Best Grammar Checkers in 2026
Updated
88ranked
2free plans on this page
$5/molowest paid tier
9 Oct 2026last checked
Grammar checkers, one module each. A lit port is something its maker publishes; 0 of the 13 on this page have a public API.
- 76 SpellBoy API not on recordOSS not on recordFREE not on recordDOCS 5.1Free
- 77 Verant API not on recordOSS not on recordFREE not on recordDOCS 5.1$5/mo
- 78 WRITER API not on recordOSS not on recordFREE not on recordDOCS 5.1
- 79 StyleWriter API not on recordOSS not on recordFREE not on recordDOCS 5.1$90/mo
- 80 Corrector Castellano API not on recordOSS not on recordFREE not on recordDOCS 5.0
- 81 Le Robert Correcteur API not on recordOSS not on recordFREE not on recordDOCS 5.0
- 82 tinySpell API not on recordOSS not on recordFREE not on recordDOCS 5.0
- 83 BonPatron API not on recordOSS not on recordFREE not on recordDOCS 5.0
- 84 TextAdviser API not on recordOSS not on recordFREE not on recordDOCS 5.0
- 85 abcCorrector API not on recordOSS not on recordFREE not on recordDOCS 5.0
- 86 An Gramadóir API not on recordOSS not on recordFREE not on recordDOCS 4.9
- 87 SayBetter API not on recordOSS not on recordFREE not on recordDOCS 4.7
- 88 Write Wise API not on recordOSS not on recordFREE not on recordDOCS 4.5Free
Compare all 13 in a table
| # | Platform | Score | Free plan | From | Free plan | Paid from | Browser extension | Desktop app |
|---|---|---|---|---|---|---|---|---|
| 76 | SpellBoy | 5.1 | Free plan | Free | Yes | — | — | — |
| 77 | Verant | 5.1 | No | $5/mo | No | — | — | — |
| 78 | WRITER | 5.1 | No | — | Yes | — | — | — |
| 79 | StyleWriter | 5.1 | No | $90/mo | No | — | — | Yes |
| 80 | Corrector Castellano | 5.0 | No | — | Yes | — | — | No |
| 81 | Le Robert Correcteur | 5.0 | No | — | No | — | — | Yes |
| 82 | tinySpell | 5.0 | No | — | Yes | — | — | Yes |
| 83 | BonPatron | 5.0 | No | — | Yes | — | — | No |
| 84 | TextAdviser | 5.0 | No | — | Yes | — | Yes | — |
| 85 | abcCorrector | 5.0 | No | — | Yes | — | Yes | No |
| 86 | An Gramadóir | 4.9 | No | — | Yes | — | — | — |
| 87 | SayBetter | 4.7 | No | — | Yes | — | — | — |
| 88 | Write Wise | 4.5 | Free plan | Free | Yes | — | — | — |