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CubeSandbox

CubeSandbox gives every AI agent its own hardware-isolated MicroVM with a dedicated Linux kernel — not a shared-kernel container but a true KVM virtual machine — booting in under 60ms with less than 5MB of memory overhead per instance, enabling thousands of concurrent sandboxes on a single server via kernel sharing and Copy-on-Write memory. The Rust-built CubeProxy exposes an E2B SDK-compatible REST API on Axum, so existing E2B Cloud applications switch by changing one environment variable with zero client code changes. CubeMaster orchestrates cluster-level scheduling in Go while Cubelet manages node-local sandbox lifecycles including create, run, pause, resume, snapshot, and destroy operations. CubeVS, the eBPF-powered network layer, enforces per-sandbox isolation with LPM trie-based egress policies entirely in kernel space — no userspace context switches — while CubeEgress provides an L7 security proxy with per-domain, per-path, and per-method allowlists plus automatic credential injection that keeps secrets invisible to sandbox code. Hundred-millisecond-granularity snapshots enable checkpoint, rollback, and parallel fork from any saved state. The volume framework supports E2B-compatible pluggable storage with independent lifecycle and cross-sandbox sharing. Production deployment uses Terraform on Tencent Cloud or Helm charts on Kubernetes, K3s, or TKE, with full ARM64 support alongside x86_64 and AutoPause/AutoResume for cost optimization. Running on a dedicated VPS on RepoCloud with guaranteed CPU, RAM, and SSD, full root SSH access, and a browser serial console. Apache 2.0 licensed.

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Nanocl

One server, treated properly: Nanocl runs your containers and full virtual machines from a single declarative Statefile, reconciling what is running against what the file says, so a lone host gets cluster discipline without cluster ceremony. Containers group into Cargoes with replica counts, ordered init containers, and health-aware restarts; finite jobs run to completion and stop. When a workload needs a real kernel or a custom disk image, it boots as a QEMU virtual machine beside the containers instead of forcing a second platform. Publishing is built in: the proxy controller terminates TLS and routes HTTP and TCP traffic, and the DNS controller keeps service names resolving while workloads come and go. Secrets for registries, certificates, and environment variables attach where they are used, never inside the file itself. The daily loop is a CLI and an API: list processes, follow logs, exec into a container, watch events, and back up the entire deployment state before you change it. Namespaces keep projects apart on the same host, and Statefile arguments, templates, and sub-states carry one definition from staging to production. Running on a dedicated VPS on RepoCloud with guaranteed CPU, RAM, and SSD, full root SSH access, and a browser serial console. MIT or Apache-2.0 licensed.

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