helpful tools

Agent Ransack: Win; comprehensive, parallel search in folders

Beyond compare: Win, macOS, Linux; compare the content of two folders

SmartGit: Win, macOS, Linux; best UI for Git

synergy: Win, macOS, Linux; share mouse/keyboard between computers via network

Sysinternals: Win, especially the “procexp64” is helpful to analyze ressource-usage and for finding open file-handles