Developer Tools vs Retool

devtools.tr is a free toolbox of 173 web and developer tools for webmasters, developers and system administrators. Every check runs live against real servers: DNS lookup, SSL/TLS and security headers, website analyzer with PDF reports, SEO and Core Web Vitals, TTFB, CDN and compression tests, IP geolocation, WHOIS, ASN and blacklist checks. Developer utilities include a JSON formatter and validator, regex tester, Base64, UUID, SQL/HTML/CSS/JS formatters and minifiers. Results come as clear reports with scores and ready-to-paste fixes for Apache, nginx and Cloudflare. No sign-up, no limits, fully in English and Turkish, and works on mobile.

Retool is the leading platform for building internal tools, founded in 2017 in San Francisco by David Hsu and backed by Y Combinator. Developers drag components such as tables, forms, charts and modals onto a canvas, connect them to databases and APIs with SQL and JavaScript, and ship admin panels, dashboards and operations consoles in hours instead of weeks.

The product has grown beyond app building. Retool Workflows runs scheduled and event-driven automations, Retool Mobile builds native internal apps for field and warehouse staff, Retool Database provides a hosted Postgres, and AI components and Retool Agents bring LLMs into tools and processes. Connectors cover Postgres, MySQL, Snowflake, BigQuery, MongoDB, REST, GraphQL, Stripe, Salesforce and many more. The free plan supports up to five users. Paid plans distinguish standard users who build from end users who only use apps, which keeps costs reasonable for broad internal audiences, self-hosting is available on every plan, and Enterprise adds SSO, SCIM and Git source control.

Retool fits engineering and operations teams at startups and enterprises that need many internal tools quickly. Per-user costs add up for large organizations, very complex apps hit the limits of the model, and real logic still requires SQL and JavaScript skills. Appsmith, Budibase and ToolJet are open-source alternatives that can be self-hosted cheaply, while Glide and Softr suit non-technical builders. Retool wins on polish, component depth and ecosystem.