I’ll give you the straight-up list because nobody wants to read a novel when their devices aren’t talking:
Pros of Virtual Serial Port Driver (VSPD):
- Actually does what it promises—splitting, joining, creating unlimited virtual COM ports.
- Stays stable even after a Windows update (this is rarer than it should be).
- Minimal bloat, almost no learning curve, and doesn’t constantly ping the internet for “activation” nonsense.
- Flexibility: RS232, RS422, RS485, legacy compatibility—so you can use it in old-school or industrial contexts just as easily as with modern gear.
Cons:
- Not free. The trial is useful for testing but the full version costs money—think of it as paying to not punch your monitor in frustration.
- Feature set leans toward advanced users; might have extra stuff you won’t use if your needs are super basic.
- License is per-machine, so if you want this on a whole lab or network of stations, costs rack up.
Some folks here focus hard on “active dev/support” (@waldgeist), which is totally valid if you’re deploying in enterprise or don’t want sudden breakage. I agree, but with a grain of salt: there are smaller splitter utilities that are dead simple and never break because, well, they don’t do that much (“less is more” crowd, looking at you @shizuka). Not all of us need advanced logging, port bundling, or weird custom port mapping—sometimes reliability means just being basic, and that’s fine.
Here’s what I always tell people struggling with serial splitting:
- Download every trial you can. Don’t be loyal, just brute-force test with your mix of devices.
- Try to simulate disconnects, sleep/resume cycles, and port-clogged situations. Some software bounces back, some gives up and dies.
- Watch CPU/memory usage—some “light” utilities actually hog resources under stress.
Why I go with Virtual Serial Port Driver: it leaned up my workflow when I was stuck integrating new barcode readers into an old POS system (the legacy quirks are real). Set it, forget it, and it doesn’t ask questions.
Alternatives? Sure, some simple splitter tools exist, but don’t expect wild support or update cycles. VSPD isn’t perfect, but in this weird niche, nothing really is. Just prioritize stability and real-world use over pretty UIs or bells and whistles you’ll never use. Good luck!