Ever since I compiled the original Open Source iPhone Applications post on this blog, I’ve kept an Evernote folder specifically for new open source apps. The list is long and I’ve simply selected some of my favourites and put them into a tidy list. I’d love to hear what sort of Open Source apps you use for your iPhone or Android smart phone. Please let me know via the comment section below and I’ll update the post with your suggestions and/or save them for ‘Part 3′.

Mobilesynth

Mobilesynth is an open source classic monophonic synthesizer, designed for live performance. Developers are encouraged to visit the website and contribute.
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Frotz

Frotz lets you play hundreds of free works of Interactive Fiction (a.k.a. text adventure games) on your iPhone or iPod Touch. It includes several built-in games, and includes a web portal for downloading new ones.
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LED Strobe Flashlight

Using the iPhone 4′s great and powerful LED technology, you are able to turn your iPhone into a LED flashlight, strobe light and a screen flashlight. Allows the screen to be a flashlight as well by using several different colours.
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Simple RSS Reader

A Simple RSS reader for iPhone using PureMVC Standard for Objective-C licensed under the Mozilla Public License 1.1.
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Task Coach

Task Coach is a simple open source todo manager to keep track of personal tasks and todo lists. It grew out of a frustration that most task managers do not provide facilities for composite tasks. Often, tasks and other things todo consist of several activities.
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Tweetee

Tweetee is a cute Twitter client for iPhone released under the new BSD License.
 
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Plain Note

Plain Note allows you to create, edit and delete notes using the standard iPhone user interface. You can sort notes by date and make use of the in app mailing system.
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Doom Classic

Relive the First Person Shooter that defined a generation with DOOM for iPhone. As a space marine stationed on the planet Mars, you are all that stands between the armies of Hell and their invasion of planet Earth!
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Colloquy

Colloquy brings the popular IRC client for the Mac into the palm of your hand with this mobile version. Built on the Chat Core framework, Colloquy Mobile is a full featured client optimized for the on-the-go experience.
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Phone Monkey

Books.app is a simple eBook reader for the iPhone. It reads HTML and text files stored in your ~/Media/EBooks folder, and is smart enough to enter subdirectories, if for instance, you’ve broken a book down by chapters.
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Phone Gap

PhoneGap is an HTML5 app platform that allows you to author native applications with web technologies and get access to APIs and app stores. PhoneGap leverages well-known web technologies such as HTML and JavaScript.
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