We are not competing…

I think people ask us this question because they perceive us as competing with Pidgin/Adium/[insert the name of your favorite open source IM client]. But there’s no good answer to that question, because we are not competing, here is why:

• we share values. We believe that instant messaging technologies should be freely accessible and open: people should not be locked in closed systems.
• we share a technology stand point: we think that to empower people to increasingly use the open IM technologies that we like, we need to offer people a tool that makes it easy to access both promising open technologies and legacy networks.
• we share code. Instantbird, like Adium, relies on libpurple, which is at the heart of Pidgin, to connect to legacy networks. We take this code, but we also give back: several changes made to libpurple to improve its reliability in Instantbird are now part of Pidgin. We are working together, and Instantbird developers are definitely part of the Pidgin developer community.

… but we offer an alternative

I can easily understand why people think we compete though, as we do provide an alternative. I assume people who ask the previously mentioned question actually wanted the answer to another question: How is Instantbird different from Pidgin? Now, this is a question we can answer!

I will actually provide several different answers: the first will satisfy technically oriented people, the others should be understandable by everybody. Most of my points compares Instantbird to Pidgin, but are still applicable when comparing Instantbird to other IM clients.

Technical differences

The biggest technical difference between Pidgin and Instantbird is that Pidgin uses GTK+ and Instantbird uses the Mozilla XUL platform to display its user interface.

The Mozilla platform has advantages compared to GTK+:

• The Mozilla platform is well known for its awesome extensibility. Add-ons can modify almost anything that is part of the Instantbird user interface, and the skills required to build add-ons are similar to the skills required to create a website, as the technologies are basically the same: HTML, CSS, JavaScript, XML, … Instantbird add-ons are easy to install, some can even be installed without restarting the application! (To be fair, Pidgin also supports plugins, but writing them in C requires much more programming knowledge and to compile them for each platform. Pidgin also has Python (via D-Bus) and Perl scripting APIs, but I’m not sure they are actually usable on Windows.)
• While a GTK+ user interface is native on some Linux desktop operating systems (typically those based on Gnome or XFCE), a XUL user interface also acts native on Windows (we even included some Aero Glass effects for Windows 7) and Mac OS X where GTK may not fit as well.
• Thanks to the Mozilla accessibility effort, the XUL platform is very accessible and we have received a lot of enthusiastic feedback from users of assistive technologies who love Instantbird.

Developing on top of Mozilla also has some (perceived) downsides:

• We need to ship the whole Mozilla toolkit, which makes us package megabytes of compiled code we didn’t write. This means for example that the Instantbird installer for Windows weights 9.9MB. Some people (especially some Miranda fans) seem to think this is huge, but while I like to find ways to reduce the size of the installer we ship, I tend to think at this point it is mostly a non-issue. Just for comparison, the Pidgin installer weights 9.5MB without GTK, and 32.4MB with all its dependencies included.
• The Mozilla platform has the reputation of using more resources than other browsers/toolkits. The good news is, some bright people are currently making a huge effort to reduce the memory usage, so this will be mitigated in future releases. Plus the situation is not as bad as some people pretend it to be: the memory usage measurements we see in comments about Instantbird aren’t that scary, some people start to complain when an application uses 40MB of memory. Hey come on, we are in 2011, new machines have been shipping with gigabytes of memory for years already…
• I heard from some Linux packagers that the Mozilla build system is not easy to work with for them. While there may be some pain points here, it doesn’t really affect the end user.

We make Instantbird for you!

Some developers make their programs the best for themselves and share it with you, for free. These programs are the result of people’s hard work which they offer you as a gift, and so these people deserve respect for that! Unfortunately, it is not unusual that if somehow the product doesn’t work out for you, it’s your problem, not theirs, and you are free: to fix it, to report the issue and hope someone will fix it, or to look for a greener pasture. Your comments are valued if they help developers make their program better for everybody, for example if it helps fixing bugs that lots of people suffer from. Your opinions and wishes may not be taken into account, however, unless you intend to actually start working on them: patches are welcome, not additional work (people are busy already).

We work to make Instantbird the best for you. We look forward to gathering your feedback and acting upon it to make Instantbird even better, for you. We assume that when someone takes the trouble to come and talk with us to complain about something, there’s a valid concern. Even when it’s well hidden behind factually inexact assertions that we can’t agree with. If people cannot express themselves clearly, there’s a reason why they are confused, and if a confusion is common, we should find its cause and fix it.

As this difference may be a bit theoretical, I’m going to give a concrete example in the next point: the way we deal with stability issues.

Stability

Changing

We keep seeing comments of people (who have not actually tried Instantbird) who think we should go improve Pidgin instead of “wasting time” on Instantbird.

In the page of our website where we explain why we create Instantbird, we conclude:

It’s time to bring back innovation!

To do this, we need to be able to change things easily. As Instantbird is still a young project, we can change fast.

Pidgin on the other hand is already a mature project with policies about when it’s acceptable to change APIs or when they are frozen: it’s basically impossible to change an API in Pidgin until a new major version is released (so after the Pidgin 2.0.0 release, the API changes have to wait until Pidgin 3.0.0 comes out to be included: currently Pidgin 2.0.0 was released over four years ago!). This is a good thing to ensure the plugins stay compatible, but it slows down the changes to the application.

Different feature sets

This is my last point even though most people would expect to see it first. Instantbird and Pidgin have different feature sets.

On one hand, Pidgin has some features that Instantbird doesn’t have. Some that we will have in the future. Some that we don’t want to have. I’m not going to give a full list here because I don’t actually have a list of all Pidgin features to compare and check what we have and what we don’t have. We are neither trying to copy Pidgin nor to directly compete against it, so such a list would be irrelevant anyway.

On the other hand, Instantbird has some features that Pidgin doesn’t have (message themes, automatic updates, inline search, …) and even some unique features (for two examples, see my blog posts introducing Time Bubbles and Magic copy).

Conclusion

So, should you switch to Instantbird? If I were you, I would. But I’m not you. Deciding which IM client you use is your choice, based on your taste, your needs, your feelings. It’s your decision, really!

If you like what you currently have and see nothing you like in what Instantbird offers, just keep using what you like.

If you love Instantbird, then, obviously you should use it.

If you are in the middle and like Instantbird but for some reason can’t use it because something you really need is missing or doesn’t work, please tell us about it, we are eager to receive your feedback! And maybe there’s already an add-on to customize Instantbird to do what you wanted that we can point you to.

In any case, we are not going to try to force you to switch from Pidgin or whatever IM client you may be using right now to Instantbird. We respect your freedom, we respect your choices, we love you!