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Which is more popular?
Based on our record, LanguageTool seems to be more popular. It has been mentioned 5 times since March 2021.
Website, pricing, platforms and company facts side by side.
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| Website | languagetool.org | deepspring.ai |
| Platforms | — | |
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What each product offers, as listed by its team.


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Possible disadvantages
An editorial look at what each product does well and who it suits.


Overall verdict
Why this product is good
Recommended for
Overall verdict
Why this product is good
Recommended for
Walkthroughs and reviews on video.
LanguageTool: free and open-source grammar checker
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How often each product is chosen within a category, 0–100% relative to the other.


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External articles and on-site reviews we used to compare the two products.


G2 Ratings: A wrote on G2, expressing their love for LanguageTool. They said they love it because it is an open-source style and grammar checker. Also, they loved how LanguageTool supports many languages.
LanguageTool has a free version that brings a reliable error checker and informs you regarding basic typos errors. The tool also has a premium version, which is packed with features. The Premium version starts at...
LanguageTool is an alternative to both Grammarly and ProWritingAid. It checks and corrects most of the writing mistakes such as grammar and spelling. It supports more than 25 languages. If you use Google Docs, there...
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Recommendations tracked on public social media and blogs since March 2021.


You could check for spelling mistakes first with something like https://languagetool.org/de. Source: almost 4 years ago
I prefer https://www.deepl.com/ and https://languagetool.org/de might be also helpful. Source: almost 4 years ago
I was already used to wiggly lines in my favorite IDE IntelliJ and really missed the spell and grammar check capabilities in other editors especially when writing something in the browser. A colleague told me that IntelliJ is using... - Source: dev.to / over 4 years ago
Tracking ShellMate since Oct 2025.
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