Wikipedia
BlueSpace Federal is an enterprise software small business serving the defense and intelligence communities, primarily in the US. BlueSpace is focused on Cross Domain Solutions, creating applications that can span multiple classified security domains. Specific examples include a Multi-Level Security (MLS) cyber situational awareness application that integrates with SolarWinds network monitoring and management software; an MLS email client that provides a user with a single inbox and calendar connected to Microsoft Exchange; an MLS search application that connects to Google Search Appliance devices on multiple networks; and an MLS C2 application that connects to a Google Earth server and shows the operator a Unified Operating Picture that is the combination of multiple Common Operational Pictures (COPs) on different networks.
Bluespace can also refer to the background on the blogging website Tumblr, and photo posts that blend into it.