The 1.321 version of Observation Manager for Mac is available as a free download on our website. This free software for Mac OS X is a product of Dirk Lehmann. The application relates to Education Tools.
From the developer:
Observation Manager is a free and open logbook for (amateur-) astronomical observations. It's written in pure Java and runs on every platform supporting Java 1.4 or higher. All logbook entries made in Observation Manager are stored in the free and open OpenAstronomyLog XML Schema.
Log your observations and make sure next time you're searching for a celestial object you can take benefit of your past observations.
You may want to check out more Mac applications, such as Soccer Manager 2015, MeD's Movie Manager or Home Loan Manager Pro, which might be similar to Observation Manager.