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MongoDB vs PostgreSQL Comparison (2026)

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4.6

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Good recommendations?

MongoDB

PostgreSQL

Overview

MongoDB is a flexible, scalable NoSQL database that handles structured, semi-structured, and unstructured data for modern applications.

PostgreSQL is an open-source relational database management system (RDBMS), which helps businesses store, manage, and scale data workloads, from single machines to data warehouses with multiple concurrent users.

Platforms supported

Web-based
iPhone app
Android app
Windows Phone app

Typical customers

Freelancers
Small businesses
Mid size businesses
Large enterprises

Customer support

Phone
Online
Knowledge base
Video tutorials

view more detailsview details

Platforms supported

Web-based
iPhone app
Android app
Windows Phone app

Typical customers

Freelancers
Small businesses
Mid size businesses
Large enterprises

Customer support

Phone
Online
Knowledge base
Video tutorials

view more detailsview details

Video & Screenshots

No videos yet

Pricing

Starting from

Per month

Free trial available
Credit cardless trial
Free account
Subscription based

Starting from

0.01

One-time payment

Free trial available
Credit cardless trial
Free account
Subscription based

User reviews

4.7

473

317

151

Value for money

Ease of use

Features

Customer support

91%

would recommend this app

4.6

412

275

126

Value for money

Ease of use

Features

Customer support

89%

would recommend this app

Pros

“Atlas provides a smooth cloud experience with automated backups, scaling options, security features, and integrations with popular cloud environments.”

Edwin V.

Dev manager

“The AI-related capabilities and integrations are also interesting, especially with features like vector search that can support AI applications such as semantic search, recommendation systems, and retrieval-augmented generation (RAG) solutions.”

Edwin V.

Dev manager

“Atlas also removes a lot of the work involved in managing a database in the cloud. As projects become larger, good schema design, indexing, and cost monitoring become more important, so there is still a learning curve beyond the basics.”

Furkan A.

Founder

Pros

“Postgres implements catalog internally, so it stores differently from other RDBMS(s).”

Shaunak P.

Senior Data Engineer

“PostgresSQL is very famous among the data engineering fraternity due to its high resilience and throughput.”

Shaunak P.

Senior Data Engineer

“PgAdmin is best tool to manage the DB with intuitive UI.”

Shaunak P.

Senior Data Engineer

Cons

“No support for joins lead to data duplication and redundancy across document,inflating storage needs”

Namratha C.

Product owner

“Flexibility can easily turn into mess if the data model is not designed carefully from the start.”

Junaid E.

National IT Manager

“Not a suitable database for applications with complex transactions. Despite being widely used today, it is still a young technology.”

Álvaro C.

FullStack Developer

Cons

“The only problem I faced with Postgres SQL was that API people need column comments, and for a table with huge number of columns like 250-300 fields, it is very hard to update column via SQL query. And there is no provision in Postgres to tag comment to a column with DDL statement.”

Shaunak P.

Senior Data Engineer

“The diagram feature isn't as customizable as I would prefer.”

Leslie H.

Student

“One thing that i dislike from PostgreSQL is it's hard to setup and install PostgreSQL at the beginning.”