Operational Transformation library?

Question

I\'m looking for a library that would allow me to synchronize text in real-time between multiple users (ala Google Docs).

I\'ve stumbled upon Operational Transformat

Answer 1

Also check out these Javascript Libraries:

• https://github.com/vitotafuni/JSOTTEST < Client-side Javascript Implementation
• https://github.com/fitzgen/operational-transformation-example < Node JS Client/Server Implementation

Answer 2

https://github.com/opencoweb/coweb

Answer 3

You could talk to the guys at Cedanet. Though Ceda is closed source and no free trial is available on their web site. I have been involved in the development of Ceda and continue to work with it in commercial projects, so I might be able to provide some feedback/advice if you head down this path.

Answer 4

I have written a small unixy (do one thing and do it well) library that implements an OT control layer, allowing you to plug in different OT types (supports all shareJS compliant types). It's similar to shareJS but less opinionated and more abstract.

https://github.com/marcelklehr/gulf

Answer 5

Turnkey, or "drag and drop" solutions to this problem haven't really existed due to the complexity of reliably synchronizing shared mutable state. dmonad's response is a decent roundup, and I posted a more up-to-date overview of the available solutions here.

This question is quite old, but Convergence (disclaimer: I am a founder) provides the most turnkey solution out there, providing not just data synchronization but a host of other APIs useful for building out a collaborative UX. Here is an example showing exactly what you requested: synchronization of a text field across multiple clients.

Otherwise, ShareDB is a great open-source solution that fits a lot of people's needs.

Answer 6

One of the ex-Wave engineers has released a Coffeescript implementation of its collaborative editing algorithm called ShareJS, now named ShareDB.