10 Best Internal Tool Builders of 2026

Retool ranks first because it covers the widest range of internal tool work for engineering teams: apps, workflows and AI actions on top of your own databases and APIs. The free plan includes up to 5 users and 250 pooled AI credits a month on Retool Cloud, which is enough to put a first admin panel into production. Paid plans split cost between builders, the people who create or edit apps, and internal users who only use them, so a large operations team does not pay builder rates. Team adds staging and production environments, and Business adds external users, embedded apps, audit logs and rich permissions. Retool runs in its cloud or self-hosted in your VPC, and the company says Docker setup takes about 15 minutes. The trade-offs are where governance sits: Git source control, SSO, SCIM and granular roles are Enterprise features, and the pricing page showed euros from our location, so we could not confirm a USD price.

Appsmith is the strongest open source option for engineering teams building admin panels, back-office apps and CRUD front ends. Its pricing is the simplest on this list: the Business plan costs $15 per user per month, and Appsmith states that developers who build or edit apps are not charged extra. The free plan covers up to 5 users on cloud, 5 workspaces, Google SSO and Git version control for 3 repos, and the open source Community edition can be self-hosted at no cost. Business removes the repo and workspace limits and adds workflows, reusable packages, custom roles, audit logs and premium integrations. The limits show up at the top end. Business stops at 99 users, and SAML or OIDC SSO, SCIM, CI/CD and private app embedding need the Enterprise plan, published at $2,500 per month for 100 users. New accounts get a 15-day Business trial without a credit card.

ToolJet is a strong pick for engineering teams that want an open source builder with AI app generation and the option to self-host. It connects to more than 100 databases, APIs and SaaS tools, includes ToolJet Database on PostgreSQL, and adds workflow automation and an agent builder. The free plan covers 2 builders, up to 50 end users and 10 apps with 100 AI credits. The cheapest paid tier is $23 per builder per month billed annually with 2,000 AI credits per builder, and Pro at $79 adds custom styling, version control and email support. The jump comes at Team, $199 per builder per month billed annually, which is where SSO, custom user groups, white labelling, audit logs, Git sync and 100 end users appear. Enterprise removes per-user fees for end users and adds SCIM and air-gapped deployment. Self-hosting runs on Docker, Kubernetes, a VPC or on premise.

UI Bakery suits small developer teams that want a full internal tool builder without per-viewer fees. The free plan already includes unlimited apps and data source connections, a hosted PostgreSQL database, release history and unlimited public app users. Builder costs $20 per developer per month billed annually or $25 monthly and adds app and data source environments, app export, built-in roles and up to 50 workspace view seats. Team at $35 per developer per month billed annually adds role-based access control, audit logs and premium support, and includes $40 of AI usage credits per developer for the AI App Agent. UI Bakery defines a developer as anyone with permission to edit apps, automations or data sources, so ordinary users are not billed. The catch is scale: cloud paid plans stop at 50 workspace viewers, and custom SSO with SAML or OpenID needs the Enterprise plan. A self-hosted Free plan with unlimited seats is also listed.

Jet Admin stands out for flat pricing: every plan includes unlimited apps, unlimited users and unlimited workflows, and the plans differ mainly by features and AI credits. That makes it a cheap way to give a whole company an admin panel over PostgreSQL, Google Sheets, Airtable, Firebase or its own Jet Tables, plus business apps such as HubSpot, Stripe, Salesforce and Zendesk. Starter costs $20 per month billed yearly or $25 monthly and adds a custom domain, removal of Jet branding, 2-way GitHub sync, environments, version control and API access. Pro at $75 per month billed yearly adds granular permissions, SSO and audit logs. Enterprise brings an uptime SLA, on-premise deployment and self-hosted AI models. The trade-off is that Jet Admin's pricing is built around AI credits, and the free plan has only limited credits to build an app, so heavy AI-assisted building may push you up a tier.

Budibase is the most generous free option for teams that can host software themselves. The self-hosted Community plan costs $0 and includes unlimited users and unlimited apps, agents, automations and requests, plus standard SSO. You get a drag-and-drop interface designer, an automation builder with more than 20 triggers and actions, an agent builder that can use your own AI key, Budibase DB and connections to external databases and REST APIs. The limits on Community are practical rather than hard caps: 1 workspace and 1 day of automation log retention. If you want Budibase to host it, Budibase Cloud starts at $299 per month with 2 creators, 20 end users, 250K monthly actions and 50K monthly AI credits, and a 14-day free trial. That entry price is high for a small team compared with per-builder tools. Enterprise adds unlimited workspaces, extended audit logs and backups, and air-gapped deployment.

Superblocks targets companies that want employees to build internal apps with AI while IT keeps control. Builders use Clark, an AI coding agent, to create apps in natural language on top of systems such as Postgres, Snowflake, Salesforce and Databricks, and Clark works within each builder's existing permissions. The Teams plan costs $100 per month billed annually or $125 monthly, with 100 Governed Agent Units a month, staging and production environments, 50+ integrations, unlimited end users and up to 15 builders. It includes 1 hosted app, and additional apps cost $10 per app per month. The governance features most engineering leaders will want, SSO, SAML and OIDC, role-based access control, audit logs, source control and hybrid or cloud-prem VPC deployment, are all on Enterprise with custom pricing. Superblocks is SOC 2 Type II certified and HIPAA compliant, and customers own the generated code. There is a 14-day trial but no permanent free plan.

DronaHQ prices by usage rather than seats, which suits companies with many people using a few internal apps. Every plan includes unlimited users, and you pay for tasks: Starter costs $100 per month billed annually or $140 monthly, Business costs $500 per month billed annually or $700 monthly, and extra tasks cost $0.002 each. Starter already includes unlimited apps and connectors, more than 100 UI components, rules and validation, version history and reusable queries and APIs. Business adds app catalogs, themes, data environments, a custom domain with white labelling, custom controls and SAML or OpenID Connect SSO. DronaHQ also covers forms, dashboards and mobile apps, and offers self-hosting, where Git-based source control is available. The weak spots are entry cost for small teams and governance: audit logs and granular permissions require Enterprise. The free trial gives one month of the Business plan without a credit card.

Softr is the easiest tool on this list for non-developers, and it fits engineering teams mainly when operations or business staff will build their own portals and simple internal tools. The free plan includes unlimited apps, databases, workflows, agents and forms, up to 3 builders, 5 app users, 5K database records and 500 workflow actions a month. Basic costs $19 per month with 1 builder and adds a custom domain, conditional form logic and automated database backup. Pro at $99 per month is where custom code, API connectors, granular permissions and branding removal appear, with 2 builders, 10 team users, 50 client users and 500K records. The limits matter for admin panel work: there is no Git workflow, app user allowances are small, and connecting to your own APIs needs Pro. Softr says it is trusted by more than 1 million businesses.

Glide's GlideOS is an AI software development platform for internal business apps built from a spreadsheet, a prompt or a file. It suits operations teams more than engineers who want to wire apps to production databases. The free plan has limited credits, 2 team members and 10 projects. Basic costs $25 per month with 100 credits, 2 published apps and 1 enabled workflow, and Plus at $50 per month raises that to 5 published apps and public apps. Pro starts at $125 per month for 5 members with 500 credits, unlimited published apps and workflows, premium integrations, building through your own agent over MCP, org-level roles and human support. SSO, audit logs and a choice of LLM provider are Enterprise features. Because GlideOS meters AI work in credits, costs rise with how much you build. GlideOS is also a separate product from Glide Classic, and Glide says there is no tool to migrate existing Classic apps.