I've heard of David, which watches the Node.js dependencies of a project and gives you a badge that you can embed on any GitHub page. Does anyone know of a similar watcher for Bower? It should also provide a similar badge.
I would have a look at an application called Gemnasium. It supports quite a few languages including Bower and Node.js. It parses your project's dependencies and notifies you when new versions are released or they need to be updated. It also provides you with badges and has a guide on how to incorporate them into your GitHub page. It has free & paid plans that you can use as well.
With Gemnasium, start reducing your technical debt today, and keep your project in shape!
There is also VersionEye. It too supports quite a few languages including Node.js and Bower. It also has dependency badges with a guide on how to incorporate them. Note that this does not have a free plan to use.
VersionEye notifies you about outdated dependencies in your software projects. Nowadays software projects are based on many open source and self developed components. Checking manually for updates for these components is a very time consuming task and not fun at all! VersionEye notifies software developers about outdated dependencies in their projects. That way they can save a lot of time and focus on development.