1. PouchDB：
PouchDB是一个开源的NoSQL嵌入式数据库。它是在CouchDB之后设计的，CouchDB是为npm提供支持的NoSQL数据库。它是用JavaScript语言编写的。由于PouchDB驻留在浏览器内部，因此无需通过网络执行查询，因此它使其速度非常快。它在浏览器中使用IndexedDB和WebSQL在本地存储数据。
2. CouchDB：
CouchDB是一个面向文档的开源NoSQL数据库。它由Apache软件基金会开发，主要关注易用性。 Apache CouchDB是最新的数据库之一。它是2005年发布的多主应用程序，于2008年成为Apache项目。它使用多种格式和协议来存储，传输和处理其数据。它是用Erlang编程语言编写的。 PouchDB和CouchDB之间的区别：
| SR.NO | PouchDB | CouchDB |
|---|---|---|
| 1. | It is developed by Apache Software Foundation. | It is also developed by Apache Software Foundation. |
| 2. | It was released in 2012. | It was released in 2005. |
| 3. | PouchDB server operating systems are server-less, requires a JavaScript environment (browser, Node.js). | CouchDB server operating systems are Android, BSD, Linux, OS X, Solaris and Windows. |
| 4. | It is written using Javascript language. | It is written in Erlang. |
| 5. | It uses HTTP REST JavaScript API. | It uses RESTful HTTP/JSON API. |
| 6. | It supports JavaScript programming language. | It supports C, C#, ColdFusion, Erlang, Java, JavaScript, PHP, PL/SQL, Python, Ruby, etc. |
| 7. | It does not allow access rights for users, that can be defined per database. | It allows access rights for users, that can be defined per database. |
| 8. | It has in-memory capabilities. | It does not have in-memory capabilities. |