Cloud and infrastructure tools for real work.
VM sizing, pricing, Kubernetes, Linux, networking, storage, and licensing tools in one place.
Start with the strongest current tools
These are the main live entry points into the platform right now.
Hyper-V Capacity Planning Calculator
Host sizing, VM planning, and infrastructure estimation for Hyper-V environments.
chmod Permission Calculator
Convert chmod values between numeric and symbolic notation with a practical Linux permission breakdown.
umask Permission Calculator
Calculate resulting file and directory permissions from a Linux umask value.
Azure VM Price Compare
Compare Azure VM pay-as-you-go and reserved pricing scenarios using practical runtime and instance-count assumptions.
Azure VM Size Finder
Find Azure VM sizes based on practical workload requirements.
Reserved vs On-Demand
Compare monthly, annual, and full-term cost for reserved versus on-demand pricing under practical workload usage assumptions.
Explore active tool clusters
Jump into the strongest live categories without digging through the full catalog first.
Cloud Tools
VM sizing, pricing, reserved-versus-on-demand comparisons, and practical cloud planning helpers.
3 live tools
Explore categoryContainers / Kubernetes
Kubernetes sizing, pod density, and request-versus-limit planning utilities.
3 live tools
Explore categoryLinux / UNIX
Permissions, cron, systemd, tar, and practical Linux administration helpers.
6 live tools
Explore categoryVirtualization
Capacity planning and infrastructure decisions for virtualization environments.
1 live tool
Explore categoryCost / Licensing
Licensing and cost estimation workflows for infrastructure and platform choices.
1 live tool
Explore categoryNetwork Tools
CIDR, subnetting, IP ranges, and MTU/MSS calculations for network planning.
4 live tools
Explore categoryBuilt for use, not for filler.
cld2day is built around practical utilities that solve infrastructure and engineering tasks quickly, without padding the page with generic content.
Depth first, then expansion.
The next layer focuses on stronger cloud tooling, deeper licensing and resilience workflows, and compact operational helpers for web, email, and security.