Category
AI grammar checkers and paraphrasers: what they are and who makes them
free-first correctors, rule-based multilingual checkers, rewriters and readability editors, team and developer checkers: Scribens, Sapling, Linguix through Paperpal.
Types of AI grammar checkers and paraphrasers
Free-first correctors
Scribens and Ginger let anyone paste text and get corrections without a payment, and the trade is advertising or daily limits. Scribens states the free allowance as 8,000 characters a day, which covers most essays and emails but not a manuscript.
Rule-based multilingual checkers
LanguageTool and DeepL Write lean on language coverage and natural phrasing. LanguageTool adds extra rule sets in seven languages on Premium, and DeepL prices Write Pro as a low add-on to its translation plans. Both fit writers who work outside English or in a second language.
Rewriters and readability editors
Wordtune and Hemingway Editor change how a sentence reads, one by suggesting rewrites and the other by highlighting hard sentences. They answer a different question from grammar rules, and many writers run one of them next to a classic checker.
Team and developer checkers
Sapling, Linguix and Grammarly sell seat plans, and Sapling and Linguix also offer APIs for embedding checks into other products. Pricing shifts from a personal subscription to per-seat quotes once ten or more writers share a style guide, and API use is usually metered separately from seats.
Facts at a glance
| Tool | Publisher | Based in | Access |
|---|---|---|---|
| Scribens | Scribens | Not stated on the vendor's pages | Free tier + API |
| Sapling | Sapling Intelligence, Inc. | Not stated (services hosted in the United States) | Free tier + API |
| Linguix | Textly Inc. | Not stated on the vendor's pages | Free tier + API |
| LanguageTool | Learneo, Inc. | United States | Free tier + API |
| DeepL Write | DeepL | Germany | Free tier |
| Ginger | Ginger Software | Not stated on the vendor's pages | Free tier + API |
| Hemingway Editor | Boondoggle Studio, LLC | Not stated on the vendor's pages | Trial |
| ProWritingAid | ProWritingAid | Not stated on the vendor's pages | Free tier + API |
| Wordtune | AI21 Labs Ltd. | Israel | Free tier |
| Grammarly | Superhuman Platform Inc. | United States | Free tier |
| Paperpal | Cactus Communications | Singapore | Free tier |
