CircleCI Reviews in June 2026: User Ratings, Pros & Cons

Get continuous integration working quickly.

What do you like best? The ability to SSH into test machines is invaluable. This lets you figure out errors very quickly. It would be great to do this locally but SSH is nearly as good. What do you dislike? The documentation for 2.0 is sparse right now. Fortunately, the support staff is responsive. If something isn't clear it's quick to discuss with them. Recommendations to others considering the product: There's an initial learning curve to configuring the test, but CircleCI does a ...

Better than the rest

What do you like best? Circle integrates easily into github. Circle also allow us to split up our tests across 16 instances which saves us a lot of time. We don't have to worry about the details of CI, which allows my team to focus more on delivery. What do you dislike? There is often instability and its not always clear what the problems are. We often find that versions of things are updated without us knowing. Because we rely so heavily on circleci, when its down or has problems we are ...

Good Service

What do you like best? - Mainly speed and flexibility, in how the test platform can be configured to run the workload exactly as I wanted - Support is actually very good and very technical, easily the best I have seen in a vendor What do you dislike? - It is not easy to test systems built against Ubuntu 16.04 (only Ubuntu 14.04 available out of the box - Sometimes tests are slow - Containers are allocated evenly across projects in the organisation, so projects that have slow tests ...

Good for small to medium sized projects, not ideal for large projects with artifacts to deploy

What do you like best? CircleCI is easy to set-up. It typically automatically can detect the best way to run most types of projects -- both Ruby on Rails and Java. What do you dislike? CircleCI makes it difficult to get a comprehensive view of what tests are running vs. what tests have run on each branch or remote. Compared to other tools I've used -- like TeamCity -- It feels like you really have to go searching to understand what's happening with your builds. It's not easy to see in one ...

Clean and simple

What do you like best? Works simply. With a simple file you can configure your CI and all works fine. The free plan is really great and helpful. We can start to use circle-ci without any cost and solve a lot of problem in start. With time if we grow we can start payment and the insight get with payment are usefull What do you dislike? the docker support is medium. We need add some trick to work with it. I rewrite almost all step to works fine and be sure my docker is well test. ...

A modern CI platform that just works

What do you like best? CircleCI offers simple YAML configuration that gets committed with the code repository, meaning we don't have to spend time visiting the CircleCI UI unless we actually want to check the dashboard. Circle integrates with everything, the most important of which for us is GitHub. What do you dislike? CircleCI can often feel a bit sluggish, even with a multi-concurrency plan. The issue isn't so much with concurrency as it is the time it takes to spin up a single ...

CircleCI was with us all the way

What do you like best? So far circleci has been following our company in everything we do. We based all our workflow around CI, there have been downtimes, there have been small technical issues to overcome - but in general, circleci has took a huge load out of our shoulders. Support has been provided by engineers, company is striving to improve it's product and doesn't stop on what they achieved. Thei CircleCI 2.0 version seems very promising already (and it's only Beta. What do you ...

I am a lead technologist in Applicaster, dealing with multiple platforms and technologies in the day

What do you like best? it is faster in comparison to others that I tried and it gives solutions form all our platforms usage - Rails. NodeJS, Android and iOS. After you get to understand the system it works very well. What do you dislike? I dislike the support. It usually takes a lot of time to get a response, and most of the times the answers are not helpful. Recommendations to others considering the product: it is a reliable system but if you are stuck and need immediate support it ...

Great CI tool with good parallelization options

What do you like best? SSH access and wide parallelization of builds are by far the best features. We use 24x parallelization on our builds and it has made a huge difference in our day to day development efforts. Their file caching system is really good as well and very fast. What do you dislike? The UI can be a bit buggy at times, especially with large parallelization. You generally have to refresh the page to see any updates. The loading of logs can take a while. Both of these are ...

Great CI Tool

What do you like best? CircleCi is a great tool for beginners, simple configuration and easy to understand. In most cases you just create your account enable test and you have it running on your next commit Great integration with Slack I have manage to get CircleCI running with several rails project and extended to use simplecov for coverage reports, rubocop for code style analysis and Docker/kubernetes deploys What do you dislike? Sometimes configuration of special needs can be ...