User and Group Identity Inspector is a desktop POSIX account directory, group membership mapper, and process capability bitmask viewer for Linux workstations and servers. An independent Linux alternative to command-line SID and account lookup tools such as PsGetSid, id, and getent, it reads host /etc/passwd, /etc/group, /etc/machine-id, and live /proc/<pid>/status records in real time.

Key Features:

• Host Account Directory (/etc/passwd): Separates human accounts (UID >= 1000), root (UID 0), and system service accounts (UID 1..999) with login shell classification, GECOS metadata, and host home directory status checks.
• Primary & Supplementary Group Mapping (/etc/group): Cross-references primary GIDs and supplementary group memberships for every user and group on the host.
• Machine Identity & Process Capability Decoder: Displays the host machine UUID alongside live /proc/<pid>/status Real/Effective/Saved UID/GID values and decodes 64-bit CapInh, CapPrm, CapEff, CapBnd, and CapAmb bitmasks into named CAP_* flags.
• Visual Distribution Charts & Reports: Renders UID range and login shell charts and exports structured account, group, and capability reports to CSV and JSON.

Disclaimer: This project is an independent open-source tool and is not affiliated with, sponsored by, or endorsed by Microsoft Corporation.