Companies using Sidekiq by Contributed Systems in 2025
As of 2025, 520 verified companies use Sidekiq – across industries, company sizes, and geographies. This is real, verified data. Whether you’re looking to analyze the market, build a target list, or get a sales edge – this is your starting point.
What is Sidekiq by Contributed Systems?
Sidekiq by Contribsys, is a background processing library for Ruby. It utilizes Redis for message queuing. It’s designed for use in web applications and other software systems requiring asynchronous task execution, and is commonly utilized by software engineering and DevOps teams.
Last updated date
Number of Companies using
520
The majority are based in the
United States
Most common industry?
Software
Sidekiq’s sample user list in 2025
We have data on 520 companies that use Sidekiq. Our Sidekiq customers list is available for download and comes enriched with vital company specifics, including industry classification, organizational size, geographical location, funding rounds, and revenue figures, among others.
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Sidekiq users and customers by country
2.6K Companies
2.6K Companies
2.6K Companies
2.6K Companies
Where Sidekiq Shows Up Most
Sidekiq is used across a wide range of sectors:
Software
Business Services
Custom Software & IT Services
Finance
Business Intelligence (BI) Software
From lean startups to global enterprises, Sidekiq’s footprint is wide, and that means opportunity.

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FAQs
Contact UsHow latest this data is?
This data is updated on August 17, 2025
What is Sidekiq?
Sidekiq by Contribsys is a background processing library for Ruby. It utilizes Redis for message queuing and is designed for web applications needing asynchronous task execution.
How many companies are using Sidekiq in 2025?
As of 2025, 520 verified companies are using Sidekiq.
What industries are most commonly using Sidekiq?
Sidekiq is most commonly used in the Software industry, followed by Business Services and Custom Software & IT Services.
In which countries is Sidekiq most popular?
Sidekiq is most popular in the United States, followed by France and the United Kingdom.
What are some large companies that use Sidekiq?
Some large companies using Sidekiq include Walmart, Apple, McKesson, and Verizon.