Difference between PouchDB and Couchbase

1. PouchDB :

PouchDB is an open-source, NoSQL, in-line database. It is designed after CouchDB, which is a NoSQL database that powers npm. It is written in JavaScript language. There is no need to perform queries over the network as PouchDB resides inside the browser and thus it makes it extremely faster. It stores data locally using IndexedDB and WebSQL in the browser. 

2. Couchbase :

Couchbase Server is an open-source, distributed, JSON document database that is enhanced for interactive applications. It is also known as Membase. It was developed by Couchbase, Inc. and initially released in August 2010. It is written using C++, Erlang, C, Go languages and its server is designed to provide us with easy-to-scale key-value or JSON document access with high sustained throughput and low latency. 

Difference between PouchDB and Couchbase :

S.NO.	PouchDB	Couchbase
1.	Developed by Apache Software Foundation.	Developed by Couchbase, Inc.
2.	It was initially released in 2012.	It was initially released on August 2010.
3.	It is written using Javascript language.	It is written using C++, Erlang, C and Go languages.
4.	It do not have SQL support.	It provides support to Declarative query language (N1QL) that extends ANSI SQL to JSON.
5.	It only provides Eventual Consistency method to ensure consistency in a distributed system.	It provides us with Eventual Consistency and Immediate Consistency methods to ensure consistency in a distributed system.
6.	It does not supports ACID transactions.	It supports ACID transactions.
7.	In PouchDB, there is no predefined datatypes.	Predefined datatypes of Couchbase are boolean, string, number, etc.
8.	It is server-less. It requires a JavaScript environment (browser, Node.js).	It have Linux, OS X and Windows as server operating systems.
9.	It supports JavaScript programming language.	It supports .NetC, Clojure, ColdFusion, Erlang, Go, Java, JavaScript, Perl, PHP, Python, Ruby, Scala, Tcl programming languages.
10.	It uses HTTP REST JavaScript API.	It uses Native language bindings for CRUD, Query, Search and Analytics APIs.
11.	It uses View functions in JavaScript as server-side scripts.	It uses Functions and timers in JavaScript as server-side scripts.