CiviCRM integrates CRM functions for associations, affiliation groups and others as an add-on for the top GPL content management systems WordPress, Joomla and Drupal. We have been installing and hosting CiviCRM for several years and it has become a standard part of our toolbox. It is especially strong on event registration and membership management. CiviMail does an excellent job with bounce and subscription management, but it's not as user friendly as a service like MailChimp or Constant Contact for HTML mail composition. CiviContribute handles payments for memberships, donations and events. CiviCase brings case management into to application and CiviVolunteer helps you keep track of the eager beavers who want to help your cause. We have used CiviCRM for projects ranging from an international arts group to our son's Boy Scout troop. We have used it for camping registrations and conference registrations for thousands of users. The real gem, as in any CRM tool are the reporting tools. You can pull membership, attendance or other reports in minutes. Think of a data related question and get an answer quickly and simply.

Excellent event registration and membership management at a price that can't be equaled. Best of all, it works in and with our client's websites.

It's not an intuitive tool. You need to learn the logic of CiviCRM to get things done. It's not hard, but I wouldn't give it to a client without a few explanations and probably training.

Overall, it's done what we've needed it to do, reliably, for a long time.

We've used CiviCRM for years to handle all of our even registrations. While it may not be the slickest thing out there, it's been very capable of taking on this task.

This may or may not be a con for some, but it's been largely unchanged for years. The consistency makes it pretty easy to use, but it's probably aging a bit.

It's a tradeoff between being free and customizable and stability & security. If you just need something simple to get up and running this is probably not the best tool for you. If you need something very customizable and you have the technological knowledge to customize and maintain it or you can pay somebody to do it for you it is a nice tool. For most small companies it is probably overkill.

It's very flexible and integrates well with CMS systems (which is also a security issue). We've created multiple extensions for CiviCRM and made a lot of custom adjustments which is relatively easy to do. It's free and OpenSource and offers a lot of features. The CiviCRM volunteers/engineers I had contact with were very friendly and helpful, but given you don't pay for it you also can't expect and will not get enterprise support. It has a good API to retrieve and update data.

It's buggy. After every update there are things that break. We have a customer that has a lot of data (~1 million contacts) stored in CiviCRM and updates are always a nightmare which is why we only do it once per year. It takes me a couple of days to actually update the system and fix all of the bugs that occur during the upgrade and after the upgrade. The update takes a couple of hours and it never runs through without issues. With smaller instances the update usually works better and is done in a couple of minutes. You will need to to be a software engineer to maintain CiviCRM because you will need to be able to go into the code and analyze and fix issues yourself. I've also contributed back a fix to the CiviCRM core. There are few automated tests that catch bugs so old features get broken with updates on a regular basis without anybody noticing. That it integrates with CMSes is a nice feature but it is also a major concern. If you run it behind your website it means your customer data stored in CiviCRM can get stolen if your website is hacked. This is not an uncommon thing to happen to Wordpress and Drupal sites. Also because of the bugs as I said we avoid updating more often than once a year so we also don't get security fixes. This is why we moved our CiviCRM away from the website to a separate server that is not accessible to the internet.

The flexibility of this platform is truly amazing. You can customise it to your exact needs and the range of features is unbeaten. Most powerful CRM I have come across.

The user interface is what lets this platform down. It is not responsive and although a developer has made a mobile app, it is too late to the game and does not properly give you the power of CiviCRM in your mobile. Considering most people now will want to access these platforms from phones, this is what makes CiviCRM unfortunately not really future proof.

Very functional so long as you don't need something new

Cost -- our volunteer run organization could afford it (we pay for hosting which includes administrator and user coaching) Highly functional and generally very easy to use Very flexible with extensions that are much more advanced than found in cost-comparable products -- membership, events, etc. Very good API Ability to fully get all data out of it

Import of large quantities of data using supplied import procedures is painful at best. That said, a person who understands the database can bypass the worst of it -- however, we could do this, and the closest competing product priced itself out of our reach by an excessive import fee. While existing reports are easy to use, creating truly new ones is nearly impossible (need to create a new extension) Sadly lacking documentation on creating extensions