EnigmaAstrology2. You can also use it in other software, such as your word processor or presentation software.
The font not only contains a large number of astrological symbols but also the usual letters and numbers. You can type your text in this font and use astrological symbols without having to switch fonts.
You can use the font for free. If you write astrological programs, you can also use this font provided your own software is open source.
You can download the font here and a comprehensive manual.
An earlier version of this font is still available. This version only contains astrological symbols, but far fewer than in the new version. This older version also doesn’t contain standard letters and numbers, so you need to switch fonts to use a symbol. The old version can also be used in your own software, even if it’s not open source. A zip file with a manual and the font is available.