I don't know many things about Spark, so I can't make a full comparison. I will try bellow to enumerate some advantages of Pippo: - modular [1] (spark uses a g

I don't know many things about Spark, so I can't make a full comparison. I will try bellow to enumerate some advantages of Pippo: - modular [1] (spark uses a giant static singleton architecture) - support (via modules) for many Template Engines [2] (Freemarker, Jade, Groovy, Trimou, Pebble) - support (via modules) for many Servers [3] (Jetty, Undertow, TJWS); spark depends on Jetty - directly serving of static resources [4], support for WebJar - content type negotiation - custom session [5] (support for cookie based implementation) - support (via modules) for many ContentTypeEngines [6] (Plain text, Json - Gson/Fastjson, Xml - Jaxb/Xstream, Yaml - SnakeYaml) - i18n [7] (in java or directly in template) - support (via modules) for many IoC [8] (Guice, Spring) - support metrics [9] (via modules - Ganglia, Graphite, InfluxDB, Librato) - custom (template) error pages - regex routes Unfortunately the actual documentation of Pippo it's a little bit behind of the implementation (from documentation are missing some nice concepts: named routes, finally filters, custom route context, ...) and from this reason I cannot give you more useful links but I will fix this aspect asap. Another difference in Pippo to other (micro) java web framework (spark, ninja) is that a RouteHandler it's a real endpoint (the handle method return void). You can finalize/commit the response using send, render, redirect. Everything is transparent. [1] http://www.pippo.ro/doc/modularity.html http://www.pippo.ro/doc/modularity.html [2] http://www.pippo.ro/doc/templates.html http://www.pippo.ro/doc/templates.html [3] http://www.pippo.ro/doc/server.html http://www.pippo.ro/doc/server.html [4] http://www.pippo.ro/doc/static-files.html http://www.pippo.ro/doc/static-files.html [5] http://www.pippo.ro/doc/session.html http://www.pippo.ro/doc/session.html [6] http://www.pippo.ro/doc/content-types.html http://www.pippo.ro/doc/content-types.html [7] http://www.pippo.ro/doc/internationalization.html http://www.pippo.ro/doc/internationalization.html [8] http://www.pippo.ro/mod/spring.html http://www.pippo.ro/mod/spring.html [9] http://www.pippo.ro/mod/metrics.html http://www.pippo.ro/mod/metrics.html