100% free software
The public core has no subscription or per-user license fee. Budget separately for government fees, any professional help, and optional self-hosting.
FILLVISA OS VS ATLYS
An open-source Atlys alternative. 100% free.
Beautiful forms. Your own hosting. Open code.
Prepare supported U.S. immigration forms with a focused, browser-based experience. Fillvisa OS gives you free software, public source code, and the freedom to host your own copy. Check your form coverage before replacing a visa service.
100% free software Self-hostable AGPL-3.0
IS FILLVISA OS AN ATLYS ALTERNATIVE?
For supported U.S. forms, yes.
Start with the task you need to complete.
Fillvisa OS is 100% free, self-hostable immigration form software licensed under AGPL-3.0. It is an option for people who want to prepare supported forms themselves.
Atlys offers destination-based visa application services. Fillvisa OS does not replace its full travel visa catalog or service operations. Compare the exact form you need with the help you want. Fillvisa OS documentation · Atlys overview
A FREE STARTING POINT
Prepare your forms.
Keep control of your tools.
If you want to work through supported forms yourself, Fillvisa OS gives you an approachable interface and an open-source foundation without a preparation software fee.
A focused form experience
Work through readable questions and clear sections, then review the result. Try a sample before deciding whether the experience suits your application.
A copy you can inspect
Explore the source or deploy it yourself under AGPL-3.0. You can try the public demo without first setting up a server.
Choose the help you need, too. A form interface is only one part of preparation. Decide how you will confirm requirements, organize evidence, and review your work. Our design perspective is not a measured usability comparison.
SOFTWARE COST AND SERVICE COST
Fillvisa OS vs. Atlys pricing
Start by separating the tool from the service. Fillvisa OS has a $0 software license fee. For Atlys, check the quote for your destination, nationality, and chosen product.
| Cost | Fillvisa OS | Atlys |
|---|---|---|
| Software license | $0. No per-user subscription. | Compare the application service quote. |
| Service charges | No bundled visa processing service. | Check the Atlys service fee for your product. |
| Government fees | Separate from the software. | Check the government fee in the quote. |
| Other costs | Hosting, maintenance, and any professional assistance. | Check applicable taxes and selected services. |
Atlys describes a breakdown of government fees, service fees, and applicable taxes in its pricing and refund FAQ. There is no universal Atlys price used in this comparison.
Free software does not mean a free visa. Compare the full cost of completing your application, including any help you would arrange separately. A lower software cost alone does not establish an equivalent service.
A FOCUSED U.S. FORM WORKFLOW
Prepare, review, then complete the official steps.
Use Fillvisa OS where its supported workflows match your application. Keep submission requirements and any service needs in view from the beginning.
Check your form
Confirm the form, edition, and output in your chosen release. A destination name alone does not establish support.
Work through the questions
Use supported USCIS PDF workflows or the DS-160 workflow. The repository describes a bookmarklet that helps autofill the official CEAC website.
Review the result
Check every answer and follow the relevant official process. Form preparation does not book an appointment, submit every application, or guarantee an outcome.
COMPARE WHAT YOU NEED
Free form tools or a visa application service?
The best fit depends on coverage and responsibility. Use this comparison to decide which parts you want to handle yourself.
| Need | Fillvisa OS | Atlys |
|---|---|---|
| Primary purpose | Supported U.S. immigration form preparation. | Destination-based visa application assistance. |
| Coverage | Verify the exact form and release. | Verify your nationality, destination, and product. |
| Deployment | Self-hostable static frontend. | Use the Atlys service. |
| Source access | Public AGPL-3.0 source code. | No equivalent open-source edition identified in reviewed sources. |
| Submission and tracking | Plan official submission and tracking separately. | Application services and visa tracking are advertised; verify product scope. |
| Appointments and logistics | No bundled appointment booking or passport handling service. | Confirm any appointment or passport service in your order. |
| Refund protection | No visa-fee reimbursement product included. | Published refund terms depend on product, eligibility, and stage. |
| Moving your work | No direct Atlys import promised. | Retain your records and check existing commitments. |
Sources: Fillvisa OS, Atlys overview, service terms, and refund policy.
FILLVISA OS MAY FIT WHEN
You want to prepare supported forms yourself.
- Your exact form is available.
- You value free software and public source.
- You want optional self-hosting.
- You can organize evidence and submission separately.
ATLYS MAY FIT WHEN
You need a destination-specific service.
Check the assistance offered for your route and circumstances. A travel visa service can address needs beyond a form editor.
Compare the actual order inclusions, fees, and support before deciding.
Refund protection is conditional. Atlys publishes route- and stage-dependent refund information. Review the applicable policy and order terms, including whether a cancellation refund is issued as credits. Fillvisa OS includes no equivalent protection.
SELF-HOSTABLE. AGPL-3.0 LICENSED.
Your copy. Your deployment. Public source.
Fillvisa OS is a static frontend. The open-source core does not require a backend. Start with the repository instructions and verify your deployment before using it for real work.
01 / GET THE CODE
Start with the project.
Choose a repository release, review its included forms and documentation, and keep a record of the version you deploy.
View the repository →02 / HOST YOUR COPY
Serve the static files.
Use a static web server and test the form workflow, asset loading, downloads, and saved progress. Your deployment remains your responsibility.
Read setup documentation →03 / UNDERSTAND THE LICENSE
Built on AGPL-3.0.
Review the license before adapting, distributing, or operating a modified version for others. The repository’s license text is the authoritative reference.
Read the license →Control comes with responsibility. Plan updates, access controls, device security, and backups. Self-hosting a static frontend does not create a shared client database or cloud sync. Source availability alone is not a security certification.
BEFORE YOU CHANGE TOOLS
Keep your application organized from the start.
Try Fillvisa OS on a sample before moving work in progress. Confirm both your form coverage and the service tasks you will take on yourself.
List the forms and help you need
Identify the documents and outputs you plan to prepare. Separate software needs from filing guidance, customer support, and professional help you may want.
Check coverage in your release
Use the directory and repository to verify each supported form. Test the actual output with fictional data, including repeated fields or extra sections.
Preserve your existing work
If you have started with Atlys, confirm how to retain your answers and documents. There is no promised one-click import into Fillvisa OS.
Plan storage and review
Local browser progress does not automatically follow you to another device. Check export and backup options, keep your documents organized, and decide who will review the completed work.
Check any existing service commitment
Before cancelling an Atlys order, check its stage, applicable refund terms, and any help you would lose. Verify your alternative process end to end and follow the relevant official filing instructions.
DIRECT ANSWERS
Fillvisa OS vs. Atlys: frequently asked questions
Is Fillvisa OS a free Atlys alternative?
Yes, for supported U.S. immigration form preparation. Fillvisa OS is free and self-hostable under AGPL-3.0. It is not a replacement for the entire Atlys travel visa service catalog.
Is Fillvisa OS really 100% free?
Yes. The open-source software has no subscription or per-user license fee. Hosting, maintenance, government fees, and professional assistance are separate.
How much does Atlys cost?
Check the current quote for your destination and product. Atlys describes separate government fees, service fees, and applicable taxes; this page does not assume one universal price.
Does Fillvisa OS support every Atlys destination?
No such coverage is promised. Fillvisa OS focuses on supported U.S. immigration forms. Verify the exact form and workflow in your chosen release.
Can Fillvisa OS help with DS-160?
The repository lists DS-160 support and a bookmarklet to help autofill the official CEAC website. Review the supported workflow and complete the required official steps separately.
Does Fillvisa OS book visa appointments?
No bundled appointment booking or passport handling service is promised. Arrange those steps separately when your application requires them.
Does either option guarantee visa approval?
Fillvisa OS does not guarantee approval. Atlys terms state that visa decisions rest with the embassy; a conditional refund policy is not an approval guarantee.
Does Fillvisa OS include AtlysProtect-style refunds?
No. Fillvisa OS is free software and does not include government-fee reimbursement. For Atlys, check the applicable destination, product, application stage, and refund terms.
Can I import an Atlys application?
No direct import is promised. Preserve your answers, documents, and order records, then test supported transfer options before moving work.
Can I self-host Fillvisa OS?
Yes. Follow the repository instructions to serve the static frontend. Plan updates, access controls, and backups for your deployment.
Will progress sync across devices?
The open-source workflow uses local browser progress rather than automatic cross-device sync. Check the backup and export options available in your release.
Is this a Fillvisa Plus comparison?
No. This page compares Fillvisa OS, the free, self-hostable AGPL-3.0 edition. Paid hosted products are separate.
Sources & comparison methodology
Published by Fillvisa. First-party sources reviewed October 29, 2026. We compare software scope and service responsibilities, not application eligibility.
- Fillvisa OS repository
- AGPL-3.0 license
- Atlys product overview
- Atlys service terms
- Atlys pricing and refund FAQ
Atlys availability and quotes depend on the selected route and product. Confirm current inclusions before purchasing. We have not performed a controlled usability study, audited either product’s security, or tested a direct migration.
Atlys is a trademark of its respective owner. Fillvisa is not affiliated with or endorsed by Atlys.
FREE TO USE. OPEN TO EXPLORE.
Make the workflow your own.
Get Fillvisa OS. Inspect the code. Host your copy.
100% free software, licensed under AGPL-3.0.