Intellicode

Since we have started we have used several solutions for all kind of stuff. I'll put together this list so you can check if any fits in your situation.

• Freshbooks.com: We have used freshbooks since our third invoice and its still in use. Its super simple, cheap and at the time we used it it was the only EU regulations compatible invoice software. As you might know we are forced to put up stuff like VAT number and company ID on our invoices.
• Ruby on Rails: Our preferred technology to build web applications. Doesn't need much explaination, just try it out.
• Linux: All our applications and server based infrastructure is hosted on Linux. Mainly the centos and redhat distro's.
  
• Subversion: After my first projects I couldn't think of a better solution to store my sourcecode than subversion. At the moment I use Apache with an svn mod to host and serve all our code.
• MySQL: arguably one of the best open source databases out there. I didn't have any problems with the software and I basically grew up with it, so I don't have a reason to switch.
• Nginx: All our deployed websites on our custom server run on Nginx. Based on my tests it offers the best performance for both static file serving and serving mongrel output.
• Google apps: If you want a super reliable infrastructure for mail AND a kick ass web based interface there is no better choice than google apps.
• Aptana/radrails: Our main IDE for developing rails applications. I like the features more than textmate, so I have been using this since I installed it.

Less noteworthy packages we use include Apache, Windows, openoffice and macosx. So this is basically what powers intellicode today. We are always looking for better and/or cheaper solutions so I'm curious what your companies use to power their daily activities.