Tungle.me
Tungle was acquired by RIM last month, which can sync with Gmail and Google Calendar, allowing users to share work schedules and schedule data with many other users who use the calendar system like Outlook. , Entourage or Lotus Notes. If either party wants to use Tungle to synchronize the work schedule, it must be a member of Tungle. Tungle allows users who are not Tungle members to see the information for free as if everyone is sharing a calendar. Free.
Gbridge
Google Galktalk is a Google Network extension service that allows Google Apps users to sync folders, share and backup files, remotely chat and access desktops. Gbridge is also known for its ability to become a peer-to-peer virtual private network (VPN) among computer users if they log in to the same Gtalk user account. Gbridge 2.0 fully supports Google Apps accounts, making it easy to create VPNs in Google Apps. Free.
myERP.com
Online enterprise resource planning (ERP) solutions for small and medium businesses, fully integrated into Google Apps, Gmail and Calendar. This set is web-based, including components such as customer relationship management (CRM), sales, customers, projects, purchasing and warehouses. Anyone with a Google Apps account can log into myERP.com with a few clicks. Price: free version for 2 users. Premium version costs USD 29 per person per month.
RapidTASK
This application aims to simplify the project management process by allowing project managers to create a to-do list and sync it with Google Apps email contact list. RapidTASK integrates with Google Calendar and Gmail, then the project manager shares the tasks to be done so that project members know how the work is progressing. Price: free, premium version is about 5 USD / person in 1 month. For businesses is 25 USD / person for 1 month.
Manymoon
Manymoon was recently acquired by Salesforce.com . This is also a project management application, with integration with Google Apps. Using Manymoon, employees can add project information to share on Google Calendars and attach them to tasks, projects and events on Google Docs. Users can also access Manymoon in Google sites like iGoogle to create, view and complete tasks without having to log into Manymoon. Price: free unlimited users. If you want more advanced features, cost 19 USD / person in a month.