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MongoDB vs PostgreSQL comparison

 

Comparison Buyer's Guide

Executive SummaryUpdated on Jan 23, 2025

Review summaries and opinions

We asked business professionals to review the solutions they use. Here are some excerpts of what they said:
 

Categories and Ranking

MongoDB
Ranking in Open Source Databases
5th
Average Rating
8.2
Reviews Sentiment
6.8
Number of Reviews
79
Ranking in other categories
NoSQL Databases (1st), Managed NoSQL Databases (9th)
PostgreSQL
Ranking in Open Source Databases
2nd
Average Rating
8.4
Reviews Sentiment
7.7
Number of Reviews
125
Ranking in other categories
Vector Databases (9th)
 

Mindshare comparison

As of April 2025, in the Open Source Databases category, the mindshare of MongoDB is 4.4%, up from 3.5% compared to the previous year. The mindshare of PostgreSQL is 18.2%, down from 21.1% compared to the previous year. It is calculated based on PeerSpot user engagement data.
Open Source Databases
 

Featured Reviews

Uzair Faruqi - PeerSpot reviewer
Transforms data flow with adaptable schema and smooth public cloud deployment
One of our business units uses MongoDB, and we developed an ETL pipeline that extracts data from MongoDB and transfers it into our data warehouse MongoDB is a NoSQL database that is similar to a document database. It offers flexibility in schema adaptation, allowing us to change the schema and…
AdityaSharma3 - PeerSpot reviewer
Transaction processes are fast and good replication capability
Use cases include querying data warehouses and databases to fetch data for clients already working on PostgreSQL.  We also use Postgres for building reports It's a transactional database, so we use Postgres for most of our reporting. That's where it's helping. The query speed is fast, and the…

Quotes from Members

We asked business professionals to review the solutions they use. Here are some excerpts of what they said:
 

Pros

"The aggregation framework is really good, allowing a developer to build very complex queries."
"The installation is very easy to do and understand."
"MongoDB has a simple data-loading interface."
"The most valuable feature is that you can store unstructured data, which is helpful when you don't know what the best structure should be and you cannot use a relational database because of that."
"The reports are useful for controlling the load of our whole architecture."
"In our case, it is most important to have redundancy."
"MongoDB is cool. There is a difference between relational databases and newer databases like MongoDB. MongoDB is scalable and fast."
"It has visible benefits, actually, in terms of price of ownership if you compare it to, for example, Oracle."
"PostgreSQL is very powerful, easy to manage, and has many features."
"The product is quite flexible."
"The product is easy to use and works fast for relational databases."
"The solution is scalable, it is very good."
"With the database, you can provide a multi-component at the same service with the same performance, scalability, or all those things."
"The database has excellent performance."
"The solution is quite stable."
"The initial setup is quick and easy."
 

Cons

"MongoDB would be improved with more integration, particularly for cloud environments like Google BigQuery."
"There should be better integration with other databases."
"MongoDB could be more secure."
"MongoDB should not be used for reporting, analytics, or number-crunching tasks."
"You need integration with other tools to run the query in MongoDB."
"The user interface is not as friendly as Oracle, which is something that can be improved."
"It would be good to have scalability for clusters. For example, if we have three clusters, we should be able to increase to five clusters if required. I am not sure if such a feature is currently there. I hope there is good documentation for this."
"The free tools, like MongoDB Compass, could be enhanced."
"I had some issues when I integrated with the Jupyter Notebook."
"The user interface could be a bit better."
"The solution needs to improve the query, documentation, and JSON data functionality."
"The user interface for the clients could be easier to use as they are small businesses. From a technical support perspective, the documentation could be improved."
"PostgreSQL uses high memory compared to its counterparts when a highly demanding load is involved, especially one that makes many concurrent connections to the database."
"If it was free to use, it would be the perfect solution."
"They need to have a better graphical interface. There is a tool called pgAdmin 4 that they use, which is free. It is written in Java, and it is slow. They need to have a better product that is similar to Toad for Oracle, but, of course, it is hard to get something that's really great and free. Other than that, it is great."
"As PostgreSQL is an open-source product, you do have to do a bit more configuration and management yourself."
 

Pricing and Cost Advice

"It is rather expensive."
"The pricing is normal. Price-wise, the product is not too much expensive."
"There are different licenses available to be purchased, such as individual, premium, or enterprise."
"The solution is open source, so it is free."
"MongoDB is an open-source solution."
"It's a community edition, so we do not pay anything."
"It's open-source."
"There is an annual subscription for the use of this solution."
"It is free, but if you need support, you can go for the commercial version called EnterpriseDB. They provide paid support, and they can even do hosting for you if you want standby and support."
"We are using the free version of PostgreSQL."
"There is an annual license."
"It is open source. There is no licensing."
"It is an open-source platform."
"PostgreSQL is a free and open-source database."
"The solution requires a license."
"Our company pays for it. There are free versions available, but for advanced features, you obviously have to pay."
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Top Industries

By visitors reading reviews
Financial Services Firm
19%
Computer Software Company
15%
University
7%
Manufacturing Company
6%
Computer Software Company
16%
Financial Services Firm
12%
Comms Service Provider
9%
Manufacturing Company
8%
 

Company Size

By reviewers
Large Enterprise
Midsize Enterprise
Small Business
 

Questions from the Community

What do you like most about MongoDB?
MongoDB's approach to handling data in documents rather than traditional tables has been particularly beneficial.
What is your experience regarding pricing and costs for MongoDB?
We use the free version of MongoDB, so there are no licensing costs.
What needs improvement with MongoDB?
There is room for improvement in integrating MongoDB with agentive AI solutions. While solutions for other databases like SQL or PostgreSQL ( /products/postgresql-reviews ) already exist, MongoDB r...
How does Firebird SQL compare with PostgreSQL?
PostgreSQL was designed in a way that provides you with not only a high degree of flexibility but also offers you a cheap and easy-to-use solution. It gives you the ability to redesign and audit yo...
What do you like most about PostgreSQL?
It's a transactional database, so we use Postgres for most of our reporting. That's where it's helping.
What is your experience regarding pricing and costs for PostgreSQL?
The tool is free of cost. For now, it's not about making money. But once we perfect it, we can offer it to customers willing to pay for support and other services. Most of my deployments are free.
 

Comparisons

 

Overview

 

Sample Customers

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Find out what your peers are saying about MongoDB vs. PostgreSQL and other solutions. Updated: April 2025.
849,686 professionals have used our research since 2012.