Agents of Value are a Philippines based outsourcing company specialising in tech based services, with some secretarial work.
Brickwork are an Indian outsourcing company. They offer two levels of service basic / premium. They've been around since 2004 and gained fame in a couple of books (World is Flat, 4 hour work week).
DoMyStuff.com is an online outsourcing site where you post jobs and people bid on them. Like RentaCoder.com but for any type of task.
GetFriday are an outsourcing company starting from $15/hour on a pay-as-you go model. Drops down to $10/hr for 20hrs/mth or as low as $7/hr for 160hrs/mth. Time and a half at the weekends.
Hire staff on a monthly basis starting from $400/mth part time or $700/mth full time.
AskSunday are a quick task outsourcing company. They offer plans including a number of "tasks" which typically take 20 minutes each to complete. Starts from $17/mth for about 10 tasks. They have project based plans "Sunday Projects", price on request.
Support Resort offer outsourcing services to India / Philippines. You can hire an individual programmer / admin assistant / etc on a part time, full time, or 24/7 team basis. Rates start from around $400 a month with a setup fee. 24/7 tech support $2k/mth
Globe Task is a virtual outsourcing company. Rates start at $12 per hour for pay as you go and drop to $8/hour for 40 hours / month.
VirtualEmployee help you to recruit offshore staff and provide a location for them to work from. Real people, real jobs. Starting from $700 / month.
Webgrity is an outsourcing company. I think they do lots of work on elance and other freelancer sites.
An outsourcing company that will work on one-off or ongoing projects. No rates on their site. They're busy, may be a delay responding to requests.