Photo credit: Ivan Stevanovic

1. Global IP Video: Free Flash-based video conferencing tool allows you to have video conferences with people
2. TheOpenDoc: Create and edit text documents online, and share them with other people
3. TeamWork Live: Project collaboration tool enables you to manage projects, assign tasks and share files
4. Nexo: Free web-based collaboration service lets you share files, pictures and videos online

1. Global IP Video
   
   Global IP Video is an easy-to-use Flash-based video conferencing tool that you can use to have video calls with people without having to install anything on your machine. To start a video conference, you just have to type a name for your room, share it with your friends, and click connect. It is completely web-based and free to use with no registration needed.
   http://www.globalipvideo.com/





2. TheOpenDoc
   
   TheOpenDoc is a web-based collaboration tool that can be used for creating, editing and sharing any kind of information. It allows you to create and upload an unlimited number of text documents and to grant access to any person of your workspace to edit and create content. Free to use.
   http://www.theopendoc.com/





3. TeamWork Live
   
   TeamWork Live is an online project collaboration tool that allows you to manage projects, track tasks, centralize communication, share documents and files, collaborate with clients and remote teams. Storage size and project number changes basing on the plans, that you can check by clicking here. The free account offers 1 project with only 1MB of space.
   http://www.teamworklive.com/





4. Nexo
   
   Nexo is a free web-based collaboration service that allows groups to collaborate online. You can create groups of people, with who you can share files, pictures, videos, interactive calendars, assign tasks, create polls and more. It is 100% web-based and free to use.
   http://www.nexo.com/