What Watch is a comprehensive astrology software with a wide range of features for quick access to pertinent information. It includes diverse techniques that help astrologers in various areas, making it a powerful tool for astrology enthusiasts.

What Watch has a wide range of features, including drawing and printing chart wheels, such as synastry and composite, tables of essential dignities, element, and quality balances, and an option for analysing birth aspects using a 'harmonic aspectarian.' The software is also an excellent tool for experienced astrologers who want to follow closely transit, progression and solar arc cycles, including transits on composite charts.
The program creates ephemeris lists for any given combination of planets, providing dates for the transit itself, stations, and sign changes. Furthermore, advanced modules include search and analysis for groups of charts, an interactive map for relocation and maps similar to Astro*Carto*Graphy. The software also comes with a built-in tutorial explaining all the features as well as has an atlas and time zone conversion option.
What Watch uses Swiss Ephemeris for calculations, and the objects available include the Luminaries, the planets Mercury to Neptune, Pluto, the centaurs Chiron, Pholus, Nessus, and Asbolus, the asteroid Ceres, the planetoids Quaoar and Sedna, the Moon's nodes and Lilith. Additionally, the software is capable of sharing data with other astrology programs using the Astrological Exchange Format AAF.
In conclusion, What Watch is an excellent astrology software, available for free under the GNU General Public License v3. If you're an astrologer looking for a reliable and efficient tool to enhance your practice, this software is worth giving a try.
Version 4.0.100.1: Complete overhaul of the User Interface | New Geography module based on OpenStreetMap | Atlas files are now downloaded on request from within What Watch | Improved handling of moon transits over natal planets | Available for Windows and MacOS