An anonymous reader writes: I am a biomedical researcher interested in having general-purpose, scientific programs developed and released as open source. Interface design and reusability of the code are of primary importance to me. For my purpose, Cocoa applications relying on Core Data seem to be the best way to get the job done quickly. While I have some programming experience, I have few connections to the industrial world. So my question to Slashdot readers is: how do I find someone (individual or business) to write high-quality programs? Are there reputable contractors experienced in Cocoa? What sort of rates should I expect, to use as a starting point in negotiations? Would a requirement that programs are released as open source make it more or less difficult to find someone to do the job?