| Usage | Name | Link |
|---|---|---|
| crontab schedule tester | Cronitor crontab guru | https://crontab.guru |
| JSON tester | JQ Play | http://jqplay.org/ |
| Regex tester | Regular Expressions 101 | https://regex101.com/ |
| Usage | Name | Link |
|---|---|---|
| Bash shell | ShellCheck | http://www.shellcheck.net/ |
| Usage | Name | Link |
|---|---|---|
| Free online network tools | CentralOps | https://centralops.net/ |
| Handy Tools for Developers | IT-Tools | https://it-tools.tech/ |
| Usage | Name | Link |
|---|---|---|
| Google one-time passwords | Google App Passwords | https://myaccount.google.com/apppasswords |
| Google password checker | Google Password Manager | https://passwords.google.com/ |
| Stolen password checker | ';--Have I Been Pwned? | https://haveibeenpwned.com/ |
| Password strength test | UIC Password strength test | https://www.uic.edu/apps/strong-password |
| Password strength estimator | 'zxcvbn' strength estimator | https://lowe.github.io/tryzxcvbn |