RedPen vs Sapling
RedPen
redpen.cc
Sapling
sapling.aiSide by side
| Figure | RedPen | Sapling |
|---|---|---|
| Price from | — | $12/mo |
| Free plan | — | Yes |
| Free trial | — | Yes |
| Open source | — | — |
| Web | — | Yes |
| Windows | Yes | Yes |
| macOS | Yes | — |
| Linux | Yes | — |
| API | — | Yes |
| Self-hosted | — | Yes |
| Plans published | 0 | 7 |
| Spec score · Writing Style Checkers | 7.0 (#27) | 8.7 (#4) |
| Integrations | The project lists integrations or packages for Atom, Emacs, Vim, WordPress, IntelliJ IDEA, Sublime Text, and Visual Studio Code. | Sapling lists 73 integration guides, including integrations for Zendesk, Salesforce, Slack, Google Docs, Microsoft Word, and browser extensions. |
| Support | The project lists documentation, a mailing list, and English and Japanese chat rooms for support. | The pricing page lists email and ticket support for paid tiers, and dedicated support contact for Enterprise. |
Plans
Sapling
- FreeFree
- Pro$25 a month
- Pro$144 a year
- Enterprise$15 a month
- API$5, paid once
- APIPriced on request
- FreePrice not published
In their own words
Sapling
Sapling combines writing assistance for teams with developer tools for adding language model-powered features to applications. Its writing tools include grammar and spelling corrections, autocomplete, rephrasing, tone and sentiment checks, and AI content detection. Style suggestions and tone detection are available, with support for 14 languages. Developers can access HTTP API endpoints and SDK components, including Python and JavaScript client libraries. Sapling lists 73 integration guides, with examples for Zendesk, Salesforce, Slack, Google Docs, Microsoft Word and browser extensions. It is available on the web, through extensions and Windows, via API, and in self-hosted deployments. Sapling says it uses TLS encryption in transit and AES-256 encryption at rest, and describes GDPR compliance and SOC 2 Type II certification. Enterprise accounts include audit logs, role-based access and single sign-on. The free plan has AI detector limits; paid writing assistance starts at $12/user/mo billed annually, and a 30-day trial is listed. API trials have a character limit and expire after one month.