SpaceRealm is an online resource for exploring and tracking space launches, presenting launch information in a calendar-style list. Its database spans recorded missions from the early history of rocketry to planned future flights, with views for live, upcoming, and past launches. Visitors can browse missions by launch date, mission name, and the organization or company associated with the flight.

The listings feature a wide range of participants, including national space agencies, commercial launch providers, research organizations, and military operators. Missions include crewed and uncrewed flights, satellite deployments, science and technology demonstrations, and exploration programs. SpaceRealm also provides navigation to related sections covering launch sites, launch vehicles, spacecraft, companies, and updates, making it a broad directory for spaceflight activity as well as a launch calendar.

The site notes that live information may require a page reload to display new data and offers information about its live-data feature. Overall, SpaceRealm helps space enthusiasts follow launch schedules and discover missions across the global space sector