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Firebird SQL vs IBM Informix comparison

 

Comparison Buyer's Guide

Executive SummaryUpdated on Mar 4, 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

Firebird SQL
Ranking in Embedded Database
3rd
Average Rating
7.8
Reviews Sentiment
7.4
Number of Reviews
15
Ranking in other categories
Open Source Databases (3rd)
IBM Informix
Ranking in Embedded Database
10th
Average Rating
8.2
Reviews Sentiment
7.5
Number of Reviews
17
Ranking in other categories
Relational Databases Tools (23rd)
 

Mindshare comparison

As of January 2026, in the Embedded Database category, the mindshare of Firebird SQL is 17.8%, down from 24.9% compared to the previous year. The mindshare of IBM Informix is 2.3%, up from 1.2% compared to the previous year. It is calculated based on PeerSpot user engagement data.
Embedded Database Market Share Distribution
ProductMarket Share (%)
Firebird SQL17.8%
IBM Informix2.3%
Other79.9%
Embedded Database
 

Featured Reviews

reviewer1991775 - PeerSpot reviewer
Chapter Lead at a financial services firm with 201-500 employees
An open-source database to hold customer data, but its performance should be improved
Firebird SQL significantly improved our data management in many parts of our self-developed ERP system. I rate the solution's performance and speed a six out of ten. Two or three database administrators are needed to maintain the solution. A few years ago, migrating data to or from Firebird SQL was a little bit difficult because the identifier names for tables or stored procedures were limited to 20 to 30 characters. Transferring the structure to Firebird SQL was difficult, but they fixed it in version 3, which was much easier. We are developing software with Delphi, and Delphi is also by Embarcadero. Using InterBase or Firebird SQL databases is very common, and you have some good tools for developing with Firebird SQL. Overall, I rate the solution a seven out of ten.
Nasir Niamat - PeerSpot reviewer
DB Consultant at i2c
Has offered a cost-effective option despite frequent technical issues and limited market demand
We find some bugs in IBM Informix. Maybe we are using it more aggressively than others. Every month or every second month, we find some bugs in it, which is not ideal. It should be rare, not this frequent. The good thing is they cover those bugs in the next release within weeks or days on demand. IBM Informix should become hybrid and should include AI features similar to other DBMS systems such as Snowflake, Redshift, and DataBricks. This would help its value rise with the market.

Quotes from Members

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

Pros

"The most valuable feature of the solution is that it is reliable, offers good performance, and is easy to use."
"I find the ease of deployment to be the most valuable aspect of this solution."
"The product was easy to use."
"Robustness is the absolutely main feature."
"We are happy with the event capabilities of Firebird SQL database. We can raise events from it and display them in our application."
"Firebird SQL is an open-source solution and can run on most operating systems, such as Linux, Unix, and Windows."
"I appreciate the fact that, once the database is embedded, it doesn't need to be administered, and removes the requirement for a specific server."
"Firebird SQL is an open-source solution."
"Replication, all levels of replication, query charting, and the MongoDB embedded are the most valuable features of this solution."
"It is very easy to install IBM Informix, very easy to scale, and support is quite better."
"It supports in-house-built applications in .NET and VB6"
"This solution has made financial reporting possible by allowing financial people the opportunity to set Informix to "Auto Pilot" so that they can attend other duties."
"The solution's stability, performance, enhanced functionality, and replication are all great features."
"It supports multiple applications and business intelligence tools."
"The stability is incredible. I have customers with uptimes of several years."
"For IoT business cases, having Informix Enterprise Edition work on edge computers, like Raspberry Pi and using Informix replication, makes complex situations simple to build and maintain."
 

Cons

"Technical support and performance could be better. We have some problems with this solution, but we don't know if the problem is with the database or the configuration. For example, sometimes, the users can't access the database."
"The security of the users could improve in Firebird SQL."
"The main feature I expect is to be able to work with different databases at the same time because that's a wishlist item for me."
"It would be good to have more automation and integration with the tools from other vendors."
"This solution isn't very user-friendly, or intuitive, which could be improved when it is developed."
"On large databases, we have some difficulties."
"We would like to improve the management of very large databases."
"In the next release, it should support JSON, XML, and replication with third-party tools."
"This product could be made easier to use for beginners."
"In my opinion, the packages could be improved. The version I use doesn't allow for packages. I can do some general procedures, but no packages like in Oracle. So, develop separate modules in SQL language. This would be most beneficial for me."
"The solution really doesn't add new features very often."
"I would like to see backups from secondary servers."
"The support team could include local engineers to establish efficient communication. It will help us speed up the escalation process."
"Continue extending the SQL language for compatibility with the competition's language, including Stored Procedure Language."
"The solution lacks some functionality."
"This solution is in need of more current tools."
 

Pricing and Cost Advice

"It's open-source and free."
"We are using the free solution, so there is no cost involved."
"There is a yearly maintenance fee for the use of the solution."
"The tool is open source."
"Firebird SQL is an open-source solution, which means it is a free product."
"I was using the free version of Firebird SQL."
"There is no licensing cost for this solution, as it is open-source."
"It is a public domain system as every customer can install it on their system without paying any license fee."
"I am not aware of the licensing costs or terms."
"The product has reasonable pricing. We purchase its yearly license."
"For me, it's always too expensive."
"The free edition can be enough to handle moderate-size implementations, but you may want a pay for edition to benefit from more functionality, such as replication."
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Top Industries

By visitors reading reviews
Computer Software Company
14%
Comms Service Provider
11%
Manufacturing Company
9%
Financial Services Firm
9%
Financial Services Firm
9%
University
9%
Computer Software Company
9%
Manufacturing Company
7%
 

Company Size

By reviewers
Large Enterprise
Midsize Enterprise
Small Business
By reviewers
Company SizeCount
Small Business11
Midsize Enterprise3
By reviewers
Company SizeCount
Small Business9
Midsize Enterprise2
Large Enterprise8
 

Questions from the Community

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 Firebird SQL?
Firebird SQL is an open-source solution.
What do you like most about IBM Informix?
It supports multiple applications and business intelligence tools.
What is your experience regarding pricing and costs for IBM Informix?
There is a cost reason to move from IBM Informix. It is relatively cheaper than Oracle. The second reason is that moving the whole application to a new database would require significant cost. The ...
What needs improvement with IBM Informix?
We find some bugs in IBM Informix. Maybe we are using it more aggressively than others. Every month or every second month, we find some bugs in it, which is not ideal. It should be rare, not this f...
 

Comparisons

 

Also Known As

No data available
Informix
 

Overview

 

Sample Customers

Elekt Labs, Streamsoft, wobe-systems GmbH, DRB Systems, Moscow City Hospital #31
Shaspa, Hildebrand, Kaifa, Ranhill Powertron, Federaci‹ Farmacutica (FedeFarma), Camden Council, The German Aerospace Center (DLR), Myers, Votorantim Group, Doosan Infracore, GreenIvory
Find out what your peers are saying about Firebird SQL vs. IBM Informix and other solutions. Updated: December 2025.
881,082 professionals have used our research since 2012.