Some of my projects:

1. Force.com Data Manager – Developed in Spring MVC, REST
http://cloudsole-data.herokuapp.com/

2. Force.com REST Feed
http://cloudsole-feed.herokuapp.com/

3. Force.com Swagger REST Spring MVC
https://github.com/thysmichels/force.com-swagger-rest-spring-mvc

4. Force.com Developer Web IDE:
http://cloudsole-developer.herokuapp.com/

5. Force.com Streaming API integration with Rabbit MQ and Quartz:

6. SalesIO JQuery Mobile Iphone Application
https://github.com/thysmichels/Sales-IO-JQuery-Mobile-Force.com-Mobile-App/