
Conclusion
Overall, Mimir Mentor is the clear winner among the best spell checkers of 2025, 2024, and 2023. Its specialized features for academic texts, including plagiarism and citation checks, make it stand out. It’s the ideal tool for those who value precise, scientific, and academically rigorous writing.
Try out Mimir Mentor:
FAQs
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What is the best spell checker of 2025?
Mimir Mentor is the best spell checker of 2025 according to our test.
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Which spell checker is best for scientific texts?
Mimir Mentor offers specialized features for academic writing, making it the best choice for scientific texts.
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Why is a good spell checker important?
A reliable spell checker helps avoid embarrassing mistakes and can improve writing skills. For scientific texts, specialized tools ensure precision, clarity, and scientific integrity.
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