Firepad!

Google Docs is an online word processor, part of Google Drive , that lets you create and format text documents and collaborate with other people in real time. Here's what you can do with Google Docs:

CryptPad is a suite of zero knowledge, realtime collaborative editors and applications. Encryption carried out in your web browser protects the data from the server, the cloud, and the NSA. The secret encryption key is stored in the URL fragment identifier which is never sent to the server but is available to javascript so by sharing the URL, you give authorization to others who want to participate.

Real-time collaborative text-editor. No account required. Edits highlighted in authors color. Infinite undo history. Copy of the down EtherPad.

An online word processor that lets you create and edit documents in your web browser and save them in the cloud, so that you can share them with anyone. Zoho can allow multiple users to work on a document simultaneously. Import Microsoft Word (DOC), OpenOffice text (ODT & SXW), HTML, RTF, JPG, GIF PNG files.

Store and edit documents in the cloud without sacrificing your privacy

HackMD is a browser-based, real-time collaborative markdown editor. It was inspired by hackpad but focuses more on speed and flexibility.

Fidus Writer is an online collaborative LaTeX editor especially made for academics who need to use citations and/or formulas. The editor focuses on the content rather than the layout, so that with the same text, you can later on publish it in multiple ways: On a website, as a printed book, or as an ebook. In each case, you can choose from a number of layouts that are adequate for the medium of choice.

Real-time collaborative text-editor. No account required. Edits highlighted in authors color. Infinite undo history. Syntax highlighting for editing code. Copy of Etherpad

Folia is the professional way to share documents for feedback and discussion. Stop printing, avoid lengthy email threads, modernize meetings, and more. Our state of the art annotation and commenting tools enable deep conversations, so you can be more effective with your content.

DBook is a online service and solution to write large documents in a structured, collaborative and secure way.

Collaborative text editor with syntax highlighting that lets you work with a team on the same document over a network.

Etherpad is a highly customizable open source online editor providing collaborative editing in real-time.