Build and debug regular expressions with live matching, an explanation panel that decodes every token, and a searchable reference. Supports PCRE, JavaScript, Python, and more flavors.
Listed Jul 1, 2026
More in Developer
Point any plain HTML form at it and submissions arrive in your email — with attachments, logs, exports, spam controls, and API access. The free plan is the real production setup, so you can test before paying.
Simulate your architecture on AWS, GCP, Azure, OCI, or DigitalOcean and forecast cost, performance, and resilience — without provisioning a single real resource. Free, with an API.
Type a cron expression and see it translated into plain English, with the next scheduled runs. The fastest way to double-check that '0 4 * * 2' means what you think it means.