dejal.info

What It Is

Dejal Systems, LLC is a small independent macOS and iOS software developer with roots dating back to 1991, currently based in Washington State, USA. Its product lineup includes Time Out, Simon, Weather Events, Preminder, Pack, Date Stamp, and others. The product closest to an enterprise software use case is Simon, a flexible server monitoring tool for Mac.

Core Capabilities

Simon covers a fairly wide range of monitoring scenarios, including web page change or outage detection, Ping, DNS, RSS, FTP, IMAP/POP/SMTP mail services, SNMP device status, SSH, TCP port scanning, disk capacity and S.M.A.R.T. status, local application checks, and more. It also includes a filter system for text matching, regex searches, numeric change detection, link checking, and overriding result status. Notification options include email, iMessage, web GET/POST, sounds, speech, launching apps, mounting volumes, and APC Masterswitch control. Simon 5 supports iCloud sync, allowing users to view and edit checks across multiple Macs and designate specific Macs to run checks and send notifications.

Pricing and Trial

A new Simon 5 license costs $99, with upgrades priced at $49. Dejal says all of its products include a fully functional free trial, and Mac software purchased from the Dejal Store comes with a 60-day no-questions-asked money-back guarantee. Payments are processed by PayPal and FastSpring, with online credit card payments supported.

Pros and Cons

Its strengths are the broad range of monitoring types, scriptable extensibility, and suitability for Mac-savvy technical users who need lightweight monitoring. The one-time purchase model and refund policy are also clear, and free support is provided directly by the developer. The limitations are that it is not a cloud-based SaaS monitoring platform and lacks enterprise-level features such as multi-user roles and permissions, auditing, SLAs, compliance certifications, and integrations with modern incident collaboration platforms. Its ecosystem is also clearly Apple-centric.

Who It’s For and Access from China

It is suitable for individual site owners, Mac users, small technical teams, or scenarios where monitoring tasks need to run locally on a Mac. It is less suitable for organizations that require a centralized cloud console, cross-platform agents, on-call escalation, and enterprise compliance. The source text does not specify access conditions from mainland China, and the availability of PayPal/FastSpring payments should be verified in practice. Alternatives to consider include UptimeRobot, Pingdom, Better Stack, Zabbix, and Nagios; in China, it can be compared with Alibaba Cloud CloudMonitor and Tencent Cloud Observability Platform.