List of all Java APIs (JSR's)
Entry to W3C web standards
RCF Editor (Official Internet Protocol Standards)
NetBeans
Maven
JavaDB, Derby
QUnit
Git Tutorial
HTML vs XHTML vs Polyglot HTML
HTML5 Compliant tutorial
HTML5 Compliant tag reference
HTML5 (CSS,JS) Presentation from Google
HTML5 Flowchart (what to use when...)
CSS 3 tutorial/references (further down)
JavaScript (core) reference
JQuery API
QUnit (JavaScript testing)
HTML Landscape Overview (JS API's)
ECMA (JavaScript) specification
JavaScript Design Patterns
JavaScript API Demos (HTML5)
JavaScript in Detail, "this"
Gotchas
Different types of managed beans
CDI reference (Weld)
Bean Validation reference
Metro (JAXB implementation)
JAXB annotations
Jersey (JAX-RS implementation) User Guide
Article: Designing REST (HATEOAS)
JSF Home (Mojarra)
Nice overview article, JSF, CDI, ...
JSF tag reference
ICEFaces
ICEFaces ACE components
PrimeFaces
Full version CRUD demo (also database), JSF PrimeFaces.
JPA Reference
JPA JPQL Reference
JPA CriteriaAPI reference
Long-polling, Comet, etc. explained
Why asynchronous processing is the new foundation of Web 2.0
ICEFaces push (PushRender API)
Asynchronous Servlets
Server Sent Events Specification
Atmosphere (Comet, Web sockets, Server sent events,...)