While I really admire, and often use no-code/low-code tools, it's hard for me to see a clear and sizeable target audience.
Often, it's some sort of variation of a very technically-savvy intra/entrepreneur that has limited dev resources, there aren't many like that.
Coders usually stay away from these kind of solutions because they're often not as flexible as writing code, and force you to work in a method that has to also fit less-technical users.
I was using Zapier a ton and I loved it, but I'm a jack of trades entrepreneur, getting other people on my team to use it was much harder.
For coders that would stay away because of those limitations, we built Windmill (https://github.com/windmill-labs/windmill) as an OSS low-code builder allowing you to define flows (sequence of scripts essentially) made out of arbitrary code in Deno or Python. You can use it as a self-hosted AWS Lambda if you need to but can gradually leverage all the convenience of low-code builders when you feel ready to, and start reusing modules made by the community on https://hub.windmill.dev . You can see it as an open-source alternative to Pipedream which is very different from what Tooljet is doing. So hoping I am not hijacking too much the post as the tools have very different scope and are more complementary than competing.