VPT
MadMapper
QLab
Resolume
HeavyM
MapMap
Pure Data
Freej
CronPro.dev
crontab guru
Cronitor
Cronhub
Cronly
Dead Man's Snitch
Healthchecks.io
CronPro is a cron expression builder, validator, and explainer that speaks 8 dialects โ Unix/POSIX, Vixie, GitHub Actions, Kubernetes, AWS EventBridge, Azure Functions, Quartz, and Spring.
Build & validate โ compose expressions field by field with instant validation and a plain-English explanation of what will run and when.
Convert between dialects โ the converter translates expressions between schedulers, including day-of-week renumbering (Quartz numbers Sunday as 1, Unix as 0), and flags when a conversion is lossy instead of silently guessing.
Dialect reference โ per-dialect syntax pages document the differences that bite in production: day-of-month/day-of-week OR-semantics, alias support, seconds vs. year fields, and where the ? token is required.
Free core; paid tiers add API access and team features.
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CronPro.dev's answer:
CronPro treats cron as eight dialects, not one. Most tools parse a single Unix-style syntax; CronPro validates against the specific rules of Unix/POSIX, Vixie, GitHub Actions, Kubernetes, AWS EventBridge, Azure Functions, Quartz, and Spring - and its converter translates expressions between them, flagging lossy conversions (like day-of-week renumbering) instead of silently guessing.
CronPro.dev's answer:
Most cron tools do one of two things: explain a single Unix expression, or monitor jobs already running in production (Cronitor, Cronhub, Healthchecks). CronPro sits before that step - it is where you write, validate, and port the expression itself. If your schedules only ever live in one system, a single-dialect explainer may be enough. The moment you move an expression between systems - a crontab to a Kubernetes CronJob, a Quartz trigger to EventBridge - dialect-aware validation and conversion is the difference between a correct schedule and one that silently fires on the wrong day.
CronPro.dev's answer:
Developers, DevOps, and SRE engineers who maintain scheduled jobs across more than one system - Unix crontabs, GitHub Actions schedules, Kubernetes CronJobs, AWS EventBridge rules, Azure Functions timers, and Quartz or Spring applications. If you have ever ported a schedule between two of those and had it fire on the wrong day, you are the audience.
CronPro.dev's answer:
It started with a familiar incident pattern: a cron expression ported between two schedulers that parses fine in both and then fires on the wrong day - Quartz numbers Sunday as 1 where Unix uses 0, and neither system warns you. CronPro grew out of collecting those dialect differences into one place: a builder that validates against the dialect you actually deploy to, a converter that renumbers correctly and flags what will not translate, and per-dialect syntax references for the gotchas that only show up in production.
CronPro.dev's answer:
CronPro is a Next.js (React + TypeScript) web app styled with Tailwind CSS and deployed on Vercel. All cron parsing, validation, and dialect conversion run entirely client-side in the browser - expressions never leave your machine. The account layer (saved expressions, teams) is backed by Neon serverless Postgres with Drizzle ORM; payments run on Stripe and transactional email on Resend.
Based on our record, VPT seems to be more popular. It has been mentiond 2 times since March 2021. We are tracking product recommendations and mentions on various public social media platforms and blogs. They can help you identify which product is more popular and what people think of it.
Video projection tool can do that for free. https://hcgilje.wordpress.com/vpt/. Source: almost 5 years ago
VPT8 might be what you're looking for. Source: about 5 years ago
MadMapper - The Mapping Software
crontab guru - The quick and simple editor for cron schedule expressions by Cronitor
QLab - QLab, Live show control for Mac OS X.
Cronitor - Monitor cron jobs, micro-services, daemons and almost anything else, no setup required. Easier cron troubleshooting and no more silent failures.
Resolume - Resolume is an application for live video performances.
Cronhub - Cronhub helps you to easily monitor all your cron jobs in a beautiful dashboard. It alerts you when your cron job doesn't run on time or it fails.
