free astronomy software, freeware or open source.
When looking for free astronomy software your best bet IMHO is open source. Open source is where the programmers leave the source code open for anyone that wants to change or modify. You don’t have to change or modify it to use it. Here is a list of some of better free astronomy software packages.
In Amateur astronomy you will hear people say this or that is the best when talking about products like astronomy software. You are going to have to try it for yourself and decide if it meets your needs.
free astronomy software
MoonPhase v2.7
Astro Info v2.1.1
IrrationalAstro
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