workerd
No written verdict yet. Here is what commenters said.
Why people recommend it
“People really do run it in production without using Cloudflare at all”
“I guess workerd addressed that”
Show 3 more
“But workerd can be used directly without wrangler, and is production-capable”
“that's probably more optimal for agent sessions.”
“You can definitely run workerd in production on your own machines”
Caveats and dissent
“Somehow I don't believe that Cloudflare doubling down on their own runtime -workerd”
“>> WARNING: workerd is not a hardened sandbox”
Show 2 more
“here's the workerd one https://github.com/cloudflare/workerd?tab=readme-ov-file#warning-workerd-is-not-a-hardened-sandbox”
“There is a big "WARNING: This is a beta. Work in progress" message in https://github.com/cloudflare/workerd”
Often compared with
From the makers not counted in the ranking
“workerd has also had granular sandboxing all along”
“create one first-class open source self-hostable runtime for Workers and Durable Objects”
“I would accept a PR to increase the constant to 1M”
“workerd stand-alone is designed to work well at small-medium scale.”
“Durable Objects are fully supported by workerd”
“It runs on top of our open source runtime.”
Threads where it came up
- Cloudflare OS: an open platform for agents, apps, and work 6 mentions
- Cloudflare acquires Deno 5 mentions
- Head in the Zed Cloud 4 mentions
- OpenWorkers: Self-Hosted Cloudflare Workers in Rust 3 mentions
- JavaScript engines zoo – Compare every JavaScript engine 2 mentions
- PBKDF2 has a 100k-iteration ceiling in Cloudflare Workers 1 mention
Data: workerd.json. Quotes are verbatim; the verdict and theme labels are written by a model from these comments, and every clause links to its sources.
All comments 24
“People really do run it in production without using Cloudflare at all”
“Somehow I don't believe that Cloudflare doubling down on their own runtime -workerd”
“letting the Deno team focus on making workerd self-hosting easier”
“I guess workerd addressed that”
“what is the difference between celld and Cloudflare Workers open source version workerd?”
“But workerd can be used directly without wrangler, and is production-capable”
“which are open sourced”
“It runs on the open source Workers Runtime”
“that's probably more optimal for agent sessions.”
“You can definitely run workerd in production on your own machines”
“Workers runtime is open source and permissively licensed fwiw”
“My go-to solution is to make ad-hoc proxies with workerd that work just the way i need”
“willswire/union is a Kubernetes Helm chart for self-hosting cloudflare/workerd”
“>> WARNING: workerd is not a hardened sandbox”
Right - I trust workerd in the context of Cloudflare because I know it has a team of people who's job it is to keep it secure who are on-call 24/7. The problem I have is that I'm just one person and I don't want to be on call 24/7 ready to react to sandbox escapes, so I'm hoping I can find a solution that someone else built where they are willing to say "this is safe: you can feed in a string of untrusted JavaScript
“here's the workerd one https://github.com/cloudflare/workerd?tab=readme-ov-file#warning-workerd-is-not-a-hardened-sandbox”
“There is a big "WARNING: This is a beta. Work in progress" message in https://github.com/cloudflare/workerd”
“the Cloudflare Workers runtime is already open source”
“Any notable differences between the respective runtimes themselves?”
“you can probably also self host workerd itself which is open source”
“so there is secret sauce that is not part of workerd”
“It doesn't have the same security properties.”
“Cloudflare provides an open source version of their Workers runtime”
“The Cloudflare Workers runtime is open source: https://github.com/cloudflare/workerd”