Roundcube - Web-based IMAP email client
FileInvite - Stop chasing your clients for documents! Easily request files, documents, forms & signatures from your clients – set a due date and save hours as your requests are returned to you effortlessly.
Horde - Horde Groupware is a free, enterprise ready, browser based collaboration suite.
iDeals Virtual Data Room - iDeals Virtual Data Room is a tool that provides secure access to large amount of confidential documents and can view, analyze and collaborate in a protected environment.
Rainloop - RainLoop is a web based email client.
Clinked - White-label Client and Team Workspace