This question reads like HN market research and not genuine curiosity
Go look at what dagger provides over those technologies as a basis for advanced agent env capabilities. I use it for more than just sandboxing with my agent
I would also point out sandboxing is just one feature, that is approaching required status, for an agentic framework and unlikely to be an independent product or solution
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What was the first concrete thing you needed that existing sandboxing tools (Docker/VMs/bwrap) just didn't provide?
This question reads like HN market research and not genuine curiosity
Go look at what dagger provides over those technologies as a basis for advanced agent env capabilities. I use it for more than just sandboxing with my agent
I would also point out sandboxing is just one feature, that is approaching required status, for an agentic framework and unlikely to be an independent product or solution