Implementing Domain-Driven Design - Vaughn Vernon. Also a canonical book presenting a top-down approach to understanding Domain-Driven Design. Also known as the "Red Book."
Domain-Driven Design Distilled - Vaughn Vernon. Title says it all. Very good starter book before you read Implementing Domain-Driven Design or Domain Driven Design: Tackling the Complexity at the Heart of Software.
Living Documentation by Design, with Domain-Driven Design - Cyrille Martraire. "Discover how a Living Documentation can help you in all aspects of your projects, from the business goals to the business domain knowledge, architecture and design, processes and deployment, even if you hate writing documentation."
CQRS Journey. Microsoft Patterns and Practices. Exploring CQRS and Event Sourcing.
Domain Driven Design Quickly - InfoQ Mini Books. "Domain Driven Design Quickly is a short, quick-readable summary and introduction to the fundamentals of DDD"
Domain-Driven Design in PHP - Carlos Buenosvinos, Christian Soronellas and Keyvan Akbary. "Real examples written in PHP showcasing DDD Architectural Styles, Tactical Design, and Bounded Context Integration"
Training Courses
Domain Language eLearning - Eric Evans. "Using our video lessons with Eric Evans, author of the original book on Domain-Driven Design (DDD), teach yourself techniques for evolving practical models that improve your software — not just your documents.""
Greg Young's CQRS Class - Greg Young. These videos include the entirety of Greg Young's DDD, CQRS, and Event Sourcing class
Domain-Driven Design Fundamentals - Steve Smith and Julie Lerman. "Teaches the fundamentals of Domain-Driven Design (DDD) through a demonstration of customer interactions and a complex demo application, along with advice from Eric Evans"
Domain-Driven Design in Practice - Vladimir Khorikov. "A descriptive, in-depth walk-through for applying Domain-Driven Design principles in practice.""
Modern Software Architecture: Domain Models, CQRS, and Event Sourcing - Dino Esposito. "This course covers DDD analysis patterns helpful in discovering the top-level architecture of a business domain. Architects and developers will find details of implementation patterns such as Domain Model, CQRS, and Event Sourcing.""
Video Collections
DDD Europe - Recordings of talks given at DDD Europe
SkillsCasts by SkillsMatter - Searching DDD returns various talks given by Greg Young, Alberto Brandolini, and Dan North, etc.
Greg Young (YouTube) - A YouTube collection of various talks given by Greg Young
Mailing Lists and Forums
DDD/CQRS Google Group - An active mailing list and an excellent resource to ask questions and learn fine-grained details about DDD/CQRS.
Domain Driven Design Yahoo Group - "This group is for discussion of the domain-driven style of designing software, and the book by Eric Evans, Domain-Driven Design: Tackling Complexity in the Heart of Business Software. Questions and discussion of the book content is welcome here, as well as sharing of experiences applying DDD, and discussions of the topic in general."
DDDinPHP Google Group - "The place to discuss Domain-Driven Design, CQRS, Event Sourcing, Model Storming, Hexagonal Architecture, Distributed Systems, Reactive... in the context of PHP."
EventStormers Google+ Community - "a public discussion group for everybody interested in EventStorming, and related themes."
DDD Weekly - Weekly curated links related to DDD/CQRS/ES.
DDD/CQRS/ES Slack - A slack team for those who want to chat about Domain-Driven Design, CQRS, Event Sourcing and sometimes random things. Main channel is language and framework agnostic.
Example of Domain-Driven Design in F# - Scott Wlaschin. Example of Domain Driven Design for the game of checkers. There are two files: a scratch file with a series of designs, and a final version.
Akka CQRS ES Demo - Miel Donkers. Demo project to implement the CQRS and Event Sourcing patterns in Scala-Akka
Libraries and Frameworks
Event Store - "The open-source, functional database with Complex Event Processing in JavaScript."
Axon Framework - "The axon framework is focused on making life easier for developers that want to create a java application based on the CQRS principles"
NEventStore - "a persistence library used to abstract different storage implementations when using event sourcing as storage mechanism."
Projac - Yves Reynhout. "Projac is a set of projection libraries that allow you to write projections targetting various backing stores."
Streamstone - Yevhen Bobrov. Event Store for Azure Table Storage
Value - Thomas Pierrain. "help you to easily implement Value Types in your C# projects without making errors nor polluting your domain logic with boiler-plate code"