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Leaps is a service for collaboratively editing your local files over a web UI, using operational transforms to ensure zero-collision synchronization across any number of editing clients.

Simply navigate to a directory you want to share, run leaps, open the hosted page (default http://localhost:8080) in your browser and direct any friends on your LAN to the same page. You can now collaboratively edit any documents in that directory.

Your files will be written to in the background as you edit. If you aren't using version control, or simply want extra protection, you can run leaps in safe mode with the --safe flag. In safe mode any changes you make will be placed in a .leaps_cot.json file, which you can then apply to your files once you are happy by running with the --commit flag.

When writing code it sucks to have to leave the editor for running tests, linters or builds. However, allowing the internet to run arbitrary commands on the host machine is a recipe for disaster.

Instead, leaps allows you to specify pre-written commands using the -cmd flag, which are then available for clients to trigger asynchronously while they edit. Results are broadcast to all connected users, so you can all see the outcome as a team.

For example, leaps -cmd "golint ./..." -cmd "go build ./cmd/leaps" gives users both a linter and a build command that they can trigger on your machine.

Leaps can also be used as a library, with implementations of accessors for various document hosting solutions and plugable authentication layers, allowing you to build your own services to suit many service architectures.

Leaps server components are implemented in Golang, and has a client implemented in JavaScript that can currently be used with ACE, CodeMirror and Textarea editors.

To read more about the service library components and find examples check out the godocs.

To read about the JavaScript client check out the README.

Leaps is a single binary, with no runtime dependencies. Just download a package for your OS from the latest releases page.

brew install leaps
leaps -h

go get github.com/Jeffail/leaps/cmd/...
leaps -h

Leaps uses [dep][https://github.com/golang/dep] for managing its dependencies. To obtain the correct versions of all dependencies use:

dep ensure

Contributions are very welcome, just fork and submit a pull request.

Ashley Jeffs

• Web: http://jeffail.uk
• Twitter: @Jeffail