Table of Contents
- What should I look for in an internal tool builder?
- The top 5 internal tool builders
- A quick overview
- 1 Zite - Best for no-code app building
- Zite pricing
- 2 Glide - Best for spreadsheet-based tools
- Glide pricing
- 3 Retool - Best for developer customization
- Retool pricing
- 4 AppSheet - Best for Google Workspace integration
- AppSheet pricing
- 5 Budibase - Best for open-source internal tools
- Budibase pricing
Last Edited Time
Jul 14, 2026 05:39 AM
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As somebody who is most productive when processes are organized and efficient, I've always been drawn to internal tools. Over the past year, I've used internal tool builders to create a range of tools, like reimbursement apps and inventory managers, and other tools that our team uses.
What I like most about internal tools is that they're built around the way your team actually works. Instead of adapting your processes to fit an off-the-shelf product, you can customize the app to match your workflow. You can remove features you don't need, add the ones you do, and continue improving the tool as your requirements evolve.
What should I look for in an internal tool builder?
The best internal tool builder should help you build quickly today while giving you the flexibility to support more users, data, and workflows as your business grows. Here are the key features to look for:
- Ease of use: A shorter learning curve means your team can build and update apps faster without relying on developers
- Flexibility: Every business has unique workflows, so your internal tool builder should adapt to your processes—not the other way around
- Integrations: Connected tools keep your data in sync and eliminate repetitive manual work across your existing tech stack
- Automation: Automated workflows save time, reduce manual effort, and help your team stay productive
- Scalability: A scalable platform can support more users, data, and increasingly complex workflows as your business grows
- Security and permissions: Granular access controls help protect sensitive business data while giving each team member the right level of access
- AI capabilities: Built-in AI can speed up app creation, automate repetitive tasks, and help your team work more efficiently
The top 5 internal tool builders
- Zite for AI-powered no-code app building
- Glide for spreadsheet-powered tools
- Retool for highly customizable internal apps
- AppSheet for Google ecosystem integration
- Budibase for self-hosted tools
A quick overview
Alternative | Best for | Free Plan | Paid Plans |
Teams that want to build without code | Free with unlimited published apps | Starts at $15 per month with unlimited seats | |
Teams already using spreadsheets | Free for unlimited drafts only | Starts at $19 per month for 1 seat | |
Technical teams and developers | Free with unlimited published apps | Starts at $10 per month for 1 user | |
Google Workspace users | Free with unlimited prototype apps | Starts at $5 per month for 1 user | |
IT and operation teams who prefer self-hosting | Free with unlimited self-hosted apps | Cloud starts at $19 per month for 1 user |
1 Zite - Best for no-code app building
As someone who isn't familiar with coding, I naturally gravitate toward Zite. It lets me create tools that our different departments have actually used without writing any code. From content management systems to invoice generators, I've built a variety of internal tools that are production-ready—not just prototypes.
What I like about Zite is that it isn't limited to AI-generated apps. It also includes a Selective Edits feature, which lets you manually tweak specific parts of your app, making it easy to fine-tune the UI for your team's workflow. On top of that, you can connect it with tools like Slack and Gmail to automatically notify team members whenever records are created or updated.
Key features
- AI-powered app generation
- Selective Edits for manual customization
- Built-in database for managing app data
- Workflow automations with Slack, Gmail, Outlook calendar, and more
- Role-based access and permissions
Zite pricing
Free plan with unlimited published apps and seats. Pro plan is $15 per month. Try it here.
2 Glide - Best for spreadsheet-based tools
Glide is one of the easiest ways to turn a spreadsheet into a working internal tool. If your team already manages data in Google Sheets or Excel, the learning curve feels much lower since you're building on something you're already familiar with.
Another feature I found useful is that your app stays in sync with its connected spreadsheet. Changes made in Glide are reflected in your spreadsheet, and updates to the spreadsheet are reflected in your app, so you don't have to worry about manually keeping both up to date. Combined with built-in forms, dashboards, and workflows, it's a great fit for directories, inventory trackers, and other similar use cases.
Key features
- Builds apps from Google Sheets, Excel, and Airtable
- Two-way data sync with connected spreadsheets
- Drag-and-drop app builder
- Built-in forms and dashboards
- Workflow automations
Glide pricing
Free plan available. Paid plans start at $19 per month for 1 seat. Try it here.
3 Retool - Best for developer customization
Where Retool shines is its flexibility. If you have engineering resources or need highly customized internal tools, it gives you plenty of control over your app's UI, logic, and integrations. It also comes with a library of templates to help you get started, although you'll likely need to customize them to fit your own data and workflows.
While it does have an AI builder, I found that creating an app still takes quite a bit of time. Unlike other no-code platforms, you're often expected to connect your own data sources and configure queries, which makes the experience feel much more technical.
Key features
- Custom JavaScript and SQL support
- Granular user roles and permissions
- Reusable components and queries
- Connects to databases, APIs, and third-party services
- Ready-made templates for common internal tools
Retool pricing
Free plan available. Paid plans start at $10 per month for 1 builder. Try it here.
4 AppSheet - Best for Google Workspace integration
AppSheet is built to work seamlessly with Google Workspace, making it easy to create internal tools that fit into your existing Google ecosystem. It isn't limited to Google services, though. You can also connect data from a variety of other cloud platforms and databases.
The interface includes a lot of menus and settings, so it can take some time to get familiar with at first. Once you're comfortable with the layout, switching between pages and views only takes a click or two, making it easy to build and refine your app.
Key features
- Gemini-powered app creation
- Native Google Workspace integration
- Easy navigation between app pages and views
- Google Apps Script support for custom automations and integrations
- User authentication with Google, Microsoft, Dropbox, and Box
AppSheet pricing
Free plan available. Paid plans start at $5 per month for 1 user. Try it here.
5 Budibase - Best for open-source internal tools
To test Budibase, I built a simple leave request tracker from scratch. While the drag-and-drop builder meant I didn't have to write code, it still took some time to figure out how everything fit together. Once I became more familiar with the interface, though, creating forms, tables, and different views became much easier.
Budibase offers a lot of flexibility, which comes with a steeper learning curve than some of the other builders I tested. It also supports self-hosting, making it a good option for teams that want to keep their apps and data on their own infrastructure.
Key features
- Drag-and-drop app builder
- Open-source with self-hosting support
- Connects to SQL databases, REST APIs, and other data sources
- Built-in workflow automation
- Reusable components and screens
Budibase pricing
Free plan available. Paid plans start at $19 per month for 1 user. Try it here.
There isn't a single internal tool builder that's right for everyone. The best choice depends on your team's workflow, technical experience, and how much flexibility you need. If you want to build apps as quickly as possible, a no-code platform like Zite might be the best fit. If your data already lives in spreadsheets, Glide can help you turn them into apps in minutes. Meanwhile, tools like Retool, Budibase, and AppSheet offer more customization for teams with different requirements.
Whichever platform you choose, the biggest benefit is having tools that work the way your team does. That flexibility can help you move faster, stay organized, and adjust your apps as your processes change.
Written by
Mikhaela Presillas is the Marketing Manager at Fillout. She lives in Manila where you can often find her trying out new restaurants and cafes in the city or exploring new destinations.