The Replit alternative for production apps. Secure, built right, and yours from day one.
Replit gets an app running fast. Once customers pay for it, it has to stop breaking and stay secure. Echelar's AI agents plan, build, review and test every change in your own GitHub repository, with experts to plan the architecture if you want them. Nothing ships until you approve it.
45 minutes, live, on one real change. We connect one repository, and you can remove access after.
Compare side by side- Sam, founder, asks in Slack
Let customers download their invoices as PDFs.
- Orchestrator & Product plans it
A download route, a PDF template and a button on the billing page. Done when a customer can download their own invoices, and only theirs.
- Builder opens pull request #23
5 files changed, 3 tests added, 18 tests pass.
- PR Reviewer blocks it
The download route loads any invoice by its ID and never checks that it belongs to the signed-in customer.
SECURITY.md · “Every route checks that the signed-in user owns the record.” - Fix Session, re-review clean
Ownership check added, plus a test that one customer can't download another's invoice. Checks passed at 7b2c41.
- Sam merges #23
26 min from ask to merge$1.42 AI spend1 finding fixed before merge
No more fixes that break something else.
Experienced Replit users ask the Agent for a plan first, keep a changelog and revert early. Echelar works that way by default, on every change.
- Planned before it's built
Every request is planned against how your app already works before any code is written, so a new feature is built around what's there.
- Done means the checks passed
A change is finished when your checks pass at its exact commit, not when an agent says it's fixed. Where tests are missing, the reviewer says so.
- One change, one pull request
Each request arrives as a single pull request you can read, test and undo on its own.
- A second reader on every change
A separate reviewer reads each change against your app's rules before you do, and sends back what falls short.
- Your app's rules, every time
Echelar keeps your architecture, decisions and conventions with their sources, and marks them stale when the code changes, so every change starts from the same rules.
- A history you can read
Every change records who asked, the plan, the files, the checks and what it cost. The changelog careful Replit users keep by hand is built in.
Security that doesn't depend on the agent behaving.
Replit can scan your app for vulnerabilities before you publish, and that's worth keeping. Echelar adds what a scanner can't: limits on what agents can touch, your own rules checked on every change, and a person approving what ships.
- Agents never touch your live app
They work in an isolated workspace that's deleted when the task ends. Nothing reaches production until a person merges and deploys it.
- The narrowest access we can give
An agent can write to one repository and one pull request's branch, for an hour at most. The reviewer can only read.
- Your security rules on every change
Write a rule once, like “every route checks that the signed-in user owns the record”, and the reviewer blocks any change that breaks it.
- People hold the keys
Agents propose, build and review. Only people merge, deploy and enable.
- Your keys, encrypted
Your AI model keys are stored encrypted for your organization, and you pay the providers directly.
- Everything on record
Each task's activity, tool use and changed files stay inspectable, so a security question gets an answer with evidence.
Own everything from day one. Nothing to move later.
The longer an app lives on Replit's own services, the more there is to move if you ever leave. Echelar doesn't host anything, so there's nothing to move away from.
| What you own | Moving off Replit later | Built with Echelar |
|---|---|---|
| Sign-in | With Replit Auth, customers sign in with Replit accounts, so leaving means moving them to a new sign-in provider. | The sign-in provider you choose, set up in your own code. |
| Database | Your data is exported from Replit and imported somewhere new. | Your database, on an account you own. |
| Uploaded files | Files in Replit's storage are copied out. | Your storage, on an account you own. |
| Hosting and domains | Deployments and domains are set up again on the new host. | Wherever you choose, including Replit. |
| Code | Already yours once you push it to GitHub from the Git pane. | In your GitHub repository from the first change. |
Experts who plan for where your business is going.
Echelar's experts come from top startups and tech companies. They plan what to build and how with you, and Echelar Agents build it.
- They start from your business
Your stage, your customers and what's planned next come before any architecture choice.
- They design for the next stage
An architecture that fits where the business is today and can grow with it, adjusted as your plans change.
- Priced on outcomes and usage
Not hours on a timesheet, and highly competitive with any traditional dev shop.
Echelar vs Replit, side by side.
Both use AI agents. They're built for different moments in an app's life.
| Topic | Replit | Echelar |
|---|---|---|
| Best for | Building and running an app in the browser, fast. | Keeping an app with paying customers secure and working as it grows. |
| Where you ask | Chat with the Agent in your Replit workspace. | Slack, Linear, GitHub or Echelar, in plain language. Anyone on the team can ask. |
| How a change lands | The Agent edits your workspace, and you push to GitHub from the Git pane. | As a pull request on your GitHub repository, planned against how the app works. |
| How it's checked | The Agent tests its own work in a browser, and Replit can scan for vulnerabilities before you publish. | Your tests run on every pull request, and a separate, read-only reviewer checks it against your rules. |
| Who decides what ships | You publish from the workspace the Agent works in. | You do, by merging the pull request. |
| Hosting | Built-in deployments. | Not included. Keep Replit's deployments, or run it anywhere. |
| Cost | A plan plus effort-based Agent charges that vary with each task. | Your own model keys at provider prices, with a budget per task. Early teams agree Echelar's pricing with the founder. |
Stay on Replit if
- You're still finding the idea and want to build, run and host in one tab.
- The app is a demo, a prototype or an internal tool.
- Nobody pays for it yet, so a bad release costs little.
Bring in Echelar when
- Customers pay you, and a bad release costs money.
- A customer or investor asks how you handle security.
- You're about to hire a developer or hand the app to an agency.
Replit facts checked on against Replit's documentation: Git pane, App Testing, security scan, Replit Auth, Agent billing.
Make your Replit app production-ready.
No rewrite and no migration to start, and you can keep building in Replit.
- 01Push it to GitHub
In your Replit project, open the Git pane, connect a GitHub repository and push your code.
- 02Connect Echelar
Install the Echelar GitHub App on that repository. Echelar maps how the app works and shows you what it knows and what it doesn't yet.
- 03Add the safety net
Push Replit's work to a branch and open a pull request, and Echelar reviews it before it reaches your main code. Or ask Echelar for the next change in Slack, Linear or Echelar.
Questions about Replit and Echelar.
Is Echelar a Replit alternative?
For apps with paying customers, yes. Echelar isn't a browser workspace or a host. It's a team of AI agents that plans, builds, reviews and tests every change on your GitHub repository, with experts to plan the architecture if you want them.
Can I keep using Replit with Echelar?
Yes. Pull merged changes into Replit from the Git pane, and push Replit's work as a pull request for Echelar to review. It's simplest to make each change in one place at a time.
Doesn't Replit already scan for security issues?
It can, before you publish, and that's worth keeping. Echelar covers a different layer: what agents are allowed to touch, your own rules checked on every change by a separate reviewer, and a person approving what ships.
What happens to my Replit Auth users and database?
Nothing, unless you decide to move them. Echelar works on the code as it is. If you want sign-in or data off Replit, our experts plan the move and quote it first.
Does Echelar host my app?
No. Where the app runs stays your choice, including Replit's own deployments.
What does it cost?
You bring your own model keys and pay providers directly, with a budget on every task. Echelar is in early release, and early teams agree its pricing with the founder. Work by our experts is priced on outcomes and usage.
Do I need to be a developer?
No. You ask in plain language and approve pull requests, each with a summary of what changed and what was checked.
Bring the Replit app you're afraid to change.
We'll connect its repository live and take one real change from ask to approval, so you see what Echelar reads, what it builds, what it catches, and where it waits for you.
45 minutes, live, on one real change. We connect one repository, and you can remove access after.