1. SBaGen

    SBaGen

    Created by Jim Peters, SBaGen established sequenced, timed audio described as text.

  2. SBaGen+

    SBaGen+

    Ruan's direct fork maintained the original engine on modern systems and added isochronic tones.

  3. New design

    SynapSeq 2.x

    SPSQ was part of the first SynapSeq release, 2.0.0. The 2.x series shifted toward a simpler, render-first architecture.

  4. New implementation

    SynapSeq 3.x

    Rewritten from scratch in Go, it no longer depended on SBaGen or SBaGen+ code.

  5. Independent engine

    SynapSeq 4.x

    The independent engine and SPSQ reached a more mature foundation.