Core

• sbt The interactive build tool. Use Scala to define your tasks. Then run them in parallel from the shell.
• Scala standard library

Documentation

• Scala Guides and Overviews

Tests

• With ScalaTest, you can test either Scala or Java code. By offering deep integration with tools such as JUnit, TestNG, Ant, Maven, sbt, ScalaCheck, JMock, EasyMock, Mockito, ScalaMock, Selenium, Eclipse, NetBeans, and IntelliJ, ScalaTest makes it easy to take your testing to a higher, more productive level in new or existing Scala or Java projects.

Libraries

• json4s/json4s A single AST to be used by other scala json libraries http://json4s.org
• Rovak/ScalaWebscraper Scala Webscraper
• ruippeixotog/scala-scraper A Scala library for scraping content from HTML pages
• jboner/scala-dataflow Oz-style dataflow (single-assignment) variables and streams for Scala http://jonasboner.com
• scopt/scopt simple scala command line options parsing
• lloydmeta/metascraper Scala library for scraping metadata from specified URLs (e.g. OpenGraph)
• The High Velocity Web Framework For Java and Scala

Blogs

• This website, alvinalexander.com, was created by Alvin J. Alexander way back in 1998. The original plan was to open it up to all sorts of writers, create forums, and all sorts of other things, but alas, other things like economics kicked in. (I had to get a real job, and founded (and then sold) Mission Data.) Author of books: Scala Cookbook, How I sold My Business, A Survival Guide for New Consultants

Articles

• A Universal Document Scraper in Scala
• Various ways to run Scala code
• Creating Command Line Applications Using sbt
• Scala Tutorial – objects, classes, inheritance, traits, Lists with multiple related types, apply