Open Flash/EEPROM/EPROM Writers?

Karim Yaghmour asks: "Flash/EEPROM programmers tend to be expensive (especially if you want support for many devices). I am trying to find a Flash/EEPROM programmer for which the schematics and software are available in Open Source form on the web. The projects I have found are rather basic and do not provide support for a wide range of memory devices. Does anyone have any recommendations? Is anyone working on such an Open Source project? Something like the Bitscope project (an 'Open Source' Oscilloscope) mentioned earlier on Slashdot, but for device programmers. If not, is anyone interested in starting such a project?"