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50 Awesome Open Source Apps You've Never Heard Of

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Experts estimate that the number of open source apps available doubles every fourteen months. Sourceforge alone has more than 260,000 projects, and with so many open source apps now available from so many different repositories, it can be hard to keep up.
For this list, we've highlighted some newer open source tools you might have missed. We also included some gems from obscure categories, like Mandelbulbs, gene sequencing, and knitting, to name just a few. Other open source tools on the list are good projects that are overshadowed by older, better-known projects, and at least one is an old favorite that has a new name.

We hope you enjoy our list of open source apps you've (probably) never heard of. And if you've heard of some awesome apps that we haven't, feel free to offer suggestions in the comments section below.


1. Turnkey Linux

First launched in 2008, Turnkey provides pre-configured virtual appliances based on open source applications. Their most recent offering is a backup and migration appliance, and they also offer LAMP stack, Drupal, Joomla, WordPress, File server, Ruby on Rails, and dozens of other appliances. Operating System: Linux.

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