Retool is the best platform for internal enterprise tools when you have developers, because it is made for wiring internal screens to databases and APIs the company already runs. Microsoft Power Apps is second for Microsoft-first companies, and a custom build by Black Badger ranks third for the internal tool that has grown into a system the business depends on.
The ranking, entry by entry
1 Retool
Best for developer teams with many internal screens to ship
Internal tools are the screens no vendor sells, such as the refund console, the pricing override and the queue a support lead works from. Retool ranks first because it exists for these. Developers connect it to existing databases and APIs and ship quickly. Pricing separates builders from internal users, so the many employees who only use a tool are billed at the lower rate.
Watch for. Single sign-on, SCIM, Git source control and granular roles are listed only for Enterprise, which is custom priced. An enterprise should plan on that tier and get the quote.
- How it charges
- Per builder and per internal user, billed yearly or monthly
- Main limit
- SSO, SCIM, Git source control and granular roles are Enterprise only.
2 Microsoft Power Apps
Best for internal forms and workflow apps on Microsoft data
Power Apps ranks second for internal tools. In a Microsoft 365 and Azure company, staff outside the development team can build forms and workflow apps on Microsoft data, which takes small requests off the developer queue. One Premium license covers unlimited apps for a user, so a company that builds many tools pays once per person and not once per tool.
Watch for. Tools that use premium or custom connectors require every user to hold a Power Apps license or run on the pay-as-you-go meter. Check which of your data sources count as premium.
- How it charges
- Per user, billed yearly, or pay as you go
- Main limit
- Dataverse capacity is pooled, and extra capacity is charged per GB.
3 Custom build by Black Badger
Best for the internal tool that has become a system of record
A custom build is third on this list, and that is the right place for it. Most internal tools should be quick and cheap, and a platform does that better. Some outgrow that. When hundreds of people work in a tool all day and it holds records nothing else holds, it deserves to be built as a system. Black Badger publishes this guide and builds those, scoped in writing and owned by you, with no fee per user.
Watch for. Do not commission a build for a tool that a handful of people open now and then. Keep those on a platform and reserve custom work for the tools the business cannot run without.
- How it charges
- One-time build scoped in writing, then running costs such as hosting
- Main limit
- Needs a scoping call first, and suits companies of 50 or more employees
What a custom build involves, and how to ask about one
4 ServiceNow App Engine
Best for workflow tools for companies already on ServiceNow
ServiceNow App Engine is fourth. Where the company already runs on the Now Platform, internal workflow tools built there share its data and security model, which means one less set of access rules to maintain. It ranks fourth because that benefit exists only for existing customers. The Prime package adds unlimited custom tables and scoped apps along with process mining and platform analytics.
Watch for. With no published price, the cost of App Engine is whatever your account team quotes. Ask for it as a separate line so you can compare it with other routes.
- How it charges
- Quoted by sales, in Foundation and Prime packages
- Main limit
- Quote only, custom tables and scoped apps are capped below Prime
5 OutSystems
Best for internal tools that have become full applications
OutSystems ranks fifth for internal tools. It can build them, but its pricing by application objects, users and add-ons, starting at 100 internal users, is shaped for full business applications under central governance. For a handful of admin screens that is more platform than the job calls for. For a large portfolio of substantial internal apps it moves up.
Watch for. Because screens, tables and API methods all count as objects, many small tools can add up. Ask how the estimate changes as the number of tools grows.
- How it charges
- Quoted by app size, end users and add-ons
- Main limit
- Price rises with app size, user count and add-ons, and is quoted.
6 Airtable
Best for business teams building their own trackers and light apps
Airtable is sixth. In a large company it is often what business teams reach for when IT is busy, and it suits flexible databases and light internal apps built by the staff who use them. Only users with edit permission are charged. It ranks sixth for enterprise use because the plan with unlimited org units, workspaces and bases is Enterprise Scale, which is sold through sales.
Watch for. The Business plan lists 125,000 records per base and 100,000 automation runs per workspace a month. Tools that outgrow those need the Enterprise Scale plan.
- How it charges
- Per seat with edit rights, billed yearly, top plan quoted
- Main limit
- Team caps a base at 50,000 records and 25,000 automation runs a month
7 Creatio CRM
Best for internal process tools for sales and service operations
Creatio ranks seventh here. Its low-code platform can hold internal process tools, and it fits best when those tools serve sales, marketing or service teams using its CRM apps. The Growth platform plan lists two environments and 50,000 executed process elements a month, and the Enterprise plan lifts process runs to unlimited. For general internal tooling the platforms above are a closer fit.
Watch for. The standard term for new customers is three years with a minimum yearly purchase. That is a large commitment if internal tools are the only use.
- How it charges
- Per user for the platform, plus a per-user fee for each CRM app
- Main limit
- New customers have a minimum yearly purchase on a standard 3-year term.
How this list was ranked
This list is ranked for the internal tools of a company with several hundred to several thousand employees, meaning admin consoles, approval screens, operations queues and back-office apps used only by staff. We weighed how fast a tool can be built on data the company already holds and how each option prices people who use a tool without building it. We also weighed where enterprise controls sit in the plan table.
Custom is third here on purpose. Black Badger publishes this guide and builds custom software, and for most internal tools a platform is the better answer.
Questions buyers ask
What is an internal tool in a large company?
An internal tool is software only your own staff use to run the business. Admin consoles, approval queues, data correction screens and back-office apps are typical. Vendors rarely sell them as products, because the version each company needs is different.
Should internal tools be built by developers or by business staff?
Both developers and business staff should build internal tools, each for different tools. Anything that writes to core systems or handles sensitive data belongs with developers on a governed platform. Simple trackers and forms can be built by the teams that use them, as long as IT knows they exist.
When does an internal tool need to be rebuilt as a custom system?
An internal tool needs to become a system when the business cannot operate without it. Signs are hundreds of daily users, records that exist nowhere else, a need for audit history and a growing list of changes the platform makes awkward. That is the point to scope a build.
How are internal tool platforms priced for large companies?
Internal tool platforms are mostly priced per user, sometimes with a lower rate for people who only use tools and never build them. The enterprise controls a large company needs are usually on a quoted plan, so the published prices are a guide and the quote is the number.