# Tristar Advanced Software > Audio software for electronic music artists, producers, and sound designers, with documentation and support. Products are described at https://tristaradvanced.com/products. The documentation is public; each page has a Markdown copy (linked below). Licenses, downloads, PDFs of the documentation and support need an account. ## Documentation - [Astrel™ Polyphonic Synthesizer documentation](https://tristaradvanced.com/docs/ASTREL.md): Astrel™ is a five-voice, analog-style polyphonic synthesizer. It has two oscillators per voice, a filter that morphs from low-pass to high-pass, two envelopes , two LFOs , a 16-slot modulation… - [Brasara™ Polyphonic Synthesizer documentation](https://tristaradvanced.com/docs/BRASARA.md): Brasara™ is an eight-voice polyphonic synthesizer in the grand style of a particular late 1970s classic. Every voice is two complete synthesizer channels, I and II, played from a panel of sliders,… - [Glossary of synthesizer terms](https://tristaradvanced.com/docs/glossary): Plain explanations of the synthesizer words the guides use, for beginners. ## Products - [Astrel™ Polyphonic Synthesizer](https://tristaradvanced.com/products/ASTREL): A small 5-Voice Analog-Style Polysynth with big sound. - [Brasara™ Polyphonic Synthesizer (closed beta)](https://tristaradvanced.com/products/BRASARA): 8-Voice, Two-Channel Polysynth for VST®3, Audio Unit and AAX (Pro Tools), and a Standalone app ## Optional - [All documentation in one file](https://tristaradvanced.com/llms-full.txt) - [Contact us](https://tristaradvanced.com/contact) - [Terms of use](https://tristaradvanced.com/terms) - [Privacy policy](https://tristaradvanced.com/privacy)