I'm looking for an e-tender system, preferred to be developed by Java technologies.
I prefer it would be open sourced but if there are some other commercial with good features I don't mind.
Brief about the systems:
For now I need it contains open tender tender's type with ability to apply invited tender type later.
Got notifications module that notifies the buyer and the supplier with the tenders updates.
For sure it must have administration module to create, edit and delete user's details.
Search and browse tender advertisements and invitations.
Register to receive notifications of new or upcoming opportunities.
Advertise request for tenders.
Send notifications to registered businesses about new opportunities.
Provide access to tender documentation and other detailed information.