Do you mean 3commas? If so, they are famous and have a long history, but make sure you do not use the CMC API, as it sometimes leads to losses, and at the very least, your personal data will be leaked^[1], so I do not advise you to do so.

I haven't heard of Corninx so it's best to avoid it.
There are many options, open source or closed source, such as Gunbot https://www.gunbot.com/

[1] 3Commas API Keys Leak Detailed Analysis