cloc counts blank lines, comment lines, and physical lines of source code in many programming languages.

Stack trace visualizer

These are policy-driven snapshot management and replication tools which use OpenZFS for underlying next-gen storage. (Btrfs support plans are shelved unless and until btrfs becomes reliable.)

Authentication, authorization, traceability and auditability for SSH accesses.

Hydra, the Nix-based continuous build system

Google Drive direct download of big files

Remote Virtual Desktops Manager

A script to measure and limit CPU time and memory consumption of black-box processes in Linux

Lua library for HTTP cookie manipulations for OpenResty/ngx_lua

My home Kubernetes cluster

A rule-based sysadmin tool that helps setting up complex environment for blank machines