Introduction
The low-code revolution is thriving in 2025. Dozens of platforms are enabling businesses to build applications faster, cheaper, and smarter than ever before. Among these innovators was Builder.ai, a company that once stood out for its AI-driven app development solutions. It gained rapid traction with its bold promise: to let anyone build software without needing to code.
At its peak, Builder.ai attracted global attention, with high-profile backers like Microsoft and the Qatar Investment Authority. However, as TechCrunch reports, in a surprising turn of events, the company has recently entered insolvency proceedings following internal investigations, revised revenue disclosures, and growing concerns over its financial health.
While the news may feel like a tech-world tremor, it’s also a moment of clarity and opportunity. The growing demand for reliable, transparent, and scalable low-code platforms hasn’t slowed.
In fact, it has intensified, especially for enterprises that prioritize open-source flexibility, strong community support, and solid product-roadmap execution.
If you’re a former Builder.ai customer or just someone searching for the right platform to bring your digital ideas to life, there are some incredible alternatives to consider.
In this blog, we’ve handpicked the top 10 Builder.ai competitors in 2025 that combine ease of use, transparency, and long-term viability to help you build software that scales.
First things first. What is Builder.ai?
Before we get into the alternatives, let’s clear the air.
Builder.ai was a London-based low-code platform that promised to simplify software development using artificial intelligence.
The core idea? Let anyone, tech-savvy or not, build custom apps without writing a single line of code. It positioned itself as a software assembly line, where users could choose prebuilt templates, plug in features, and get a working app delivered faster than traditional dev shops could manage.
Backed by tech giants, Builder.ai quickly gained momentum across startups, enterprises, and entrepreneurs alike. From e-commerce apps to internal tools, the platform aimed to offer it all with minimal technical friction.
But while the vision was compelling, the execution didn’t quite keep pace.
So yes, Builder.ai did bring some great ideas to the table. But now, it’s time to look forward. Because if you’re looking for a platform that’s stable, transparent, and community-driven, the good news is: you have options! So, let’s start exploring those in our article.
A quick glance at the top 10 Builder.ai competitors/ alternatives
If you want to move on from Builder.ai or are just exploring the best robust AI app builders, the market is full of powerful Builder.ai alternatives.
Here’s a quick comparison table to get started:
| Platform | Special feature | Pricing | G2 ratings |
| ToolJet | Open-source, AI-powered low-code/no-code builder with self-hosting and cloud options | You can start for free, then move on to paid plans starting from $79/builder/month, pay only for builder. | 4.8/5 |
| Retool | Enterprise-ready with deep data integrations | Free plan available; from $10/standard user/month and $5/end user/month | 4.6/5 |
| Appsmith | Developer-first open-source platform | Free plan available for individual users. Paid plan starts at $15/month per user. | 4.7/5 |
| DronaHQ | Internal tool builder with strong mobile support | Free plans are available. Then you can start at $15/user/month. | 4.4/5 |
| OutSystems | Full-stack enterprise-grade platform | Custom enterprise pricing | 4.6/5 |
| Mendix | Model-driven app development at scale | Free plan available. You can start at €900/month with the standard plan. | 4.5/5 |
| Glide | Turns Google Sheets into polished apps | Free plan available. Paid plans start at $19 per month, billed yearly. | 4.7/5 |
| Zapier | Workflow automation without code | Free plan available; from https://zapier.com/pricing | 4.5/5 |
| UI Bakery | Visual front-end builder for internal tools | Starts at $5/month per user or $10/month per developer. | 4.7/5 |
| Zoho Creator | Business-focused low-code suite | Free plan available. Paid plan starts at $5.58/user/month, billed annually. | 4.3/5 |
Looking for the easiest way to build AI-powered apps in 2025? Check out our guide to the “Top 6 AI App Builders for 2025”, your shortcut to smart, efficient development.
Top Builder.ai alternatives in 2025
Let us explore the top builder.ai alternatives in 2025, their key features, pricing, pros, and cons to help you determine which is the best fit for your business.
1. ToolJet
Overview: ToolJet is an open-source, AI-powered, low-code platform that’s perfect for quickly building internal tools and dashboards. From prompts to apps in minutes.
Pros:
- Fully open-source with enterprise-ready features
- Easy integration with REST APIs, databases, and GraphQL
- Great for security-conscious organizations needing on-premise control
- Easy to migrate with minimal vendor lock-in
- Backed by an active community and a dedicated team
- Charges only for the builder, not for end users
Cons:
- Still maturing compared to older players
2. Retool
Overview: Built for developers, Retool makes it easy to connect databases and APIs to build custom admin panels, dashboards, and CRUD apps.
Pros:
- Extremely fast for internal tool development
- Excellent integration library (Postgres, MongoDB, GraphQL, etc.)
- Drag-and-drop UI + JavaScript flexibility
Cons:
- It can get pricey as your team grows
- Not ideal for public-facing apps
3. Appsmith
Overview: A robust, open-source low-code platform that lets devs quickly build custom apps, especially internal tools.
Pros:
- Developer-friendly with strong Git, JS, and Docker support
- Easy to self-host and scale
- Good community and plugin ecosystem
Cons:
- Learning curve for non-developers
- The cloud version is still catching up on premium features
Wondering which internal tools can actually boost your team’s productivity in 2025? Explore “The top 10 internal tools you should know”, your go-to guide for smarter operations.
4. DronaHQ
Overview: A low-code platform focused on enterprise-grade internal apps with strong mobile app capabilities.
Pros:
- Great support for mobile-first use cases
- Flexible connectors and scripting options
Cons:
- UI design is less intuitive than competitors/alternatives
- Some advanced features are locked behind higher tiers
5. OutSystems
Overview: A powerful full-stack enterprise app platform focused on large-scale digital transformation.
Pros:
- Excellent performance and scalability
- End-to-end dev lifecycle tools (versioning, CI/CD, etc.)
Cons:
- Expensive, especially for startups and SMBs
- Steep learning curve for new users
6. Mendix
Overview: A high-productivity platform for building and deploying complex apps across web and mobile.
Pros:
- Enterprise features with visual modeling
- Robust collaboration and versioning
Cons:
- Pricing is opaque and geared toward large enterprises
- It might be overkill for smaller projects
7. Glide
Overview: Perfect for turning Google Sheets or Excel data into sleek mobile and web apps with zero code.
Pros:
- Extremely easy to use
- Great for MVPs and lightweight apps
Cons:
- Limited customization
- Not suitable for complex business logic or scaling
8. Zapier
Overview: While not a traditional low-code builder, Zapier allows users to create automated workflows between over 6,000 apps, without code.
Pros:
- Massive app ecosystem
- Easy automation without coding
Cons:
- Not for building UI-heavy apps
- Can become expensive at scale
9. UI Bakery
Overview: A visual internal tool builder designed for front-end simplicity with solid backend integrations.
Pros:
- Fast UI creation with drag-and-drop components
- Integrates well with databases and APIs
Cons:
- Limited mobile responsiveness
- Still growing community and support base
10. Zoho Creator
Overview: Zoho Creator offers a full low-code app development suite for business users with excellent integration into the Zoho ecosystem.
Pros:
- Easy form and workflow creation
- Strong suite of built-in business tools
Cons:
- UI feels outdated
- Custom logic requires learning Zoho’s scripting language (Deluge)
Curious which low-code AI platforms are leading the way in 2025? Read our blog to discover the “Top 5 Tools You Need to Know for faster, smarter app development”.
How ToolJet became the saviour for Emeritus: Real impacts with real results
When global edtech leader Emeritus faced operational bottlenecks and rising development costs, ToolJet stepped in as a platform and a game-changing solution.
A billion-dollar edtech company serving 500,000+ learners globally faced challenges scaling its internal systems. With 1,000+ employees and over 50 developers, productivity was held back by inefficient admin tools and siloed data.
Impact created by ToolJet
- 50% faster delivery of internal tools
- 40% cut in development costs
- 600+ hours saved in engine
ToolJet enabled non-tech teams to build internal tools effortlessly using a clean, drag-and-drop interface. Integration with existing systems was seamless. With role-based access, ToolJet ensured secure data handling without draining developer bandwidth.
- Internal tools built 2x faster
- 30% reduction in errors
- Dramatically improved interfaces for enterprise enrollment
- Freed up developers to focus on core products
ToolJet didn’t just solve a problem; it unlocked scale for Emeritus.
What should you look for in a Builder.ai competitor before choosing one?
Switching platforms isn’t just about finding a new builder.ai; it’s about finding the right fit for your business. Here are the key factors to consider when evaluating Builder.ai alternatives:
1. Ease of use
Look for a platform that non-technical users can pick up quickly, but still offers enough depth for developers to go under the hood. A clean, intuitive UI is critical, especially if you’re building tools for cross-functional teams.
2. Open source or vendor lock-in
Open-source platforms like ToolJet or Appsmith offer transparency, flexibility, and long-term control. Proprietary systems may lock you into their ecosystem, making future migrations costly and complex.
3. Integration capabilities
Your new platform should seamlessly integrate with your existing stack; think databases (PostgreSQL, CouchDB), SaaS tools (WooCommerce, Zendesk), and APIs. The more plug-and-play it is, the faster you’ll see ROI.
4. Scalability and performance
Choose a builder.ai competitor or alternative that scales with your business. Whether you’re deploying internal tools for 10 users or 1,000, performance shouldn’t be a bottleneck.
5. Security & compliance
Ensure the platform supports role-based access, secure data handling, and industry compliance (e.g., SOC 2, GDPR). This is especially crucial for enterprises and regulated industries.
6. Deployment flexibility
Need to host on your own servers? Want cloud-based convenience? Choose a builder.ai competitor or alternative that gives you both options, or lets you switch when needed.
7. Support & community
A responsive support team and an active user community can make a world of difference. Look for vendors with strong documentation, forums, and direct customer success assistance.
8. Pricing transparency
Avoid surprise costs. Look for straightforward pricing tiers and free trials. Bonus points if the platform offers value-based pricing (e.g., by usage or builder seats).
9. Migration
Choose a platform that makes it easy to migrate your data, workflows, and integrations, without vendor lock-in. Look for clear documentation, API compatibility, and support to ensure a smooth transition.
Why build with ToolJet, the best builder.ai alternative or competitor?
ToolJet directly addresses the biggest frustrations Builder.ai users face, while giving you more control, speed, and transparency.
Here’s a side-by-side breakdown:
| Serial number | Builder.ai problems | ToolJet solutions |
| 1 | Years-long delays | Build and deploy apps in minutes, not months |
| 2 | Hidden costs | Transparent pricing with no surprises |
| 3 | Vendor lock-in | Open-source and self-hostable |
| 4 | Financial instability | Backed by a stable, growing team and roadmap |
| 5 | Poor customer support | Active community and responsive enterprise support |
| 6 | Buggy deliverables | Production-ready components out of the box |
| 7 | Limited customization | Full code access when deeper control is needed |
We would say, don’t just compare features, test the experience. Book a demo with ToolJet, and see the difference.
From breakdown to breakthrough: Build better, build today!
The fall of Builder.ai isn’t the end of low-code innovation; it’s a wake-up call. A reminder that scalability, transparency, and community support matter just as much as features.
If you’re searching for a platform that lets you move fast, stay flexible, whether it’s dashboards, admin panels, or forms, choose one where you pay for what you build, not for who uses it. Choose where you have the freedom to explore and scale.
Don’t settle for promises. Choose a platform that delivers.
Ready to rebuild? Start with ToolJet today!
FAQs
1. Can I use a free AI app builder without coding?
Yes! ToolJet, Glide, and Appsmith offer free plans where you can build AI-powered apps without writing code. ToolJet stands out for offering drag-and-drop UI, AI assistance, and backend logic, all without needing to code.
2. Can I use an AI app builder for free forever?
Most platforms, like ToolJet, provide a generous free tier for individuals or small teams. It includes core features like database integrations, AI workflows, and app deployment. For advanced features or larger teams, paid plans are available.
3. Which free AI app builder is best for internal tools?
If you’re building internal dashboards, admin panels, or tools for your ops/sales/support teams, ToolJet is a great choice. It’s tailored for building internal apps, supports AI automations, and offers both cloud and self-hosted deployments.
4. Can I build a mobile app using an AI app builder for free?
Yes, several AI app builders like Glide and DronaHQ allow you to create mobile apps for free using spreadsheets or databases as a backend. ToolJet also supports responsive design, which works well for internal mobile apps.
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