perch vs Coro

Coro and Perch share almost no functional surface, so the useful question is what each actually covers in its own domain. Coro bundles six protection areas behind one dashboard, one endpoint agent and one AI data engine: EDR with activity logging and anomaly analysis, Email Protection, Cloud App Security, ZTNA/VPN network protection, Data Protection with user data governance, MDM, security awareness training with phishing simulations, Secure Web Gateway with DNS-level and wifi phishing protection, inbound email gateway and secure messages, plus cloud backup with immutable backups via the Keepit partnership. The headline claim is that it automatically remediates over 95% of threats. That's a consolidation play — fewer vendors, fewer alert queues, less analyst time.

Perch is a CLI linter you point at a source tree. perch scan finds defects and security issues; perch.yaml holds your own rules, authored with perch rules add and described in plain language via --ensure. Scope control is granular: --each method or --each file, --where "src/**/*.ts", --filter rule=<name>, and perch check <file>::<method> --rules <name> to test one symbol. It catches things like off-by-one loop errors, MD5-hashed tokens and unhandled nulls, and reports rule ID, file:line, severity, confidence percentage and enclosing method — scoring probabilistically (91%, 78%) instead of pass/fail. perch scan --since origin/main limits a run to changed files, exit code 3 fails CI, and findings stay local in .perch.

One is an operations platform with an endpoint agent; the other is a developer tool with an npm install. No feature overlap to weigh.

Perch is free — install it globally with npm install -g @lakeday/perch and run scans without a checkout. There's no hosted dashboard, multi-user policy management or org-wide analytics in the feature set, which is consistent with that pricing. The real cost is the time to author rules in perch.yaml: nothing catches your project's behavior until you write the guarantee. Teams running scans over sensitive source should also weigh the fact that analysis involves sending relevant code to a third-party service.

Coro doesn't publish a price. The listed buying path is a partner-issued, per-environment quote rather than self-serve online checkout — which the vendor's own "not for" list confirms. That's normal for a platform sold through MSPs and resellers, and it means you can't sanity-check the budget from this page. You'll be pricing a bundle that spans six security domains plus mobile device management, security awareness training, secure web gateway and Keepit-backed cloud backup, so the number will move with environment size, agent count and which modules you take. If you need a figure before a call, get it from a partner who can quote your seat and device footprint; comparisons against point tools are only meaningful once you know which modules you're actually replacing.