Who uses Upwork? CompanyWebsiteCompany SizeTerraCycle Inc.terracycle.com500-1000Zendesk Inczendesk.com1000-5000Blackfriars Groupblackfriarsgroup.com10-50Search Engine Optimization, Inc.seoinc.com50-200Companies using Upwork and its marketshare – Enlyft enlyft.com › tech › products › upwork