The 11 best AI client portal buildersin 2026, from ready-made portals to ones you build yourself

Capacity turns a plain-language description into a working app: a React front end, a server and its own database, published at a capacity.studio address or on your own domain. You change it by chatting and watch each change in the preview. You choose the model (Claude Opus 5.5, Claude Sonnet 5.5, Fable 5.1, Mistral Large 4 or Kimi K3) or leave it on Auto.

Why pick Capacity

• Describe the screens and what each client should see, and Capacity builds them, with a full version history to roll back any change.
• Extensions cover the rest: login with Clerk, Auth0 or Supabase, payments with Stripe, email with Resend, Brevo or SendGrid, chat with Crisp or Intercom.
• Priced by building credits, not by client: a new client doesn't change your Capacity plan.

Watch out for

• It isn't portal software: no ready-made file sharing, e-signature or invoicing like Assembly's or SuiteDash's. You get the app you describe.
• Login isn't built in: Clerk, Auth0 and Supabase each have their own pricing, and who sees what is code in your app, to test with two client accounts before you invite anyone.
• No free plan in the web app (from $25 a month); Capacity Desktop has a free plan with one project.

Lovable builds web apps from a chat with a live preview beside it. Lovable Cloud adds the backend, with a database, user login, file storage and server functions on a Supabase foundation, and your code syncs both ways with GitHub on every plan.

Why pick it

• The chat and the preview are the whole interface, so there's little to learn.
• Because the code syncs to GitHub on every plan, including Free, a developer can review the access rules before launch.
• It also works from its own desktop app, from ChatGPT and as an MCP server.

Watch out for

• Each message uses credits, and Lovable Cloud usage is billed in credits too once its monthly grant is used.
• The rules that keep one client out of another's records are generated code: test them before launch.

Assembly, called Copilot until its rebrand, is client portal software for firms: a CRM, a branded client experience on your domain where clients message your team, share files, sign contracts and pay, and more than 30 ready-made apps for intake, onboarding, proposals, payments and project tracking. Its AI app builder changes those apps or builds new ones from a description, with sign-in, permissions and branding already handled.

Why pick it

• Sign-in, permissions and data isolation are part of the platform, not generated by AI; every app runs in its own sandbox, and Assembly is SOC 2 Type II certified.
• Hosting, storage and AI usage of your apps are included, and using an app doesn't consume build credits.
• A free plan to start: 5 active contacts, 1 internal user, 75 build credits a month and 3 apps.

Watch out for

• Plans cap active contacts (your clients) and internal users: Starter has 50 contacts and 1 user, Professional 500 contacts and 3 users, with extra users at $29 a month (yearly).
• Paid plans include 200 build credits a month, extra credits cost $0.60 each, and extra apps beyond the 5 included are $5 a month each.

SuiteDash is all-in-one business software built around a CRM and a white-label client portal. It covers onboarding, proposals, contracts and e-signature, invoicing and subscriptions, projects and tasks, file sharing, email marketing, appointments, courses and support tickets, tied together by no-code automations. Clients and staff sign in on your own domain or through a custom-branded mobile app.

Why pick it

• One price per account, not per user: unlimited staff, clients and portals on every plan.
• White label throughout: your URL, logo and colors, branded email notifications and a branded mobile app.
• Many tools in one place, from CRM and onboarding to billing, projects and HIPAA-compliant messaging.

Watch out for

• No free plan: you get a 14-day trial of Pinnacle with no card, then pick a paid plan.
• The full automation toolkit, onboarding flows, courses and support tickets need Pinnacle ($99/month), and some features are paid Power-Ups, like enforced two-factor authentication in the $40/month PLUS bundle.

Softr is an AI app builder for business operations: secure internal tools and client portals with databases, workflow automation and integrations included. You build with AI or with no-code blocks, and connect data from its own databases or tools like Airtable and Notion.

Why pick it

• Unlimited apps, databases, workflows, agents and forms even on the free plan, with an API and an MCP server.
• Granular permissions and visibility, with Google sign-in and one-time passwords for your clients.
• Over 59 integrations, including Airtable and Notion as data sources.

Watch out for

• Permissions, which a client portal depends on, start on Pro at $99 a month billed yearly, a big step from Basic at $19; two-factor authentication is on Business at $329.
• AI credits are few (5 a month free, 10 on Basic, 50 on Pro), so most building is done with no-code blocks.

Noloco calls itself the AI portal builder for teams running complex operations: one system for your team, your clients and the AI agents that help run it. You build client portals, CRMs, project trackers and dashboards with its AI, Nola, on Noloco Tables or on the Airtable and Google Sheets data you already have.

Why pick it

• Made for client portals: each client gets a branded, real-time space with as much access as they need, and no more.
• Record permissions on every plan, Free included; Build adds field permissions, a custom domain and optional two-factor login.
• Unlimited team seats on the free plan, and a 14-day trial of Build with every feature.

Watch out for

• The free plan stops at 50 active clients and 2,000 records, with Noloco Tables or a CSV import as the only data sources.
• Build includes 10 team seats, 1,000 active clients and 25,000 records; more records cost $25 for each extra 25,000.

Knack builds secure business apps and online databases without code: custom workflows, portals and internal tools on a relational database, with AI-powered app building, users and roles, and automations through Knack Flows and its API. Its MCP server lets other AI tools use Knack as a backend.

Why pick it

• Unlimited users and roles on every plan, so a portal with many clients doesn't add seat costs.
• A relational database at the core, with record change history on Pro and above.
• HIPAA and GovCloud options on Enterprise, and a separate Knack Health offer.

Watch out for

• Starter allows 3 apps and 20,000 records, and its 25 AI credits a month go quickly if you build with AI.
• There's no free plan, only a trial, and the $19 and $49 prices are for a new customer's first three months.

Tadabase AI is Tadabase's new builder: you describe the app your business needs, it asks follow-up questions, then builds the database, logins, permissions, workflows, emails, PDFs and hosting on Tadabase's platform. It generates React code you own, and Claude Code connects to it in one command. Existing customers keep their original Tadabase plans.

Why pick it

• Unlimited app users on every plan, which suits portals with many clients.
• What a portal needs is already built: database, logins, permissions, workflows, emails and PDFs.
• A free plan to start, with a one-time 300-credit welcome bonus.

Watch out for

• Starter publishes 3 apps ($9 a month for each extra one) with 25,000 records per app; external sources like Airtable or HubSpot start on Business, $250 a month.
• Always-on hosting starts on Pro.

Zite builds business apps and workflows on its own database from a description, so a team can run its operations in one place, from a prompt like "a client management app for my marketing agency", connected to the apps it already uses. Every plan, including Free, has unlimited users, apps and editors.

Why pick it

• User login on every plan, Free included, so clients sign in without a seat cost.
• Apps, workflows and a database in one product, with SOC 2 Type II listed on its pricing page.

Watch out for

• Granular permissions, roles and enforced two-factor authentication are on the Team plan, which is priced on request.
• Credits cap building (50 a month on Free, 100 on Pro, 400 on Business), and records are capped: 5,000 on Free.

Glide is an AI app builder for internal business apps: you describe the tool, and Glide builds it on its own platform with integrations and workflows, then publishes it to your team or, from Plus, to the public. You choose how hard its agent works (light, medium or heavy).

Why pick it

• Made for the internal apps teams run on, with integrations and AI features inside the apps.
• Pro adds unlimited published apps and workflows, org-level roles and building with your own agent over MCP.

Watch out for

• Its pricing page lists no custom domain, and published apps are capped below Pro: 2 on Basic, 5 on Plus.
• Pro, where the limits lift, starts at $125 a month for 5 team members.

Bubble is the long-standing visual app builder. It now starts from an AI prompt and lets you switch between prompting and editing visually, for web, iOS and Android apps, with its own database and workflows.

Why pick it

• Deep control over data, workflows and permissions, which suits portals with complex rules.
• Web and native mobile apps from the same plan.
• A custom domain from Starter ($29 a month billed yearly), and two-factor authentication listed from Growth ($119).

Watch out for

• It takes longer to learn than prompt-only builders.
• Usage is measured in workload units, which grow with your app's traffic.