WPS Office, Office Online, Trio Office, NeoOffice, Joeffice, SSuite Office, IBM Docs, Corel WordPerfect, Arcane Office, Polaris Office, Apple iWork, Calligra Suite, Ashampoo Office, EuroOffice, Collabora Online, OfficeWork Office Online, Live Documents, Truly Office, Ability Office, Coffice, Oxygen Office, Novus Office, Conholdate.Total for Java, Zoho Workplace, Office Reader are some alternatives to Collabora Office.