Cron Expression Parser - Validate, Explain, Next Run Times

Cron Expression Parser & Next Runs

hipersoft/cron-next-runs

Validate cron expressions, explain them in plain English, and compute the next N run times in any timezone. Sanity-check schedules across many jobs at once.

Cron Expression Validator & Next-Run Calculator

comall-agency/cron-expression-tool

Validate standard 5-field cron expressions, get a plain-English description of each schedule, and compute the next run times in UTC (1 to 20 per expression). Supports *, lists, ranges and steps. An invalid expression is reported in its own row, not as a batch error.

Validate cron expressions and compute next run times via a simple HTTP API.

Cron Expression Parser and Next Run Times

mangudai/cron-expression-parser

Parse cron expressions and get the next scheduled run times with a plain-English description. Give one or more standard cron strings and get a clean table of upcoming runs, weekdays, and validity. Offline, no API key.

🔥 7-DAY LAUNCH SPRINT (May 1–8, 2026): First 100 runs free for new users. Parse and validate cron expressions with human-readable explanations. Calculate next run times, generate expressions from natural language, and access common presets. Supports standard and extended cron syntax.

Cron Expression Builder & Validator

perryay/cron-expression-builder-validator

Parse, validate, and explain cron scheduling expressions with syntax validation, next-execution calculation, human-readable descriptions, batch validation (100+ expressions), and full schedule auditing with overlap and gap detection. Ideal for DevOps, SRE, and platform engineering teams.

SPF Record Checker - Validate SPF & Count DNS Lookups

eliai/spf-record-checker

Validate SPF for up to 200 domains per run: parsed mechanisms, DNS lookup count vs the RFC 7208 limit of 10, all-qualifier and plain-English issues. $0.0008 per domain, no start fee, failures never charged — cheaper than measured incumbents ($0.001+/item). For deliverability and security audits.

DMARC Record Checker - Fetch, Parse & Grade DMARC Policy

eliai/dmarc-record-checker

Check DMARC for up to 200 domains per run: policy, pct, rua/ruf reports, grade (enforced/monitor/missing) and plain-English issues. $0.0008 per domain, no start fee, failures never charged — cheaper than measured incumbents ($0.001-$0.05/domain). For security audits, deliverability and lead gen.

Robots Rule Tester - Would Google Crawl This URL?

eliai/robots-rule-tester

Test URLs against robots.txt with real Google semantics: longest-match, Allow wins ties, UA group selection (test Googlebot, GPTBot, ClaudeBot...), wildcards. Verdict + the exact rule that decided it + sitemaps. $0.0008 per URL, invalid URLs never charged — vs $0.001-$0.15 measured incumbents.