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There are many code examples for iPhone development, most of the examples found in books or on blogs are incomplete and only designed to illustrate a specific point.  The difference with the open source iphone apps shown on this page is that they are all available in the app store so you can see what other developers are really doing.

– Update March 7 – reMail and RobotFindsKitten added

The Apps

Here they are listed in alphabetical order (name linked to app homepage when possible):

1. ABC 123 – Sequence memorization game. Utilizes Cocos2D. (itunes link) (source code)

2. Colloquy – Conversion of the most popular Mac IRC client to the iPhone. (itunes link) (source code)

3. Diceshaker - Dice rolling simulator designed for role-playing game enthusiasts. (itunes link) (source code)

4. Doom Classic - Classic 3D first person shooter. (itunes link) (source code) (build instructions)

5. Freshbooks – App that enables usage of Freshbooks web invoicing software from your iPhone. (itunes link) (source code)

6. Gorillas – Classic Worms/iShoot turn based shooter type game converted to iPhone from basic. Utilizes Cocos2D. (itunes link) (source code)

7. Last.fm – Software that enables usage of the Last.fm platform for personal radio stations. (itunes link) (source code)

8. Mobilesynth - A monophonic synthesizer designed for live performance. (itunes link) (source code)

9. Molecules – Allows you to view 3D models of molecules and manipulate them through touch. (itunes link) (source code)

10. Mover – Allows you to transfer stuff from one iPhone to another by “flicking” it to the other device. (itunes link) (source code)

11. Natsulion - A basic twitter client converted from mac. (itunes link) (source code)

12. NowPlaying – Allows you to check local theater listings, and check rotten tomato ratings. (itunes link) (source code)

13. Packlog – Backpack journal client. (itunes link) (source code)

14. PocketFlix – Find movies, and manage your Netflix information. (itunes link) (source code)

14. reMail – E-mail client featuring ultra-fast search.  Removed from app store, but source made available. (source code)

14. RobotFindsKitten – Port of a very silly “classic” ASCII game. (itunes link) (source code)

15. Sci-15 HPCalc – Calculator app based on classic scientific HP-Calculator. (itunes link) (source code)

16. Task Coach – Personal to-do list and task manager. (itunes link) (source code)

17. Tubestatus – London train schedule tracker. (itunes link) (source code)

18. Tweejump – Platform jumping game inspired by Icy Tower. Utilizes Cocos2D. (itunes link) (source code)

19.  Tweetero – Basic twitter client with image uploading. (itunes link) (source code)

20. Twitterfon – Super-fast intuitive twitter client. (itunes link) (source code)

21. Wikihow – A reader app for the popular how to wiki site. (itunes link) (available by e-mail from support@wikihow.com)

22. WordPress – Client for managing WordPress blogs. (itunes link) (source code)

23. YourRights – Pocket database containing a summary of your legal rights. (itunes link) (source code)

Check them out if you’re working on something similar or think they might have a feature you could use there’s no reason to re-invent the wheel.  Be sure to make sure you understand the licenses though many are GPL and require that you open source your app.

Please Share

Please share this list either by tweeting, or sharing using one of the buttons below.  Also, if you know of an app store app that has been open sourced and is not shown below please post about it in the comments.

Please post any thoughts below, Thanks.

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