Roger Meier's Forums

Keyspan:
http://www.tripplite.com/support/USA19HS

Prolific
http://www.prolific.com.tw/US/ShowProdu ... =0041-0041

FTDI:
http://www.ftdichip.com/Drivers/VCP.htm

Silabs:
https://www.silabs.com/products/develop ... cp-drivers

Microchip MCP2200/MCP2221 (look for download link under 'Documentation'):
http://www.microchip.com/wwwproducts/en/MCP2200

CH340/CH341:
Mac: http://www.wch.cn/download/CH341SER_MAC_ZIP.html
Win: http://www.wch.cn/download/CH341SER_ZIP.html
Linux: http://www.wch.cn/download/CH341SER_LINUX_ZIP.html
Additional Info: http://kiguino.moos.io/2014/12/31/how-t ... emite.html

For folks experiencing issues getting pl2303 based adapters to work on OS X Lion or later, here is an open-source driver that might work:

http://www.xbsd.nl/2011/07/pl2303-seria ... -lion.html