Fulcro 2.0 is a library for building data-driven full-stack applications for the web. It uses React, is written in Clojure and Clojurescript (so it has first-class functional abilities with immutable data) which leads to a very clean synchronous story for the UI. The result is a stack that dramatically reduces the amount of boilerplate and incidental complexity in your software.
Fulcro 1.0 is still supported but is only getting bug fix releases at this point. Version 1.0 was an add-on library for Om Next. Fulcro 2.0 no longer has a dependency on Om Next, though the surface API is still very similar. See README-fulcro-2.0.adoc for porting instructions and the reasoning behind the change.
Latest version on Clojars:
Latest Release: 
NOTE: If you are using Java 9, you may need to include "--add-modules java.xml.bind" to your JVM.
The website is a great place to read about Fulcro. It has pages describing things in more general terms, and has links to various resources like videos and evaluation guides.
If you want to jump and code, read on!
See GettingStarted.adoc to get going. It covers all of the basics related to full-stack development in Fulcro.
There is a lein template, which emits a bare-bones full-stack app with dev, testing,
uberjar, i18n, and devcards support.
lein new fulcro my-projectIf you don’t know Clojure, you should at least get comfortable with the basics. I recommend: Clojure for the Brave and True, and doing at least the basic online exercises at 4Clojure. You should also have a passing familiarity with Facebook’s React, though if you understand that we’re using it to get "fast UI updates", that is sufficient to start.
The Developer’s Guide is really an interactive coding tutorial using Devcards. You can view an online version, but in order to use it properly you should clone Fulcro and:
./run-devguide.shand follow the instructions.
There are a number of demos that show how particular common things are done with Fulcro. To view them:
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Use git to clone this repository
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Use the
run-demos.shshell script at the top of the project and follow the instructions it gives.
This compiles the demos, and runs a server that can respond to the full-stack examples.
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Note
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A number of things might use the network port of the demo server, so don’t try to do this while also doing something else in the project. |
Fulcro is maintained by Fulcrologic, LLC. The primary architect and maintainer is Tony Kay.
Fulcro expands on the work of David Nolen’s Om Next, and that code represents about 30% of 2.0’s code base. Much of the core API is similar, but this library is intended to be an easier-to-use alternative that follows the original simplicity of design while eliminating some experimental features of that library, and rounding out the story with a complete concrete implementation that is easy to use.
Many people have contributed to this library. Much of the original internal work was part of Om Next and as written by David Nolen. Some of the contributions of Antonio Monteiro have also been incorporated.
Fulcro itself originated as an effort of Navis in Bend, Oregon. Tony Kay was the primary architect, and numerous people contributed in that original project (known as Untangled).
Fulcro can therefore be considered a fork of Untangled and Om Next.
See the github statistics for information on all contributors.
We have an active and very helpful community on Slack. Please join us!
Get an invite from here:
Follow the instructions to get into Slack, and find us in the #fulcro channel.
Source code obtained from Om Next is:
Copyright © 2013-2017 David Nolen
Licensed under the Eclipse Public License.
Fulcro is:
Copyright (c) 2017, Fulcrologic, LLC The MIT License (MIT)
Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.