The 3 most important points are :

1) Simpel in use, yet fully and great in performance.

2) Always a perfectly working upgrade.

3) Stable. Once it runs, it doen't stop.

An example of how OpenSource should be, you are never forced on something you don't need or want. Review collected by and hosted on G2.com.

That must be the most difficult question. Can't really say there is something. If there was something, but it's minor, then I would say Themes. More available for all to use, or adding a setting option for just changing colors etc... Review collected by and hosted on G2.com.

Piwik is a great alternative to Google Analytics if you need something to run on your own servers. It also helps to analyze traffic more closely by turning on features to track ip addresses. This allows for closer analysis of activity on your website.

I am most impressed by Piwiks price (free), the ability to easily install and upgrade and the ability to customize it for specific purposes. There are multiple ways to gather stats from javascript on web pages to images on the pages.

Piwik is very easy to install on most web server rental sites. It works very well with any of the cloud services like AWS. Review collected by and hosted on G2.com.

The documentation on how to write plugins for Piwik are lacking. It used to be difficult to have it analyze log files but that has been corrected in recent releases. Review collected by and hosted on G2.com.

Multiple sites can be easily configured and tracked in one central dashboard.

There is more than one way to track the site visits - javascript is not necessary (but is of course the easiest way to track)

With the new version 2.0, various reports can be 'widgetized' and embedded in other web pages that are not necessarily part of the main Piwik domain (i.e. you can embed live reports in a client's intranet) Review collected by and hosted on G2.com.

Initial setup is simple, but you'll need to know something about your server environment.

Importing raw data from server logs is not trivial, and takes a bit of work to get right. Review collected by and hosted on G2.com.

It's easy to install, use and update!

It's completly open source and the project is very active: there is new features really often, Review collected by and hosted on G2.com.

Is dislike the lack of insights and I would prefer a dashboard alert oriented. Review collected by and hosted on G2.com.

Clean design, easy to install, upgrade and use. Great open source user community behind product. Review collected by and hosted on G2.com.

The install is a little heavy at nearly 40MB.

Product is still not that well known so clients and users may need to get up a learning curve. Review collected by and hosted on G2.com.

Pages and Page Titles reporting provide actionable insights. Using those one can know which pages have high traffic but also high bounce rates. So, those would need content optimization, to increase engagement. The Real-time Map feature is also useful in tracking visitors by geo location. This helps in improving product availability during key holiday periods, when every transaction counts. Dashboard and Overview reporting provides quick snapshot of site performance in terms of traffic, engagement, loyalty and pathing. Operating System, Visitor Browser and Browser Plugins gave an indepth understanding of visitor profile, so site design could be made more responsive based on device resolution and browser type. Review collected by and hosted on G2.com.

Category traffic and conversion reports need custom implementation. No this year to last year metrics comparison feature available. Date Range, Site Search and report export features are not very robust. This results in additional manual efforts, to make reporting more actionable. Review collected by and hosted on G2.com.

- Free!

- Open source

- Numerous features

- Community knowledge base

- Privacy matters!

- Piwik Mobile App: easy and smooth to use (I used iOS). Review collected by and hosted on G2.com.

From my point of view Piwik:

- Could be more customizable

- Other than that contains no serious drawbacks

- May only be OK for tech savvy people. I had to install or assist in Piwik installation for projects run and led by people without technical background. Some more approachable and entry-level tutorials and explanations could be beneficial for this type of users. Otherwise they will look for some other web analytics software (GA?) or will have to keep on nagging IT folks for help! Review collected by and hosted on G2.com.

Piwik has a plethora of features, and is an excellent free and open-source alternative for site analytics and reporting that lets you generate custom reports in a beautiful UI, and ensure that you own the data that you collect. Review collected by and hosted on G2.com.

Piwik's custom event tracking is lacking compared to other solutions, but the development roadmap shows that this will be improving greatly in the future. Review collected by and hosted on G2.com.

Piwik is open sourced and we can install it inside our domain. Review collected by and hosted on G2.com.

The user interface is not the best in is kind. A lot of work could be done to facilitate the navigation in the Piwik interface. Review collected by and hosted on G2.com.

Open source and free, allows you to keep business sensitive website data in your own server, and if you host it in a really fast server (SSD) it really shines. Ships with most basic features and you can customize for more. Review collected by and hosted on G2.com.

Not as much documentation as it is not as covered by third party bloggers/writters as proprietary or other widely used analytics software. Review collected by and hosted on G2.com.