vsPERPLEXITY
numbat
Free, open-source local agent-activity monitor
SENTINEL · COMPARISONS
Agent monitoring is a real, fast-moving category. Here’s how Sentinel stacks up against the closest tools — including the free ones — without pretending they don’t exist.
Sentinel is a v1 prototype. Some of these tools already ship features Sentinel doesn’t have yet, like blocking. We’d rather say that plainly than oversell what’s live today. Join the waitlist or read the launch post for the full picture.
Free, open-source local agent-activity monitor
Enterprise agent activity monitoring with blocking, deployed via MDM
Enterprise vibe-coding and agent security, with skill discovery and blocking