I've done a huge amount of work on Godot2 [1] (nodejs Riemann port) this past couple weeks, updating it to modern Streams2 syntax in Node. Really lightweight and deployable on all sorts of platforms. Includes many windowing features.

I also updated the dashboard to match [2], including Riemann's query language [3].

I haven't had a chance to update the docs yet, but the tests have a ton of examples [4]. Reactors are just Transform streams now so it's possible to use any duplex/transform stream in the pipeline. Docs coming ASAP.

[1]: https://github.com/nextorigin/godot2

[2]: https://github.com/nextorigin/godot2-dash

[3]: https://github.com/nextorigin/riemann-query-parser

[4]: https://github.com/nextorigin/godot2/tree/nextorigin/test/re...