Best Retool Alternatives
The best alternatives to Retool for building custom client portals with code in 2026.
Retool is the most flexible tool in this space — connect any database, any API, build any interface with 100+ components. Its free tier includes 50 external users, and the self-hosting option gives enterprises full control.
But flexibility means complexity. Retool requires developers, and per-user pricing can escalate quickly for customer-facing portals. If you need something simpler, cheaper, or open source, the alternatives below trade some flexibility for accessibility.
Budibase
Open-source platform for building internal tools and portals
Budibase is open source with free self-hosting and no user limits. If Retool's per-user pricing is a concern and you want full control over your deployment without vendor lock-in, Budibase gives you that freedom at zero cost.
Caspio
Enterprise no-code platform for database-driven portals
Caspio has 25 years of enterprise maturity with HIPAA compliance and handles massive datasets. If you need a portal for regulated industries like healthcare or finance with proven compliance certifications, Caspio's track record is unmatched.
Knack
Build online databases and portals without code
Knack includes a built-in relational database with visual builder — no external database needed. If you want to build a portal without setting up and managing a separate database, Knack's all-in-one approach is simpler than Retool's connect-everything model.
WeWeb
Visual web app builder for production client portals — no per-user pricing
WeWeb has no per-user pricing and connects to any backend via REST API. If you're building a portal for hundreds of external users and Retool's per-seat costs would be prohibitive, WeWeb's flat pricing model scales better.
AppSheet
Google's no-code platform for building apps from spreadsheets
AppSheet costs $5/user/month and integrates natively with Google Workspace. If your team already uses Google Sheets and needs a quick portal without Retool's developer-oriented complexity, AppSheet is cheaper and faster to deploy.