Aladin Lite is a lightweight version of the Aladin tool, running in the browser and geared towards simple visualization of a sky region. It allows visualization of image surveys (JPEG multi-resolution HEALPix all-sky surveys) and permits superimposing tabular (VOTable) and footprints (STC-S) data. Aladin Lite is powered by HTML5 canvas technology and is easily embeddable on any web page and can also be controlled through a Javacript API.

MOCPy creates, parses, and manipulates Multi-Order Coverage (MOC) maps. MOC is an IVOA standard enabling description of arbitrary sky regions. Based on the HEALPix sky tessellation, it maps regions on the sky into hierarchically grouped predefined cells. MOCPy provides the MOC, TimeMOC, FrequencyMOC, and STMOC classes to handle the manipulation of spatial, temporal, frequency, and space-time MOCs respectively.