diff --git a/README.md b/README.md
index f7348891..eb42303c 100644
--- a/README.md
+++ b/README.md
@@ -662,6 +662,7 @@ API | Description | Auth | HTTPS | CORS |
 | [PrexView](https://prexview.com) | Data from XML or JSON to PDF, HTML or Image | `apiKey` | Yes | Unknown |
 | [Restpack](https://restpack.io/) | Provides screenshot, HTML to PDF and content extraction APIs | `apiKey` | Yes | Unknown |
 | [Todoist](https://developer.todoist.com) | Todo Lists | `OAuth` | Yes | Unknown |
+| [signNow](https://signnow.com/developers?utm_source=github&utm_medium=listing&utm_campaign=link) | signNow’s eSignature API empowers users to quickly complete entire document lifecycles | `OAuth` | Yes | Unknown |
 | [Smart Image Enhancement API](https://apilayer.com/marketplace/image_enhancement-api) | Performs image upscaling by adding detail to images through multiple super-resolution algorithms | `apiKey` | Yes | Unknown |
 | [Vector Express v2.0](https://vector.express) | Free vector file converting API | No | Yes | No |
 | [WakaTime](https://wakatime.com/developers) | Automated time tracking leaderboards for programmers | No | Yes | Unknown |