Bootstrap CLJS is a wrapper around React Bootstrap, inspired by, and in fact largely implemented using om-tools. This means that you can use React Bootstrap components using the same syntax as you'd use with om-tools.dom, giving you the following benefits, as directly quoted from their README file:

om-tools.dom mirrors the om.dom namespace while using macros and minimal runtime overhead to make the following improvements:

• Element attributes are not required to be JavaScript values and are optional. You don't need to use the #js reader macro or nil for no attributes.
• More natural attribute names. We translate attributes like :class to :className and :on-click to :onClick to stay consistent with Clojure naming conventions.
• Children can be in collections. You don't need to use apply if you have a sequence of children or use concat for combining sequences of siblings.

Example by comparison:

(ns example
  (:require [om.dom :as dom :include-macros true]))

(apply dom/div #js {}
  (map #(js/ReactBootstrap.Button #js {:bsStyle %} (str/capitalize %))
       ["default" "primary" "success" "info" "warning" "danger"]))

vs.

(ns example
  (:require [om-tools.dom :as dom :include-macros true]
            [bootstrap-cljs :as bs :include-macros true]))

(dom/div
  (map #(bs/button {:bs-style %} (str/capitalize %))
       ["default" "primary" "success" "info" "warning" "danger"]))

The project comes with examples translated from React Bootstrap Components page via a very cool project called Devcards. To see the examples in action run lein figwheel and navigate your browser to http://localhost:3449/#!/bootstrap_cljs.devcards . If everything went as planned you should see a page that looks something like this:

Open the file /devcards_src/bootstrap_cljs/devcards.cljs in your favorite editor and start playing around. Everytime you save the file the changes get compiled and served via figwheel, and your browser window should get automatically refreshed so you can see your changes practically in real time.

There's also om-bootstrap. The key differences are:

• bootstrap-cljs (this one right here!) is just a wrapper for React Bootstrap. om-bootstrap on the other hand has re-written the React Bootstrap components in ClojureScript, which allows it to take advantage of some performance optimizations that come with using immutable data structures.
• Because om-bootstrap does more work to translate the React Bootstrap components to ClojureScript, there are still a few components missing. No doubt they will be added in time though, as the project is actively developed.
• The syntax between the two is slightly different. Both allow you to pass in regular Clojure maps to specify the props of a component, but bootstrap-cljs is more similar to om-tools in that you can also omit it the map entirely if it's not needed.

Distributed under the Eclipse Public License either version 1.0 or (at your option) any later version.