The Simple Seestar Controller, also known as Seestar_alp, is a standalone controller application written by Kai Yung and co-conspirators. It provides advanced control and automation capabilities for SeeStar telescopes[1][4]—details at the SSC wiki. Summary below.

Control Options - Functions as a companion app alongside the regular Seestar app or as a standalone controller[2] - Supports multiple simultaneous device connections through a proxy system[2] - Cross-platform compatibility (Windows, Mac, Linux, Raspberry Pi)[2]

Interface & Integration - Provides a web-based GUI interface for telescope control[3] - Implements ASCOM/ALPACA specifications for telescope control[2] - Enables integration with astronomy software like Stellarium[2] - Allows control of multiple Seestar telescopes simultaneously[8]

Advanced Capabilities - Live view functionality for real-time image streaming[7] - Scheduling and night planning features[3] - Access to hidden features like gain and other settings control[2] - Plate solving capabilities using the telescope's built-in solver[2]

Installation Options - Available as a standalone package for simple installation - Can be run from source code for advanced users - Special Raspberry Pi implementation available[6]

The software is open-source, allowing users to add custom features and modify the code according to their needs[2].

One major advantage to SSC is it lets you operate in EQ (equatorial) mode which means you have far fewer rejects. In al/az mode I usually would have 30-40% rejects. Recently it's been about 1%. A recent all-night run captured 2259 subs and rejected just 25!

SSC also features a bubble level instead of green balls for leveling. A recent update (2.4.0) added a way to refine polar alignment down to a gnat's ass and now includes a useful planning function.

Citations:
[1] https://www.unofficialseestar.wiki/doku.php?id=faqs
[2] https://www.youtube.com/watch?v=V2N9xSJhC20
[3] https://www.youtube.com/watch?v=MM_WDUUcKdE
[4] https://github.com/smart-underworld/seestar_alp
[5] https://www.youtube.com/watch?v=KipyTFPds00
[6] https://www.youtube.com/watch?v=DoCsGYKzDFE
[7] https://bbs.zwoastro.com/u/starnet/likes
[8] https://www.youtube.com/watch?v=8ms9CGxm__0