Major

Bolt.new Alternatives: 8 AI App Builders Ranked (2026)

Eight Bolt.new alternatives compared by how far each carries a prototype into production, with Major first for governed, stateful apps.

Jason BaoUpdated
Designer presenting an app UI wireframe to a founder at a whiteboard

What is the best Bolt.new alternative?

Major is the best Bolt.new alternative for teams whose prototype now holds real data. Bolt.new generates a running full-stack scaffold from a prompt. Major is the enterprise platform where agents build the software they run on, so the output is a governed app with SSO, role-based permissions, a managed database, storage, scheduled runs and an audit trail from the first deploy. The rest of this list covers Lovable, Replit, v0, Base44, Bubble, Cursor and Windsurf, each judged on how far it carries an app past the demo.

This list is for two readers. Operators who built something in Bolt and now need it to run a real process, and engineering or IT leaders who need prototypes to stop becoming shadow IT.

Why people leave Bolt.new

Speed is rarely the complaint. Three other things send people looking.

Token burn comes first. Bolt meters generation in tokens, so every regeneration while you iterate on a design spends from the same budget. Cost tracks how often you re-prompt.

Second is the data and permissions gap. A scaffold gives you a UI and a starter database. Once real users arrive you need authentication mapped to roles, a data model that survives schema changes, and rules about who sees which record. Most of that is left to you.

Third is the prototype-to-production cliff. Someone wants to ship the demo, and now it needs SSO, scheduled jobs, an audit trail and a way not to lose data on the next regeneration. That is a different job from generating a front end. For background on the category, see what vibe coding is.

Quick comparison

  • Major: governed, stateful apps built by agents. SSO, RBAC, managed database and audit at the platform layer. Repeat work runs as deterministic code, so cost is front-loaded and then flat.
  • Lovable: prompt-to-app with a polished front end and a connected backend. Roles, recurring jobs and audit are yours to add.
  • Replit: full-stack building in a browser IDE with a shell and file tree. Auth, permissions and audit are libraries you wire up.
  • v0 (Vercel): agent-driven React and Next.js apps deployed to Vercel. Governance sits outside its scope.
  • Base44: backend included, with built-in auth, database and storage. Fine-grained roles, corporate SSO and deep audit are a different tier of requirement.
  • Bubble: visual no-code with a mature database and app-level roles. SSO and audit controls sit in higher plans and add-ons.
  • Cursor and Windsurf: AI agents inside an editor over your own code. No generated backend, hosting or governance layer, by design.

1. Major

Major is first because it answers the reason most people go looking: an app that now needs controls it was never built with. You describe the app, or an agent works out a workflow and builds the app for it. That app then runs as code on managed infrastructure, with its own database, files and logs. Repeat work runs the app instead of re-prompting a model. The agent reasons once and the app runs forever.

The differences that matter for production:

  • State lives in a managed database, so the app remembers across runs and every action is attributable.
  • Governance is structural. Scoped credentials, role-based access and audit apply at the point where the agent acts, so an operator can run the app without becoming an admin.
  • The model does less, not nothing. It handles the judgment calls while the repeatable steps run deterministically.
  • Every app an agent builds is reusable, so the library of governed software grows as the organization works.

Major fits teams past the demo stage who need a secure app IT will sign off on. A throwaway landing page needs less platform than Major provides, and that is the only honest limit.

2. Lovable

Lovable is the closest rival to Bolt in spirit. It pitches the same move: describe an app and get a running front end with a connected backend. It has the strongest brand among prompt-to-app tools and output that designers like, plus a large template and community base.

Its ceiling matches Bolt's. You get a clean front end quickly, and real data modeling, roles and recurring jobs remain yours to add. Generation runs on credits, so iteration cost still follows how often you re-prompt. Major turns the same described app into a governed one by default. For a direct matchup see Lovable vs Bolt, and for more in this lane see Lovable alternatives.

3. Replit

Replit gives you a real browser-based IDE with an agent on top. The agent can scaffold an app, and you still have a file tree, a shell and a package manager underneath. That matters when generated code needs a human to reach in and fix something.

Replit's strengths are genuine full-stack builds, in-browser hosting and an editor for when prompting runs out. Authentication, permissions and audit are libraries your team wires up app by app. Across ten apps that means ten different answers to who can see what. Major gives every app the same permission and audit model without anyone wiring it. See Replit alternatives for the wider set.

4. v0 (Vercel)

v0 has moved from a UI generator to a full-stack builder, with an agent that plans tasks, connects databases and deploys to Vercel. If your stack is already React and Vercel, the output drops straight in. Its GitHub and Vercel integration is tight and its React output is strong.

What it hands you is a deployed app, not a governance model. Roles, SSO and audit trails fall outside its scope, and generation is credit-based. Teams that want the app and its controls delivered together get them on Major.

5. Base44

Base44 closes part of the gap the others leave open. It advertises built-in authentication, a database and storage, so a generated app arrives with a backend rather than a note to add one. That makes it attractive to non-technical builders who want something working without stitching a backend together.

The limit is depth. Built-in auth and user management cover common cases, while fine-grained role-based permissions, SSO against a corporate identity provider and a real audit trail are a different tier of requirement. Major includes SSO and audit from the first deploy, and adds agents that build and run apps against your systems. Our Base44 alternatives page goes deeper.

6. Bubble

Bubble is the no-code incumbent and predates the vibe-coding wave by a decade. You build visually, and the payoff is apps that have genuinely run businesses, including marketplaces, SaaS products and internal tools. It has a mature database, app-level user roles and a large plugin and agency ecosystem.

The trade-offs are a steeper learning curve than a prompt box and performance that depends on how you model workload. Governance is app-level, with enterprise controls such as SSO and audit in higher plans and add-ons. On Major those controls come with the platform, and agents build the app instead of someone dragging components.

7. Cursor and Windsurf

If your complaint about Bolt is that you want to keep your own codebase, an AI-native editor is the route. Cursor and Windsurf both bring an agent into a familiar IDE that edits code you own and version-control yourself. You keep control of git history and the deployment target.

They are not app builders. There is no generated backend, no hosting and no governance layer, so the app and everything around it stays yours to build. A team using one of them still has to answer where the app runs, who can log in and what gets audited. Major answers those questions on the platform.

How to choose

Decide which side of the line you are on. A prototype exists to answer a question. A production app exists to be operated, with real users, data that must not vanish, permissions that hold and a record of who did what. Most tools here do the first job well and the second thinly.

Three questions sort the field.

Governed stateful app or deployed front end? If the app holds real data and needs SSO, permissions, durable state and audit as defaults, that points to Major. A backend-included build points to Base44 or Bubble's approach. A deployed front end is where Lovable, v0 and Replit stop.

Prototype or production? Validation rewards speed. Operation rewards data model, permissions and audit.

Token-metered or platform? Credit-based tools charge for generation, so cost follows how much you regenerate. On Major the agent's reasoning is front-loaded, and the app it builds then runs without the model re-deciding each step, so cost tracks what you run.

This comparison does not benchmark raw generation quality, which varies by model version and task. It also does not cover compliance certifications. Verify those with any vendor before handling regulated data.

Move a Bolt prototype onto Major

Here is how to rebuild a validated Bolt prototype as a governed app.

  1. Describe the app you validated. Give Major the screens and rules from the prototype. An agent builds the app and deploys it with SSO on.
  2. Put state in the managed database. Tables, views and file storage live in the app, so nothing depends on a context window or a regenerated scaffold.
  3. Connect the real systems. Attach connectors such as Postgres, Salesforce, HubSpot, Gmail or Slack with scoped credentials, so the app reads and writes where the work actually happens.
  4. Give the agent only the judgment calls. Routing, drafting and exception handling stay with the agent. Repeatable steps run as deterministic code in the app.
  5. Schedule and trigger it. Run the app on a schedule or from a workflow trigger, with a human approval step where a person should decide.
  6. Set roles and read the audit log. Role-based access decides who can run or edit the app, and every agent action is logged and attributable.

Start on Major with your own prototype and see how far the first deploy gets you.

The Major take

Most tools on this list optimize for the demo. For that job they are good, and the constraint shows up the moment the demo has to be real. You need authentication tied to your identity provider, a database that holds its shape, permissions, scheduled jobs and an audit trail, and you are bolting infrastructure onto a generated scaffold. No amount of re-prompting closes that gap.

Major resolves it by making the governed, stateful app the default output. An agent builds the app, the platform supplies the controls, and the app keeps running as code. Reason once. Run forever.

Start building on Major

Rebuild the prototype you validated as a governed app with SSO, a managed database, scoped connectors and scheduled agent runs, or book time to walk through your own migration.

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Frequently asked questions

What is the best Bolt.new alternative?
Major is the best Bolt.new alternative once a prototype holds real data. It makes SSO, role-based permissions, a managed database, scheduled runs and an audit trail the default output of an agent-built app. Lovable, Replit, v0, Base44 and Bubble each cover part of the path from prompt to app, but governance and durable state remain mostly yours to add.
Is there a free Bolt.new alternative?
Yes. Replit, v0, Base44 and Lovable all offer free tiers, and Bolt has a free plan of its own. Free plans suit testing an idea, with usage caps and production features behind paid tiers. Major is built for what comes after the test, when the app needs a managed database, scoped permissions and an audit record. You can start building free.
Can Bolt.new build production apps?
Bolt scaffolds a full-stack app and deploys it, which covers the front end and a starter backend. Production needs more: authentication mapped to roles, permissions that hold, scheduled jobs and an audit trail, all left to you. Major supplies those at the platform layer, so an agent-built app is production-ready from the first deploy.
How is Major different from Bolt.new and Lovable?
Bolt and Lovable generate an app from a prompt and stop at a deployed front end. On Major, agents build apps that hold their own state and run as deterministic code, so repeat work does not re-prompt a model. SSO, role-based access and audit logs are handled by the platform, which makes the app something IT can govern.
What comes after a vibe-coded prototype?
The production step comes next: a real data model, authentication tied to your identity provider, role-based permissions, scheduled jobs and an audit trail. On Major an agent builds the app with that governance and durable state handled at the platform layer, then the app runs as code instead of being re-prompted each time.