Companies with a public line for each tool. Job-post signals count and are drawn apart in the proof bar.
DeepL47 customers
DeepL is used by 47 companies on usedby, 29 confirmed by a case study, a named quote or a press release. Named customers include Amazon, Apple, and Meta. Who uses DeepL, DeepL vs Grammarly
Customer page: deepl.com. Latest check of 47 of 47 lines: Oct 7, 2026.
Grammarly44 customers
Grammarly is used by 44 companies on usedby, 11 confirmed by a case study, a named quote or a press release. Named customers include Zoom, Atlassian, and BlackRock. Who uses Grammarly, DeepL vs Grammarly
Customer page: grammarly.com. Latest check of 44 of 44 lines: Oct 5, 2026.
Wordtune14 customers
Wordtune is used by 14 companies on usedby, 0 confirmed by a case study, a named quote or a press release. Named customers include Google, Nike, and Samsung. Who uses Wordtune, Grammarly vs Wordtune
HyperWrite8 customers
HyperWrite is used by 8 companies on usedby, 0 confirmed by a case study, a named quote or a press release. Named customers include Google, Meta, and Linkedin. Who uses HyperWrite, DeepL vs HyperWrite
Latest check of 6 of 8 lines: Oct 4, 2026.