10 databases, C# OS, etc

podcast interview Different Databases with David Simons @ .NET Rocks!

MongoDB 

Eloquera 

Voldemort 

Apache HBase 

Neo4j 

OrientDB 

"power of a Distributed Graph Database engine
with the flexibility of a Document Database all in one product."

ArangoDB 

Apache Marmotta 

Apache Marmotta is an Open Platform for Linked Data.

• RDF triple store with transactions, versioning and rule-base reasoning
• LDP, SPARQL and LDPath query

TempoIQ 

PostgreSQL

Cosmos OS CosmosOS/Cosmos @ GitHub

"Cosmos is an operating system "construction kit", built from the ground up around the IL2CPU compiler in C# and our home-brewed language called X#."

Rescuing the Tiny OS in C# - Scott Hanselman

Lambda Architecture

ElasticSearch on GitHub 

Hadoop